d3.v2.js

(function() {
  if (!Date.now) Date.now = function() {
    return +(new Date);
  };
  try {
    document.createElement("div").style.setProperty("opacity", 0, "");
  } catch (error) {
    var d3_style_prototype = CSSStyleDeclaration.prototype, d3_style_setProperty = d3_style_prototype.setProperty;
    d3_style_prototype.setProperty = function(name, value, priority) {
      d3_style_setProperty.call(this, name, value + "", priority);
    };
  }
  d3 = {
    version: "2.9.7"
  };
  function d3_class(ctor, properties) {
    try {
      for (var key in properties) {
        Object.defineProperty(ctor.prototype, key, {
          value: properties[key],
          enumerable: false
        });
      }
    } catch (e) {
      ctor.prototype = properties;
    }
  }
  var d3_array = d3_arraySlice;
  function d3_arrayCopy(pseudoarray) {
    var i = -1, n = pseudoarray.length, array = [];
    while (++i < n) array.push(pseudoarray[i]);
    return array;
  }
  function d3_arraySlice(pseudoarray) {
    return Array.prototype.slice.call(pseudoarray);
  }
  try {
    d3_array(document.documentElement.childNodes)[0].nodeType;
  } catch (e) {
    d3_array = d3_arrayCopy;
  }
  var d3_arraySubclass = [].__proto__ ? function(array, prototype) {
    array.__proto__ = prototype;
  } : function(array, prototype) {
    for (var property in prototype) array[property] = prototype[property];
  };
  d3.map = function(object) {
    var map = new d3_Map;
    for (var key in object) map.set(key, object[key]);
    return map;
  };
  function d3_Map() {}
  d3_class(d3_Map, {
    has: function(key) {
      return d3_map_prefix + key in this;
    },
    get: function(key) {
      return this[d3_map_prefix + key];
    },
    set: function(key, value) {
      return this[d3_map_prefix + key] = value;
    },
    remove: function(key) {
      key = d3_map_prefix + key;
      return key in this && delete this[key];
    },
    keys: function() {
      var keys = [];
      this.forEach(function(key) {
        keys.push(key);
      });
      return keys;
    },
    values: function() {
      var values = [];
      this.forEach(function(key, value) {
        values.push(value);
      });
      return values;
    },
    entries: function() {
      var entries = [];
      this.forEach(function(key, value) {
        entries.push({
          key: key,
          value: value
        });
      });
      return entries;
    },
    forEach: function(f) {
      for (var key in this) {
        if (key.charCodeAt(0) === d3_map_prefixCode) {
          f.call(this, key.substring(1), this[key]);
        }
      }
    }
  });
  var d3_map_prefix = "\0", d3_map_prefixCode = d3_map_prefix.charCodeAt(0);
  function d3_identity(d) {
    return d;
  }
  function d3_this() {
    return this;
  }
  function d3_true() {
    return true;
  }
  function d3_functor(v) {
    return typeof v === "function" ? v : function() {
      return v;
    };
  }
  d3.functor = d3_functor;
  d3.rebind = function(target, source) {
    var i = 1, n = arguments.length, method;
    while (++i < n) target[method = arguments[i]] = d3_rebind(target, source, source[method]);
    return target;
  };
  function d3_rebind(target, source, method) {
    return function() {
      var value = method.apply(source, arguments);
      return arguments.length ? target : value;
    };
  }
  d3.ascending = function(a, b) {
    return a < b ? -1 : a > b ? 1 : a >= b ? 0 : NaN;
  };
  d3.descending = function(a, b) {
    return b < a ? -1 : b > a ? 1 : b >= a ? 0 : NaN;
  };
  d3.mean = function(array, f) {
    var n = array.length, a, m = 0, i = -1, j = 0;
    if (arguments.length === 1) {
      while (++i < n) if (d3_number(a = array[i])) m += (a - m) / ++j;
    } else {
      while (++i < n) if (d3_number(a = f.call(array, array[i], i))) m += (a - m) / ++j;
    }
    return j ? m : undefined;
  };
  d3.median = function(array, f) {
    if (arguments.length > 1) array = array.map(f);
    array = array.filter(d3_number);
    return array.length ? d3.quantile(array.sort(d3.ascending), .5) : undefined;
  };
  d3.min = function(array, f) {
    var i = -1, n = array.length, a, b;
    if (arguments.length === 1) {
      while (++i < n && ((a = array[i]) == null || a != a)) a = undefined;
      while (++i < n) if ((b = array[i]) != null && a > b) a = b;
    } else {
      while (++i < n && ((a = f.call(array, array[i], i)) == null || a != a)) a = undefined;
      while (++i < n) if ((b = f.call(array, array[i], i)) != null && a > b) a = b;
    }
    return a;
  };
  d3.max = function(array, f) {
    var i = -1, n = array.length, a, b;
    if (arguments.length === 1) {
      while (++i < n && ((a = array[i]) == null || a != a)) a = undefined;
      while (++i < n) if ((b = array[i]) != null && b > a) a = b;
    } else {
      while (++i < n && ((a = f.call(array, array[i], i)) == null || a != a)) a = undefined;
      while (++i < n) if ((b = f.call(array, array[i], i)) != null && b > a) a = b;
    }
    return a;
  };
  d3.extent = function(array, f) {
    var i = -1, n = array.length, a, b, c;
    if (arguments.length === 1) {
      while (++i < n && ((a = c = array[i]) == null || a != a)) a = c = undefined;
      while (++i < n) if ((b = array[i]) != null) {
        if (a > b) a = b;
        if (c < b) c = b;
      }
    } else {
      while (++i < n && ((a = c = f.call(array, array[i], i)) == null || a != a)) a = undefined;
      while (++i < n) if ((b = f.call(array, array[i], i)) != null) {
        if (a > b) a = b;
        if (c < b) c = b;
      }
    }
    return [ a, c ];
  };
  d3.random = {
    normal: function(mean, deviation) {
      if (arguments.length < 2) deviation = 1;
      if (arguments.length < 1) mean = 0;
      return function() {
        var x, y, r;
        do {
          x = Math.random() * 2 - 1;
          y = Math.random() * 2 - 1;
          r = x * x + y * y;
        } while (!r || r > 1);
        return mean + deviation * x * Math.sqrt(-2 * Math.log(r) / r);
      };
    }
  };
  function d3_number(x) {
    return x != null && !isNaN(x);
  }
  d3.sum = function(array, f) {
    var s = 0, n = array.length, a, i = -1;
    if (arguments.length === 1) {
      while (++i < n) if (!isNaN(a = +array[i])) s += a;
    } else {
      while (++i < n) if (!isNaN(a = +f.call(array, array[i], i))) s += a;
    }
    return s;
  };
  d3.quantile = function(values, p) {
    var H = (values.length - 1) * p + 1, h = Math.floor(H), v = values[h - 1], e = H - h;
    return e ? v + e * (values[h] - v) : v;
  };
  d3.transpose = function(matrix) {
    return d3.zip.apply(d3, matrix);
  };
  d3.zip = function() {
    if (!(n = arguments.length)) return [];
    for (var i = -1, m = d3.min(arguments, d3_zipLength), zips = new Array(m); ++i < m; ) {
      for (var j = -1, n, zip = zips[i] = new Array(n); ++j < n; ) {
        zip[j] = arguments[j][i];
      }
    }
    return zips;
  };
  function d3_zipLength(d) {
    return d.length;
  }
  d3.bisector = function(f) {
    return {
      left: function(a, x, lo, hi) {
        if (arguments.length < 3) lo = 0;
        if (arguments.length < 4) hi = a.length;
        while (lo < hi) {
          var mid = lo + hi >>> 1;
          if (f.call(a, a[mid], mid) < x) lo = mid + 1; else hi = mid;
        }
        return lo;
      },
      right: function(a, x, lo, hi) {
        if (arguments.length < 3) lo = 0;
        if (arguments.length < 4) hi = a.length;
        while (lo < hi) {
          var mid = lo + hi >>> 1;
          if (x < f.call(a, a[mid], mid)) hi = mid; else lo = mid + 1;
        }
        return lo;
      }
    };
  };
  var d3_bisector = d3.bisector(function(d) {
    return d;
  });
  d3.bisectLeft = d3_bisector.left;
  d3.bisect = d3.bisectRight = d3_bisector.right;
  d3.first = function(array, f) {
    var i = 0, n = array.length, a = array[0], b;
    if (arguments.length === 1) f = d3.ascending;
    while (++i < n) {
      if (f.call(array, a, b = array[i]) > 0) {
        a = b;
      }
    }
    return a;
  };
  d3.last = function(array, f) {
    var i = 0, n = array.length, a = array[0], b;
    if (arguments.length === 1) f = d3.ascending;
    while (++i < n) {
      if (f.call(array, a, b = array[i]) <= 0) {
        a = b;
      }
    }
    return a;
  };
  d3.nest = function() {
    var nest = {}, keys = [], sortKeys = [], sortValues, rollup;
    function map(array, depth) {
      if (depth >= keys.length) return rollup ? rollup.call(nest, array) : sortValues ? array.sort(sortValues) : array;
      var i = -1, n = array.length, key = keys[depth++], keyValue, object, valuesByKey = new d3_Map, values, o = {};
      while (++i < n) {
        if (values = valuesByKey.get(keyValue = key(object = array[i]))) {
          values.push(object);
        } else {
          valuesByKey.set(keyValue, [ object ]);
        }
      }
      valuesByKey.forEach(function(keyValue) {
        o[keyValue] = map(valuesByKey.get(keyValue), depth);
      });
      return o;
    }
    function entries(map, depth) {
      if (depth >= keys.length) return map;
      var a = [], sortKey = sortKeys[depth++], key;
      for (key in map) {
        a.push({
          key: key,
          values: entries(map[key], depth)
        });
      }
      if (sortKey) a.sort(function(a, b) {
        return sortKey(a.key, b.key);
      });
      return a;
    }
    nest.map = function(array) {
      return map(array, 0);
    };
    nest.entries = function(array) {
      return entries(map(array, 0), 0);
    };
    nest.key = function(d) {
      keys.push(d);
      return nest;
    };
    nest.sortKeys = function(order) {
      sortKeys[keys.length - 1] = order;
      return nest;
    };
    nest.sortValues = function(order) {
      sortValues = order;
      return nest;
    };
    nest.rollup = function(f) {
      rollup = f;
      return nest;
    };
    return nest;
  };
  d3.keys = function(map) {
    var keys = [];
    for (var key in map) keys.push(key);
    return keys;
  };
  d3.values = function(map) {
    var values = [];
    for (var key in map) values.push(map[key]);
    return values;
  };
  d3.entries = function(map) {
    var entries = [];
    for (var key in map) entries.push({
      key: key,
      value: map[key]
    });
    return entries;
  };
  d3.permute = function(array, indexes) {
    var permutes = [], i = -1, n = indexes.length;
    while (++i < n) permutes[i] = array[indexes[i]];
    return permutes;
  };
  d3.merge = function(arrays) {
    return Array.prototype.concat.apply([], arrays);
  };
  d3.split = function(array, f) {
    var arrays = [], values = [], value, i = -1, n = array.length;
    if (arguments.length < 2) f = d3_splitter;
    while (++i < n) {
      if (f.call(values, value = array[i], i)) {
        values = [];
      } else {
        if (!values.length) arrays.push(values);
        values.push(value);
      }
    }
    return arrays;
  };
  function d3_splitter(d) {
    return d == null;
  }
  function d3_collapse(s) {
    return s.replace(/^\s+|\s+$/g, "").replace(/\s+/g, " ");
  }
  d3.range = function(start, stop, step) {
    if (arguments.length < 3) {
      step = 1;
      if (arguments.length < 2) {
        stop = start;
        start = 0;
      }
    }
    if ((stop - start) / step === Infinity) throw new Error("infinite range");
    var range = [], k = d3_range_integerScale(Math.abs(step)), i = -1, j;
    start *= k, stop *= k, step *= k;
    if (step < 0) while ((j = start + step * ++i) > stop) range.push(j / k); else while ((j = start + step * ++i) < stop) range.push(j / k);
    return range;
  };
  function d3_range_integerScale(x) {
    var k = 1;
    while (x * k % 1) k *= 10;
    return k;
  }
  d3.requote = function(s) {
    return s.replace(d3_requote_re, "\\$&");
  };
  var d3_requote_re = /[\\\^\$\*\+\?\|\[\]\(\)\.\{\}]/g;
  d3.round = function(x, n) {
    return n ? Math.round(x * (n = Math.pow(10, n))) / n : Math.round(x);
  };
  d3.xhr = function(url, mime, callback) {
    var req = new XMLHttpRequest;
    if (arguments.length < 3) callback = mime, mime = null; else if (mime && req.overrideMimeType) req.overrideMimeType(mime);
    req.open("GET", url, true);
    if (mime) req.setRequestHeader("Accept", mime);
    req.onreadystatechange = function() {
      if (req.readyState === 4) {
        var s = req.status;
        callback(!s && req.response || s >= 200 && s < 300 || s === 304 ? req : null);
      }
    };
    req.send(null);
  };
  d3.text = function(url, mime, callback) {
    function ready(req) {
      callback(req && req.responseText);
    }
    if (arguments.length < 3) {
      callback = mime;
      mime = null;
    }
    d3.xhr(url, mime, ready);
  };
  d3.json = function(url, callback) {
    d3.text(url, "application/json", function(text) {
      callback(text ? JSON.parse(text) : null);
    });
  };
  d3.html = function(url, callback) {
    d3.text(url, "text/html", function(text) {
      if (text != null) {
        var range = document.createRange();
        range.selectNode(document.body);
        text = range.createContextualFragment(text);
      }
      callback(text);
    });
  };
  d3.xml = function(url, mime, callback) {
    function ready(req) {
      callback(req && req.responseXML);
    }
    if (arguments.length < 3) {
      callback = mime;
      mime = null;
    }
    d3.xhr(url, mime, ready);
  };
  var d3_nsPrefix = {
    svg: "http://www.w3.org/2000/svg",
    xhtml: "http://www.w3.org/1999/xhtml",
    xlink: "http://www.w3.org/1999/xlink",
    xml: "http://www.w3.org/XML/1998/namespace",
    xmlns: "http://www.w3.org/2000/xmlns/"
  };
  d3.ns = {
    prefix: d3_nsPrefix,
    qualify: function(name) {
      var i = name.indexOf(":"), prefix = name;
      if (i >= 0) {
        prefix = name.substring(0, i);
        name = name.substring(i + 1);
      }
      return d3_nsPrefix.hasOwnProperty(prefix) ? {
        space: d3_nsPrefix[prefix],
        local: name
      } : name;
    }
  };
  d3.dispatch = function() {
    var dispatch = new d3_dispatch, i = -1, n = arguments.length;
    while (++i < n) dispatch[arguments[i]] = d3_dispatch_event(dispatch);
    return dispatch;
  };
  function d3_dispatch() {}
  d3_dispatch.prototype.on = function(type, listener) {
    var i = type.indexOf("."), name = "";
    if (i > 0) {
      name = type.substring(i + 1);
      type = type.substring(0, i);
    }
    return arguments.length < 2 ? this[type].on(name) : this[type].on(name, listener);
  };
  function d3_dispatch_event(dispatch) {
    var listeners = [], listenerByName = new d3_Map;
    function event() {
      var z = listeners, i = -1, n = z.length, l;
      while (++i < n) if (l = z[i].on) l.apply(this, arguments);
      return dispatch;
    }
    event.on = function(name, listener) {
      var l = listenerByName.get(name), i;
      if (arguments.length < 2) return l && l.on;
      if (l) {
        l.on = null;
        listeners = listeners.slice(0, i = listeners.indexOf(l)).concat(listeners.slice(i + 1));
        listenerByName.remove(name);
      }
      if (listener) listeners.push(listenerByName.set(name, {
        on: listener
      }));
      return dispatch;
    };
    return event;
  }
  d3.format = function(specifier) {
    var match = d3_format_re.exec(specifier), fill = match[1] || " ", sign = match[3] || "", zfill = match[5], width = +match[6], comma = match[7], precision = match[8], type = match[9], scale = 1, suffix = "", integer = false;
    if (precision) precision = +precision.substring(1);
    if (zfill) {
      fill = "0";
      if (comma) width -= Math.floor((width - 1) / 4);
    }
    switch (type) {
     case "n":
      comma = true;
      type = "g";
      break;
     case "%":
      scale = 100;
      suffix = "%";
      type = "f";
      break;
     case "p":
      scale = 100;
      suffix = "%";
      type = "r";
      break;
     case "d":
      integer = true;
      precision = 0;
      break;
     case "s":
      scale = -1;
      type = "r";
      break;
    }
    if (type == "r" && !precision) type = "g";
    type = d3_format_types.get(type) || d3_format_typeDefault;
    return function(value) {
      if (integer && value % 1) return "";
      var negative = value < 0 && (value = -value) ? "−" : sign;
      if (scale < 0) {
        var prefix = d3.formatPrefix(value, precision);
        value = prefix.scale(value);
        suffix = prefix.symbol;
      } else {
        value *= scale;
      }
      value = type(value, precision);
      if (zfill) {
        var length = value.length + negative.length;
        if (length < width) value = (new Array(width - length + 1)).join(fill) + value;
        if (comma) value = d3_format_group(value);
        value = negative + value;
      } else {
        if (comma) value = d3_format_group(value);
        value = negative + value;
        var length = value.length;
        if (length < width) value = (new Array(width - length + 1)).join(fill) + value;
      }
      return value + suffix;
    };
  };
  var d3_format_re = /(?:([^{])?([<>=^]))?([+\- ])?(#)?(0)?([0-9]+)?(,)?(\.[0-9]+)?([a-zA-Z%])?/;
  var d3_format_types = d3.map({
    g: function(x, p) {
      return x.toPrecision(p);
    },
    e: function(x, p) {
      return x.toExponential(p);
    },
    f: function(x, p) {
      return x.toFixed(p);
    },
    r: function(x, p) {
      return d3.round(x, p = d3_format_precision(x, p)).toFixed(Math.max(0, Math.min(20, p)));
    }
  });
  function d3_format_precision(x, p) {
    return p - (x ? 1 + Math.floor(Math.log(x + Math.pow(10, 1 + Math.floor(Math.log(x) / Math.LN10) - p)) / Math.LN10) : 1);
  }
  function d3_format_typeDefault(x) {
    return x + "";
  }
  function d3_format_group(value) {
    var i = value.lastIndexOf("."), f = i >= 0 ? value.substring(i) : (i = value.length, ""), t = [];
    while (i > 0) t.push(value.substring(i -= 3, i + 3));
    return t.reverse().join(",") + f;
  }
  var d3_formatPrefixes = [ "y", "z", "a", "f", "p", "n", "μ", "m", "", "k", "M", "G", "T", "P", "E", "Z", "Y" ].map(d3_formatPrefix);
  d3.formatPrefix = function(value, precision) {
    var i = 0;
    if (value) {
      if (value < 0) value *= -1;
      if (precision) value = d3.round(value, d3_format_precision(value, precision));
      i = 1 + Math.floor(1e-12 + Math.log(value) / Math.LN10);
      i = Math.max(-24, Math.min(24, Math.floor((i <= 0 ? i + 1 : i - 1) / 3) * 3));
    }
    return d3_formatPrefixes[8 + i / 3];
  };
  function d3_formatPrefix(d, i) {
    var k = Math.pow(10, Math.abs(8 - i) * 3);
    return {
      scale: i > 8 ? function(d) {
        return d / k;
      } : function(d) {
        return d * k;
      },
      symbol: d
    };
  }
  var d3_ease_quad = d3_ease_poly(2), d3_ease_cubic = d3_ease_poly(3), d3_ease_default = function() {
    return d3_ease_identity;
  };
  var d3_ease = d3.map({
    linear: d3_ease_default,
    poly: d3_ease_poly,
    quad: function() {
      return d3_ease_quad;
    },
    cubic: function() {
      return d3_ease_cubic;
    },
    sin: function() {
      return d3_ease_sin;
    },
    exp: function() {
      return d3_ease_exp;
    },
    circle: function() {
      return d3_ease_circle;
    },
    elastic: d3_ease_elastic,
    back: d3_ease_back,
    bounce: function() {
      return d3_ease_bounce;
    }
  });
  var d3_ease_mode = d3.map({
    "in": d3_ease_identity,
    out: d3_ease_reverse,
    "in-out": d3_ease_reflect,
    "out-in": function(f) {
      return d3_ease_reflect(d3_ease_reverse(f));
    }
  });
  d3.ease = function(name) {
    var i = name.indexOf("-"), t = i >= 0 ? name.substring(0, i) : name, m = i >= 0 ? name.substring(i + 1) : "in";
    t = d3_ease.get(t) || d3_ease_default;
    m = d3_ease_mode.get(m) || d3_ease_identity;
    return d3_ease_clamp(m(t.apply(null, Array.prototype.slice.call(arguments, 1))));
  };
  function d3_ease_clamp(f) {
    return function(t) {
      return t <= 0 ? 0 : t >= 1 ? 1 : f(t);
    };
  }
  function d3_ease_reverse(f) {
    return function(t) {
      return 1 - f(1 - t);
    };
  }
  function d3_ease_reflect(f) {
    return function(t) {
      return .5 * (t < .5 ? f(2 * t) : 2 - f(2 - 2 * t));
    };
  }
  function d3_ease_identity(t) {
    return t;
  }
  function d3_ease_poly(e) {
    return function(t) {
      return Math.pow(t, e);
    };
  }
  function d3_ease_sin(t) {
    return 1 - Math.cos(t * Math.PI / 2);
  }
  function d3_ease_exp(t) {
    return Math.pow(2, 10 * (t - 1));
  }
  function d3_ease_circle(t) {
    return 1 - Math.sqrt(1 - t * t);
  }
  function d3_ease_elastic(a, p) {
    var s;
    if (arguments.length < 2) p = .45;
    if (arguments.length < 1) {
      a = 1;
      s = p / 4;
    } else s = p / (2 * Math.PI) * Math.asin(1 / a);
    return function(t) {
      return 1 + a * Math.pow(2, 10 * -t) * Math.sin((t - s) * 2 * Math.PI / p);
    };
  }
  function d3_ease_back(s) {
    if (!s) s = 1.70158;
    return function(t) {
      return t * t * ((s + 1) * t - s);
    };
  }
  function d3_ease_bounce(t) {
    return t < 1 / 2.75 ? 7.5625 * t * t : t < 2 / 2.75 ? 7.5625 * (t -= 1.5 / 2.75) * t + .75 : t < 2.5 / 2.75 ? 7.5625 * (t -= 2.25 / 2.75) * t + .9375 : 7.5625 * (t -= 2.625 / 2.75) * t + .984375;
  }
  d3.event = null;
  function d3_eventCancel() {
    d3.event.stopPropagation();
    d3.event.preventDefault();
  }
  function d3_eventSource() {
    var e = d3.event, s;
    while (s = e.sourceEvent) e = s;
    return e;
  }
  function d3_eventDispatch(target) {
    var dispatch = new d3_dispatch, i = 0, n = arguments.length;
    while (++i < n) dispatch[arguments[i]] = d3_dispatch_event(dispatch);
    dispatch.of = function(thiz, argumentz) {
      return function(e1) {
        try {
          var e0 = e1.sourceEvent = d3.event;
          e1.target = target;
          d3.event = e1;
          dispatch[e1.type].apply(thiz, argumentz);
        } finally {
          d3.event = e0;
        }
      };
    };
    return dispatch;
  }
  d3.transform = function(string) {
    var g = document.createElementNS(d3.ns.prefix.svg, "g");
    return (d3.transform = function(string) {
      g.setAttribute("transform", string);
      var t = g.transform.baseVal.consolidate();
      return new d3_transform(t ? t.matrix : d3_transformIdentity);
    })(string);
  };
  function d3_transform(m) {
    var r0 = [ m.a, m.b ], r1 = [ m.c, m.d ], kx = d3_transformNormalize(r0), kz = d3_transformDot(r0, r1), ky = d3_transformNormalize(d3_transformCombine(r1, r0, -kz)) || 0;
    if (r0[0] * r1[1] < r1[0] * r0[1]) {
      r0[0] *= -1;
      r0[1] *= -1;
      kx *= -1;
      kz *= -1;
    }
    this.rotate = (kx ? Math.atan2(r0[1], r0[0]) : Math.atan2(-r1[0], r1[1])) * d3_transformDegrees;
    this.translate = [ m.e, m.f ];
    this.scale = [ kx, ky ];
    this.skew = ky ? Math.atan2(kz, ky) * d3_transformDegrees : 0;
  }
  d3_transform.prototype.toString = function() {
    return "translate(" + this.translate + ")rotate(" + this.rotate + ")skewX(" + this.skew + ")scale(" + this.scale + ")";
  };
  function d3_transformDot(a, b) {
    return a[0] * b[0] + a[1] * b[1];
  }
  function d3_transformNormalize(a) {
    var k = Math.sqrt(d3_transformDot(a, a));
    if (k) {
      a[0] /= k;
      a[1] /= k;
    }
    return k;
  }
  function d3_transformCombine(a, b, k) {
    a[0] += k * b[0];
    a[1] += k * b[1];
    return a;
  }
  var d3_transformDegrees = 180 / Math.PI, d3_transformIdentity = {
    a: 1,
    b: 0,
    c: 0,
    d: 1,
    e: 0,
    f: 0
  };
  d3.interpolate = function(a, b) {
    var i = d3.interpolators.length, f;
    while (--i >= 0 && !(f = d3.interpolators[i](a, b))) ;
    return f;
  };
  d3.interpolateNumber = function(a, b) {
    b -= a;
    return function(t) {
      return a + b * t;
    };
  };
  d3.interpolateRound = function(a, b) {
    b -= a;
    return function(t) {
      return Math.round(a + b * t);
    };
  };
  d3.interpolateString = function(a, b) {
    var m, i, j, s0 = 0, s1 = 0, s = [], q = [], n, o;
    d3_interpolate_number.lastIndex = 0;
    for (i = 0; m = d3_interpolate_number.exec(b); ++i) {
      if (m.index) s.push(b.substring(s0, s1 = m.index));
      q.push({
        i: s.length,
        x: m[0]
      });
      s.push(null);
      s0 = d3_interpolate_number.lastIndex;
    }
    if (s0 < b.length) s.push(b.substring(s0));
    for (i = 0, n = q.length; (m = d3_interpolate_number.exec(a)) && i < n; ++i) {
      o = q[i];
      if (o.x == m[0]) {
        if (o.i) {
          if (s[o.i + 1] == null) {
            s[o.i - 1] += o.x;
            s.splice(o.i, 1);
            for (j = i + 1; j < n; ++j) q[j].i--;
          } else {
            s[o.i - 1] += o.x + s[o.i + 1];
            s.splice(o.i, 2);
            for (j = i + 1; j < n; ++j) q[j].i -= 2;
          }
        } else {
          if (s[o.i + 1] == null) {
            s[o.i] = o.x;
          } else {
            s[o.i] = o.x + s[o.i + 1];
            s.splice(o.i + 1, 1);
            for (j = i + 1; j < n; ++j) q[j].i--;
          }
        }
        q.splice(i, 1);
        n--;
        i--;
      } else {
        o.x = d3.interpolateNumber(parseFloat(m[0]), parseFloat(o.x));
      }
    }
    while (i < n) {
      o = q.pop();
      if (s[o.i + 1] == null) {
        s[o.i] = o.x;
      } else {
        s[o.i] = o.x + s[o.i + 1];
        s.splice(o.i + 1, 1);
      }
      n--;
    }
    if (s.length === 1) {
      return s[0] == null ? q[0].x : function() {
        return b;
      };
    }
    return function(t) {
      for (i = 0; i < n; ++i) s[(o = q[i]).i] = o.x(t);
      return s.join("");
    };
  };
  d3.interpolateTransform = function(a, b) {
    if (n = d3_interpolateTransformSimilar(a, b)) return n;
    var s = [], q = [], n, A = d3.transform(a), B = d3.transform(b), ta = A.translate, tb = B.translate, ra = A.rotate, rb = B.rotate, wa = A.skew, wb = B.skew, ka = A.scale, kb = B.scale;
    if (ta[0] != tb[0] || ta[1] != tb[1]) {
      s.push("translate(", null, ",", null, ")");
      q.push({
        i: 1,
        x: d3.interpolateNumber(ta[0], tb[0])
      }, {
        i: 3,
        x: d3.interpolateNumber(ta[1], tb[1])
      });
    } else if (tb[0] || tb[1]) {
      s.push("translate(" + tb + ")");
    } else {
      s.push("");
    }
    if (ra != rb) {
      if (ra - rb > 180) rb += 360; else if (rb - ra > 180) ra += 360;
      q.push({
        i: s.push(s.pop() + "rotate(", null, ")") - 2,
        x: d3.interpolateNumber(ra, rb)
      });
    } else if (rb) {
      s.push(s.pop() + "rotate(" + rb + ")");
    }
    if (wa != wb) {
      q.push({
        i: s.push(s.pop() + "skewX(", null, ")") - 2,
        x: d3.interpolateNumber(wa, wb)
      });
    } else if (wb) {
      s.push(s.pop() + "skewX(" + wb + ")");
    }
    if (ka[0] != kb[0] || ka[1] != kb[1]) {
      n = s.push(s.pop() + "scale(", null, ",", null, ")");
      q.push({
        i: n - 4,
        x: d3.interpolateNumber(ka[0], kb[0])
      }, {
        i: n - 2,
        x: d3.interpolateNumber(ka[1], kb[1])
      });
    } else if (kb[0] != 1 || kb[1] != 1) {
      s.push(s.pop() + "scale(" + kb + ")");
    }
    n = q.length;
    return function(t) {
      var i = -1, o;
      while (++i < n) s[(o = q[i]).i] = o.x(t);
      return s.join("");
    };
  };
  var d3_interpolateTransformTypes = [ "", "", "translate", "scale", "rotate", "skewX", "skewY" ];
  var d3_interpolateTransformSimilar = function(a, b) {
    var ga = document.createElementNS(d3.ns.prefix.svg, "g"), gb = document.createElementNS(d3.ns.prefix.svg, "g");
    return (d3_interpolateTransformSimilar = function(a, b) {
      ga.setAttribute("transform", a);
      gb.setAttribute("transform", b);
      a = ga.transform.baseVal;
      b = gb.transform.baseVal;
      var sa = [], sb = [], i = -1, n = a.numberOfItems, m = b.numberOfItems, ta, tb, type;
      if (m !== n) {
        if (!m) b = d3_interpolateTransformIdentity(a); else if (!n) a = d3_interpolateTransformIdentity(b), n = m; else return;
      } else if (!m) return;
      while (++i < n) {
        ta = a.getItem(i);
        tb = b.getItem(i);
        type = ta.type;
        if (type !== tb.type || !type) return;
        switch (type) {
         case 1:
          {
            sa.push(new d3_transform(ta.matrix));
            sb.push(new d3_transform(tb.matrix));
            continue;
          }
         case 2:
          {
            ra = ta.matrix.e + "," + ta.matrix.f;
            rb = tb.matrix.e + "," + tb.matrix.f;
            break;
          }
         case 3:
          {
            ra = ta.matrix.a + "," + ta.matrix.d;
            rb = tb.matrix.a + "," + tb.matrix.d;
            break;
          }
         default:
          {
            ra = ta.angle;
            rb = tb.angle;
          }
        }
        sa.push(type = d3_interpolateTransformTypes[type], "(", ra, ")");
        sb.push(type, "(", rb, ")");
      }
      return d3.interpolateString(sa.join(""), sb.join(""));
    })(a, b);
  };
  function d3_interpolateTransformIdentity(a) {
    return {
      getItem: function(i) {
        return {
          type: a.getItem(i).type,
          angle: 0,
          matrix: d3_transformIdentity
        };
      }
    };
  }
  d3.interpolateRgb = function(a, b) {
    a = d3.rgb(a);
    b = d3.rgb(b);
    var ar = a.r, ag = a.g, ab = a.b, br = b.r - ar, bg = b.g - ag, bb = b.b - ab;
    return function(t) {
      return "#" + d3_rgb_hex(Math.round(ar + br * t)) + d3_rgb_hex(Math.round(ag + bg * t)) + d3_rgb_hex(Math.round(ab + bb * t));
    };
  };
  d3.interpolateHsl = function(a, b) {
    a = d3.hsl(a);
    b = d3.hsl(b);
    var h0 = a.h, s0 = a.s, l0 = a.l, h1 = b.h - h0, s1 = b.s - s0, l1 = b.l - l0;
    if (h1 > 180) h1 -= 360; else if (h1 < -180) h1 += 360;
    return function(t) {
      return d3_hsl_rgb(h0 + h1 * t, s0 + s1 * t, l0 + l1 * t).toString();
    };
  };
  d3.interpolateArray = function(a, b) {
    var x = [], c = [], na = a.length, nb = b.length, n0 = Math.min(a.length, b.length), i;
    for (i = 0; i < n0; ++i) x.push(d3.interpolate(a[i], b[i]));
    for (; i < na; ++i) c[i] = a[i];
    for (; i < nb; ++i) c[i] = b[i];
    return function(t) {
      for (i = 0; i < n0; ++i) c[i] = x[i](t);
      return c;
    };
  };
  d3.interpolateObject = function(a, b) {
    var i = {}, c = {}, k;
    for (k in a) {
      if (k in b) {
        i[k] = d3_interpolateByName(k)(a[k], b[k]);
      } else {
        c[k] = a[k];
      }
    }
    for (k in b) {
      if (!(k in a)) {
        c[k] = b[k];
      }
    }
    return function(t) {
      for (k in i) c[k] = i[k](t);
      return c;
    };
  };
  var d3_interpolate_number = /[-+]?(?:\d+\.?\d*|\.?\d+)(?:[eE][-+]?\d+)?/g;
  function d3_interpolateByName(n) {
    return n == "transform" ? d3.interpolateTransform : d3.interpolate;
  }
  d3.interpolators = [ d3.interpolateObject, function(a, b) {
    return b instanceof Array && d3.interpolateArray(a, b);
  }, function(a, b) {
    return (typeof a === "string" || typeof b === "string") && d3.interpolateString(a + "", b + "");
  }, function(a, b) {
    return (typeof b === "string" ? d3_rgb_names.has(b) || /^(#|rgb\(|hsl\()/.test(b) : b instanceof d3_Rgb || b instanceof d3_Hsl) && d3.interpolateRgb(a, b);
  }, function(a, b) {
    return !isNaN(a = +a) && !isNaN(b = +b) && d3.interpolateNumber(a, b);
  } ];
  function d3_uninterpolateNumber(a, b) {
    b = b - (a = +a) ? 1 / (b - a) : 0;
    return function(x) {
      return (x - a) * b;
    };
  }
  function d3_uninterpolateClamp(a, b) {
    b = b - (a = +a) ? 1 / (b - a) : 0;
    return function(x) {
      return Math.max(0, Math.min(1, (x - a) * b));
    };
  }
  d3.rgb = function(r, g, b) {
    return arguments.length === 1 ? r instanceof d3_Rgb ? d3_rgb(r.r, r.g, r.b) : d3_rgb_parse("" + r, d3_rgb, d3_hsl_rgb) : d3_rgb(~~r, ~~g, ~~b);
  };
  function d3_rgb(r, g, b) {
    return new d3_Rgb(r, g, b);
  }
  function d3_Rgb(r, g, b) {
    this.r = r;
    this.g = g;
    this.b = b;
  }
  d3_Rgb.prototype.brighter = function(k) {
    k = Math.pow(.7, arguments.length ? k : 1);
    var r = this.r, g = this.g, b = this.b, i = 30;
    if (!r && !g && !b) return d3_rgb(i, i, i);
    if (r && r < i) r = i;
    if (g && g < i) g = i;
    if (b && b < i) b = i;
    return d3_rgb(Math.min(255, Math.floor(r / k)), Math.min(255, Math.floor(g / k)), Math.min(255, Math.floor(b / k)));
  };
  d3_Rgb.prototype.darker = function(k) {
    k = Math.pow(.7, arguments.length ? k : 1);
    return d3_rgb(Math.floor(k * this.r), Math.floor(k * this.g), Math.floor(k * this.b));
  };
  d3_Rgb.prototype.hsl = function() {
    return d3_rgb_hsl(this.r, this.g, this.b);
  };
  d3_Rgb.prototype.toString = function() {
    return "#" + d3_rgb_hex(this.r) + d3_rgb_hex(this.g) + d3_rgb_hex(this.b);
  };
  function d3_rgb_hex(v) {
    return v < 16 ? "0" + Math.max(0, v).toString(16) : Math.min(255, v).toString(16);
  }
  function d3_rgb_parse(format, rgb, hsl) {
    var r = 0, g = 0, b = 0, m1, m2, name;
    m1 = /([a-z]+)\((.*)\)/i.exec(format);
    if (m1) {
      m2 = m1[2].split(",");
      switch (m1[1]) {
       case "hsl":
        {
          return hsl(parseFloat(m2[0]), parseFloat(m2[1]) / 100, parseFloat(m2[2]) / 100);
        }
       case "rgb":
        {
          return rgb(d3_rgb_parseNumber(m2[0]), d3_rgb_parseNumber(m2[1]), d3_rgb_parseNumber(m2[2]));
        }
      }
    }
    if (name = d3_rgb_names.get(format)) return rgb(name.r, name.g, name.b);
    if (format != null && format.charAt(0) === "#") {
      if (format.length === 4) {
        r = format.charAt(1);
        r += r;
        g = format.charAt(2);
        g += g;
        b = format.charAt(3);
        b += b;
      } else if (format.length === 7) {
        r = format.substring(1, 3);
        g = format.substring(3, 5);
        b = format.substring(5, 7);
      }
      r = parseInt(r, 16);
      g = parseInt(g, 16);
      b = parseInt(b, 16);
    }
    return rgb(r, g, b);
  }
  function d3_rgb_hsl(r, g, b) {
    var min = Math.min(r /= 255, g /= 255, b /= 255), max = Math.max(r, g, b), d = max - min, h, s, l = (max + min) / 2;
    if (d) {
      s = l < .5 ? d / (max + min) : d / (2 - max - min);
      if (r == max) h = (g - b) / d + (g < b ? 6 : 0); else if (g == max) h = (b - r) / d + 2; else h = (r - g) / d + 4;
      h *= 60;
    } else {
      s = h = 0;
    }
    return d3_hsl(h, s, l);
  }
  function d3_rgb_parseNumber(c) {
    var f = parseFloat(c);
    return c.charAt(c.length - 1) === "%" ? Math.round(f * 2.55) : f;
  }
  var d3_rgb_names = d3.map({
    aliceblue: "#f0f8ff",
    antiquewhite: "#faebd7",
    aqua: "#00ffff",
    aquamarine: "#7fffd4",
    azure: "#f0ffff",
    beige: "#f5f5dc",
    bisque: "#ffe4c4",
    black: "#000000",
    blanchedalmond: "#ffebcd",
    blue: "#0000ff",
    blueviolet: "#8a2be2",
    brown: "#a52a2a",
    burlywood: "#deb887",
    cadetblue: "#5f9ea0",
    chartreuse: "#7fff00",
    chocolate: "#d2691e",
    coral: "#ff7f50",
    cornflowerblue: "#6495ed",
    cornsilk: "#fff8dc",
    crimson: "#dc143c",
    cyan: "#00ffff",
    darkblue: "#00008b",
    darkcyan: "#008b8b",
    darkgoldenrod: "#b8860b",
    darkgray: "#a9a9a9",
    darkgreen: "#006400",
    darkgrey: "#a9a9a9",
    darkkhaki: "#bdb76b",
    darkmagenta: "#8b008b",
    darkolivegreen: "#556b2f",
    darkorange: "#ff8c00",
    darkorchid: "#9932cc",
    darkred: "#8b0000",
    darksalmon: "#e9967a",
    darkseagreen: "#8fbc8f",
    darkslateblue: "#483d8b",
    darkslategray: "#2f4f4f",
    darkslategrey: "#2f4f4f",
    darkturquoise: "#00ced1",
    darkviolet: "#9400d3",
    deeppink: "#ff1493",
    deepskyblue: "#00bfff",
    dimgray: "#696969",
    dimgrey: "#696969",
    dodgerblue: "#1e90ff",
    firebrick: "#b22222",
    floralwhite: "#fffaf0",
    forestgreen: "#228b22",
    fuchsia: "#ff00ff",
    gainsboro: "#dcdcdc",
    ghostwhite: "#f8f8ff",
    gold: "#ffd700",
    goldenrod: "#daa520",
    gray: "#808080",
    green: "#008000",
    greenyellow: "#adff2f",
    grey: "#808080",
    honeydew: "#f0fff0",
    hotpink: "#ff69b4",
    indianred: "#cd5c5c",
    indigo: "#4b0082",
    ivory: "#fffff0",
    khaki: "#f0e68c",
    lavender: "#e6e6fa",
    lavenderblush: "#fff0f5",
    lawngreen: "#7cfc00",
    lemonchiffon: "#fffacd",
    lightblue: "#add8e6",
    lightcoral: "#f08080",
    lightcyan: "#e0ffff",
    lightgoldenrodyellow: "#fafad2",
    lightgray: "#d3d3d3",
    lightgreen: "#90ee90",
    lightgrey: "#d3d3d3",
    lightpink: "#ffb6c1",
    lightsalmon: "#ffa07a",
    lightseagreen: "#20b2aa",
    lightskyblue: "#87cefa",
    lightslategray: "#778899",
    lightslategrey: "#778899",
    lightsteelblue: "#b0c4de",
    lightyellow: "#ffffe0",
    lime: "#00ff00",
    limegreen: "#32cd32",
    linen: "#faf0e6",
    magenta: "#ff00ff",
    maroon: "#800000",
    mediumaquamarine: "#66cdaa",
    mediumblue: "#0000cd",
    mediumorchid: "#ba55d3",
    mediumpurple: "#9370db",
    mediumseagreen: "#3cb371",
    mediumslateblue: "#7b68ee",
    mediumspringgreen: "#00fa9a",
    mediumturquoise: "#48d1cc",
    mediumvioletred: "#c71585",
    midnightblue: "#191970",
    mintcream: "#f5fffa",
    mistyrose: "#ffe4e1",
    moccasin: "#ffe4b5",
    navajowhite: "#ffdead",
    navy: "#000080",
    oldlace: "#fdf5e6",
    olive: "#808000",
    olivedrab: "#6b8e23",
    orange: "#ffa500",
    orangered: "#ff4500",
    orchid: "#da70d6",
    palegoldenrod: "#eee8aa",
    palegreen: "#98fb98",
    paleturquoise: "#afeeee",
    palevioletred: "#db7093",
    papayawhip: "#ffefd5",
    peachpuff: "#ffdab9",
    peru: "#cd853f",
    pink: "#ffc0cb",
    plum: "#dda0dd",
    powderblue: "#b0e0e6",
    purple: "#800080",
    red: "#ff0000",
    rosybrown: "#bc8f8f",
    royalblue: "#4169e1",
    saddlebrown: "#8b4513",
    salmon: "#fa8072",
    sandybrown: "#f4a460",
    seagreen: "#2e8b57",
    seashell: "#fff5ee",
    sienna: "#a0522d",
    silver: "#c0c0c0",
    skyblue: "#87ceeb",
    slateblue: "#6a5acd",
    slategray: "#708090",
    slategrey: "#708090",
    snow: "#fffafa",
    springgreen: "#00ff7f",
    steelblue: "#4682b4",
    tan: "#d2b48c",
    teal: "#008080",
    thistle: "#d8bfd8",
    tomato: "#ff6347",
    turquoise: "#40e0d0",
    violet: "#ee82ee",
    wheat: "#f5deb3",
    white: "#ffffff",
    whitesmoke: "#f5f5f5",
    yellow: "#ffff00",
    yellowgreen: "#9acd32"
  });
  d3_rgb_names.forEach(function(key, value) {
    d3_rgb_names.set(key, d3_rgb_parse(value, d3_rgb, d3_hsl_rgb));
  });
  d3.hsl = function(h, s, l) {
    return arguments.length === 1 ? h instanceof d3_Hsl ? d3_hsl(h.h, h.s, h.l) : d3_rgb_parse("" + h, d3_rgb_hsl, d3_hsl) : d3_hsl(+h, +s, +l);
  };
  function d3_hsl(h, s, l) {
    return new d3_Hsl(h, s, l);
  }
  function d3_Hsl(h, s, l) {
    this.h = h;
    this.s = s;
    this.l = l;
  }
  d3_Hsl.prototype.brighter = function(k) {
    k = Math.pow(.7, arguments.length ? k : 1);
    return d3_hsl(this.h, this.s, this.l / k);
  };
  d3_Hsl.prototype.darker = function(k) {
    k = Math.pow(.7, arguments.length ? k : 1);
    return d3_hsl(this.h, this.s, k * this.l);
  };
  d3_Hsl.prototype.rgb = function() {
    return d3_hsl_rgb(this.h, this.s, this.l);
  };
  d3_Hsl.prototype.toString = function() {
    return this.rgb().toString();
  };
  function d3_hsl_rgb(h, s, l) {
    var m1, m2;
    h = h % 360;
    if (h < 0) h += 360;
    s = s < 0 ? 0 : s > 1 ? 1 : s;
    l = l < 0 ? 0 : l > 1 ? 1 : l;
    m2 = l <= .5 ? l * (1 + s) : l + s - l * s;
    m1 = 2 * l - m2;
    function v(h) {
      if (h > 360) h -= 360; else if (h < 0) h += 360;
      if (h < 60) return m1 + (m2 - m1) * h / 60;
      if (h < 180) return m2;
      if (h < 240) return m1 + (m2 - m1) * (240 - h) / 60;
      return m1;
    }
    function vv(h) {
      return Math.round(v(h) * 255);
    }
    return d3_rgb(vv(h + 120), vv(h), vv(h - 120));
  }
  function d3_selection(groups) {
    d3_arraySubclass(groups, d3_selectionPrototype);
    return groups;
  }
  var d3_select = function(s, n) {
    return n.querySelector(s);
  }, d3_selectAll = function(s, n) {
    return n.querySelectorAll(s);
  }, d3_selectRoot = document.documentElement, d3_selectMatcher = d3_selectRoot.matchesSelector || d3_selectRoot.webkitMatchesSelector || d3_selectRoot.mozMatchesSelector || d3_selectRoot.msMatchesSelector || d3_selectRoot.oMatchesSelector, d3_selectMatches = function(n, s) {
    return d3_selectMatcher.call(n, s);
  };
  if (typeof Sizzle === "function") {
    d3_select = function(s, n) {
      return Sizzle(s, n)[0] || null;
    };
    d3_selectAll = function(s, n) {
      return Sizzle.uniqueSort(Sizzle(s, n));
    };
    d3_selectMatches = Sizzle.matchesSelector;
  }
  var d3_selectionPrototype = [];
  d3.selection = function() {
    return d3_selectionRoot;
  };
  d3.selection.prototype = d3_selectionPrototype;
  d3_selectionPrototype.select = function(selector) {
    var subgroups = [], subgroup, subnode, group, node;
    if (typeof selector !== "function") selector = d3_selection_selector(selector);
    for (var j = -1, m = this.length; ++j < m; ) {
      subgroups.push(subgroup = []);
      subgroup.parentNode = (group = this[j]).parentNode;
      for (var i = -1, n = group.length; ++i < n; ) {
        if (node = group[i]) {
          subgroup.push(subnode = selector.call(node, node.__data__, i));
          if (subnode && "__data__" in node) subnode.__data__ = node.__data__;
        } else {
          subgroup.push(null);
        }
      }
    }
    return d3_selection(subgroups);
  };
  function d3_selection_selector(selector) {
    return function() {
      return d3_select(selector, this);
    };
  }
  d3_selectionPrototype.selectAll = function(selector) {
    var subgroups = [], subgroup, node;
    if (typeof selector !== "function") selector = d3_selection_selectorAll(selector);
    for (var j = -1, m = this.length; ++j < m; ) {
      for (var group = this[j], i = -1, n = group.length; ++i < n; ) {
        if (node = group[i]) {
          subgroups.push(subgroup = d3_array(selector.call(node, node.__data__, i)));
          subgroup.parentNode = node;
        }
      }
    }
    return d3_selection(subgroups);
  };
  function d3_selection_selectorAll(selector) {
    return function() {
      return d3_selectAll(selector, this);
    };
  }
  d3_selectionPrototype.attr = function(name, value) {
    name = d3.ns.qualify(name);
    if (arguments.length < 2) {
      var node = this.node();
      return name.local ? node.getAttributeNS(name.space, name.local) : node.getAttribute(name);
    }
    function attrNull() {
      this.removeAttribute(name);
    }
    function attrNullNS() {
      this.removeAttributeNS(name.space, name.local);
    }
    function attrConstant() {
      this.setAttribute(name, value);
    }
    function attrConstantNS() {
      this.setAttributeNS(name.space, name.local, value);
    }
    function attrFunction() {
      var x = value.apply(this, arguments);
      if (x == null) this.removeAttribute(name); else this.setAttribute(name, x);
    }
    function attrFunctionNS() {
      var x = value.apply(this, arguments);
      if (x == null) this.removeAttributeNS(name.space, name.local); else this.setAttributeNS(name.space, name.local, x);
    }
    return this.each(value == null ? name.local ? attrNullNS : attrNull : typeof value === "function" ? name.local ? attrFunctionNS : attrFunction : name.local ? attrConstantNS : attrConstant);
  };
  d3_selectionPrototype.classed = function(name, value) {
    var names = d3_collapse(name).split(" "), n = names.length, i = -1;
    if (arguments.length > 1) {
      while (++i < n) d3_selection_classed.call(this, names[i], value);
      return this;
    } else {
      while (++i < n) if (!d3_selection_classed.call(this, names[i])) return false;
      return true;
    }
  };
  function d3_selection_classed(name, value) {
    var re = new RegExp("(^|\\s+)" + d3.requote(name) + "(\\s+|$)", "g");
    if (arguments.length < 2) {
      var node = this.node();
      if (c = node.classList) return c.contains(name);
      var c = node.className;
      re.lastIndex = 0;
      return re.test(c.baseVal != null ? c.baseVal : c);
    }
    function classedAdd() {
      if (c = this.classList) return c.add(name);
      var c = this.className, cb = c.baseVal != null, cv = cb ? c.baseVal : c;
      re.lastIndex = 0;
      if (!re.test(cv)) {
        cv = d3_collapse(cv + " " + name);
        if (cb) c.baseVal = cv; else this.className = cv;
      }
    }
    function classedRemove() {
      if (c = this.classList) return c.remove(name);
      var c = this.className, cb = c.baseVal != null, cv = cb ? c.baseVal : c;
      if (cv) {
        cv = d3_collapse(cv.replace(re, " "));
        if (cb) c.baseVal = cv; else this.className = cv;
      }
    }
    function classedFunction() {
      (value.apply(this, arguments) ? classedAdd : classedRemove).call(this);
    }
    return this.each(typeof value === "function" ? classedFunction : value ? classedAdd : classedRemove);
  }
  d3_selectionPrototype.style = function(name, value, priority) {
    if (arguments.length < 3) priority = "";
    if (arguments.length < 2) return window.getComputedStyle(this.node(), null).getPropertyValue(name);
    function styleNull() {
      this.style.removeProperty(name);
    }
    function styleConstant() {
      this.style.setProperty(name, value, priority);
    }
    function styleFunction() {
      var x = value.apply(this, arguments);
      if (x == null) this.style.removeProperty(name); else this.style.setProperty(name, x, priority);
    }
    return this.each(value == null ? styleNull : typeof value === "function" ? styleFunction : styleConstant);
  };
  d3_selectionPrototype.property = function(name, value) {
    if (arguments.length < 2) return this.node()[name];
    function propertyNull() {
      delete this[name];
    }
    function propertyConstant() {
      this[name] = value;
    }
    function propertyFunction() {
      var x = value.apply(this, arguments);
      if (x == null) delete this[name]; else this[name] = x;
    }
    return this.each(value == null ? propertyNull : typeof value === "function" ? propertyFunction : propertyConstant);
  };
  d3_selectionPrototype.text = function(value) {
    return arguments.length < 1 ? this.node().textContent : this.each(typeof value === "function" ? function() {
      var v = value.apply(this, arguments);
      this.textContent = v == null ? "" : v;
    } : value == null ? function() {
      this.textContent = "";
    } : function() {
      this.textContent = value;
    });
  };
  d3_selectionPrototype.html = function(value) {
    return arguments.length < 1 ? this.node().innerHTML : this.each(typeof value === "function" ? function() {
      var v = value.apply(this, arguments);
      this.innerHTML = v == null ? "" : v;
    } : value == null ? function() {
      this.innerHTML = "";
    } : function() {
      this.innerHTML = value;
    });
  };
  d3_selectionPrototype.append = function(name) {
    name = d3.ns.qualify(name);
    function append() {
      return this.appendChild(document.createElementNS(this.namespaceURI, name));
    }
    function appendNS() {
      return this.appendChild(document.createElementNS(name.space, name.local));
    }
    return this.select(name.local ? appendNS : append);
  };
  d3_selectionPrototype.insert = function(name, before) {
    name = d3.ns.qualify(name);
    function insert() {
      return this.insertBefore(document.createElementNS(this.namespaceURI, name), d3_select(before, this));
    }
    function insertNS() {
      return this.insertBefore(document.createElementNS(name.space, name.local), d3_select(before, this));
    }
    return this.select(name.local ? insertNS : insert);
  };
  d3_selectionPrototype.remove = function() {
    return this.each(function() {
      var parent = this.parentNode;
      if (parent) parent.removeChild(this);
    });
  };
  d3_selectionPrototype.data = function(value, key) {
    var i = -1, n = this.length, group, node;
    if (!arguments.length) {
      value = new Array(n = (group = this[0]).length);
      while (++i < n) {
        if (node = group[i]) {
          value[i] = node.__data__;
        }
      }
      return value;
    }
    function bind(group, groupData) {
      var i, n = group.length, m = groupData.length, n0 = Math.min(n, m), n1 = Math.max(n, m), updateNodes = [], enterNodes = [], exitNodes = [], node, nodeData;
      if (key) {
        var nodeByKeyValue = new d3_Map, keyValues = [], keyValue, j = groupData.length;
        for (i = -1; ++i < n; ) {
          keyValue = key.call(node = group[i], node.__data__, i);
          if (nodeByKeyValue.has(keyValue)) {
            exitNodes[j++] = node;
          } else {
            nodeByKeyValue.set(keyValue, node);
          }
          keyValues.push(keyValue);
        }
        for (i = -1; ++i < m; ) {
          keyValue = key.call(groupData, nodeData = groupData[i], i);
          if (nodeByKeyValue.has(keyValue)) {
            updateNodes[i] = node = nodeByKeyValue.get(keyValue);
            node.__data__ = nodeData;
            enterNodes[i] = exitNodes[i] = null;
          } else {
            enterNodes[i] = d3_selection_dataNode(nodeData);
            updateNodes[i] = exitNodes[i] = null;
          }
          nodeByKeyValue.remove(keyValue);
        }
        for (i = -1; ++i < n; ) {
          if (nodeByKeyValue.has(keyValues[i])) {
            exitNodes[i] = group[i];
          }
        }
      } else {
        for (i = -1; ++i < n0; ) {
          node = group[i];
          nodeData = groupData[i];
          if (node) {
            node.__data__ = nodeData;
            updateNodes[i] = node;
            enterNodes[i] = exitNodes[i] = null;
          } else {
            enterNodes[i] = d3_selection_dataNode(nodeData);
            updateNodes[i] = exitNodes[i] = null;
          }
        }
        for (; i < m; ++i) {
          enterNodes[i] = d3_selection_dataNode(groupData[i]);
          updateNodes[i] = exitNodes[i] = null;
        }
        for (; i < n1; ++i) {
          exitNodes[i] = group[i];
          enterNodes[i] = updateNodes[i] = null;
        }
      }
      enterNodes.update = updateNodes;
      enterNodes.parentNode = updateNodes.parentNode = exitNodes.parentNode = group.parentNode;
      enter.push(enterNodes);
      update.push(updateNodes);
      exit.push(exitNodes);
    }
    var enter = d3_selection_enter([]), update = d3_selection([]), exit = d3_selection([]);
    if (typeof value === "function") {
      while (++i < n) {
        bind(group = this[i], value.call(group, group.parentNode.__data__, i));
      }
    } else {
      while (++i < n) {
        bind(group = this[i], value);
      }
    }
    update.enter = function() {
      return enter;
    };
    update.exit = function() {
      return exit;
    };
    return update;
  };
  function d3_selection_dataNode(data) {
    return {
      __data__: data
    };
  }
  d3_selectionPrototype.datum = d3_selectionPrototype.map = function(value) {
    return arguments.length < 1 ? this.property("__data__") : this.property("__data__", value);
  };
  d3_selectionPrototype.filter = function(filter) {
    var subgroups = [], subgroup, group, node;
    if (typeof filter !== "function") filter = d3_selection_filter(filter);
    for (var j = 0, m = this.length; j < m; j++) {
      subgroups.push(subgroup = []);
      subgroup.parentNode = (group = this[j]).parentNode;
      for (var i = 0, n = group.length; i < n; i++) {
        if ((node = group[i]) && filter.call(node, node.__data__, i)) {
          subgroup.push(node);
        }
      }
    }
    return d3_selection(subgroups);
  };
  function d3_selection_filter(selector) {
    return function() {
      return d3_selectMatches(this, selector);
    };
  }
  d3_selectionPrototype.order = function() {
    for (var j = -1, m = this.length; ++j < m; ) {
      for (var group = this[j], i = group.length - 1, next = group[i], node; --i >= 0; ) {
        if (node = group[i]) {
          if (next && next !== node.nextSibling) next.parentNode.insertBefore(node, next);
          next = node;
        }
      }
    }
    return this;
  };
  d3_selectionPrototype.sort = function(comparator) {
    comparator = d3_selection_sortComparator.apply(this, arguments);
    for (var j = -1, m = this.length; ++j < m; ) this[j].sort(comparator);
    return this.order();
  };
  function d3_selection_sortComparator(comparator) {
    if (!arguments.length) comparator = d3.ascending;
    return function(a, b) {
      return comparator(a && a.__data__, b && b.__data__);
    };
  }
  d3_selectionPrototype.on = function(type, listener, capture) {
    if (arguments.length < 3) capture = false;
    var name = "__on" + type, i = type.indexOf(".");
    if (i > 0) type = type.substring(0, i);
    if (arguments.length < 2) return (i = this.node()[name]) && i._;
    return this.each(function() {
      var node = this, args = arguments, o = node[name];
      if (o) {
        node.removeEventListener(type, o, o.$);
        delete node[name];
      }
      if (listener) {
        node.addEventListener(type, node[name] = l, l.$ = capture);
        l._ = listener;
      }
      function l(e) {
        var o = d3.event;
        d3.event = e;
        args[0] = node.__data__;
        try {
          listener.apply(node, args);
        } finally {
          d3.event = o;
        }
      }
    });
  };
  d3_selectionPrototype.each = function(callback) {
    return d3_selection_each(this, function(node, i, j) {
      callback.call(node, node.__data__, i, j);
    });
  };
  function d3_selection_each(groups, callback) {
    for (var j = 0, m = groups.length; j < m; j++) {
      for (var group = groups[j], i = 0, n = group.length, node; i < n; i++) {
        if (node = group[i]) callback(node, i, j);
      }
    }
    return groups;
  }
  d3_selectionPrototype.call = function(callback) {
    callback.apply(this, (arguments[0] = this, arguments));
    return this;
  };
  d3_selectionPrototype.empty = function() {
    return !this.node();
  };
  d3_selectionPrototype.node = function(callback) {
    for (var j = 0, m = this.length; j < m; j++) {
      for (var group = this[j], i = 0, n = group.length; i < n; i++) {
        var node = group[i];
        if (node) return node;
      }
    }
    return null;
  };
  d3_selectionPrototype.transition = function() {
    var subgroups = [], subgroup, node;
    for (var j = -1, m = this.length; ++j < m; ) {
      subgroups.push(subgroup = []);
      for (var group = this[j], i = -1, n = group.length; ++i < n; ) {
        subgroup.push((node = group[i]) ? {
          node: node,
          delay: d3_transitionDelay,
          duration: d3_transitionDuration
        } : null);
      }
    }
    return d3_transition(subgroups, d3_transitionId || ++d3_transitionNextId, Date.now());
  };
  var d3_selectionRoot = d3_selection([ [ document ] ]);
  d3_selectionRoot[0].parentNode = d3_selectRoot;
  d3.select = function(selector) {
    return typeof selector === "string" ? d3_selectionRoot.select(selector) : d3_selection([ [ selector ] ]);
  };
  d3.selectAll = function(selector) {
    return typeof selector === "string" ? d3_selectionRoot.selectAll(selector) : d3_selection([ d3_array(selector) ]);
  };
  function d3_selection_enter(selection) {
    d3_arraySubclass(selection, d3_selection_enterPrototype);
    return selection;
  }
  var d3_selection_enterPrototype = [];
  d3.selection.enter = d3_selection_enter;
  d3.selection.enter.prototype = d3_selection_enterPrototype;
  d3_selection_enterPrototype.append = d3_selectionPrototype.append;
  d3_selection_enterPrototype.insert = d3_selectionPrototype.insert;
  d3_selection_enterPrototype.empty = d3_selectionPrototype.empty;
  d3_selection_enterPrototype.node = d3_selectionPrototype.node;
  d3_selection_enterPrototype.select = function(selector) {
    var subgroups = [], subgroup, subnode, upgroup, group, node;
    for (var j = -1, m = this.length; ++j < m; ) {
      upgroup = (group = this[j]).update;
      subgroups.push(subgroup = []);
      subgroup.parentNode = group.parentNode;
      for (var i = -1, n = group.length; ++i < n; ) {
        if (node = group[i]) {
          subgroup.push(upgroup[i] = subnode = selector.call(group.parentNode, node.__data__, i));
          subnode.__data__ = node.__data__;
        } else {
          subgroup.push(null);
        }
      }
    }
    return d3_selection(subgroups);
  };
  function d3_transition(groups, id, time) {
    d3_arraySubclass(groups, d3_transitionPrototype);
    var tweens = new d3_Map, event = d3.dispatch("start", "end"), ease = d3_transitionEase;
    groups.id = id;
    groups.time = time;
    groups.tween = function(name, tween) {
      if (arguments.length < 2) return tweens.get(name);
      if (tween == null) tweens.remove(name); else tweens.set(name, tween);
      return groups;
    };
    groups.ease = function(value) {
      if (!arguments.length) return ease;
      ease = typeof value === "function" ? value : d3.ease.apply(d3, arguments);
      return groups;
    };
    groups.each = function(type, listener) {
      if (arguments.length < 2) return d3_transition_each.call(groups, type);
      event.on(type, listener);
      return groups;
    };
    d3.timer(function(elapsed) {
      return d3_selection_each(groups, function(node, i, j) {
        var tweened = [], delay = node.delay, duration = node.duration, lock = (node = node.node).__transition__ || (node.__transition__ = {
          active: 0,
          count: 0
        }), d = node.__data__;
        ++lock.count;
        delay <= elapsed ? start(elapsed) : d3.timer(start, delay, time);
        function start(elapsed) {
          if (lock.active > id) return stop();
          lock.active = id;
          tweens.forEach(function(key, value) {
            if (value = value.call(node, d, i)) {
              tweened.push(value);
            }
          });
          event.start.call(node, d, i);
          if (!tick(elapsed)) d3.timer(tick, 0, time);
          return 1;
        }
        function tick(elapsed) {
          if (lock.active !== id) return stop();
          var t = (elapsed - delay) / duration, e = ease(t), n = tweened.length;
          while (n > 0) {
            tweened[--n].call(node, e);
          }
          if (t >= 1) {
            stop();
            d3_transitionId = id;
            event.end.call(node, d, i);
            d3_transitionId = 0;
            return 1;
          }
        }
        function stop() {
          if (!--lock.count) delete node.__transition__;
          return 1;
        }
      });
    }, 0, time);
    return groups;
  }
  var d3_transitionRemove = {};
  function d3_transitionNull(d, i, a) {
    return a != "" && d3_transitionRemove;
  }
  function d3_transitionTween(name, b) {
    var interpolate = d3_interpolateByName(name);
    function transitionFunction(d, i, a) {
      var v = b.call(this, d, i);
      return v == null ? a != "" && d3_transitionRemove : a != v && interpolate(a, v);
    }
    function transitionString(d, i, a) {
      return a != b && interpolate(a, b);
    }
    return typeof b === "function" ? transitionFunction : b == null ? d3_transitionNull : (b += "", transitionString);
  }
  var d3_transitionPrototype = [], d3_transitionNextId = 0, d3_transitionId = 0, d3_transitionDefaultDelay = 0, d3_transitionDefaultDuration = 250, d3_transitionDefaultEase = d3.ease("cubic-in-out"), d3_transitionDelay = d3_transitionDefaultDelay, d3_transitionDuration = d3_transitionDefaultDuration, d3_transitionEase = d3_transitionDefaultEase;
  d3_transitionPrototype.call = d3_selectionPrototype.call;
  d3.transition = function(selection) {
    return arguments.length ? d3_transitionId ? selection.transition() : selection : d3_selectionRoot.transition();
  };
  d3.transition.prototype = d3_transitionPrototype;
  d3_transitionPrototype.select = function(selector) {
    var subgroups = [], subgroup, subnode, node;
    if (typeof selector !== "function") selector = d3_selection_selector(selector);
    for (var j = -1, m = this.length; ++j < m; ) {
      subgroups.push(subgroup = []);
      for (var group = this[j], i = -1, n = group.length; ++i < n; ) {
        if ((node = group[i]) && (subnode = selector.call(node.node, node.node.__data__, i))) {
          if ("__data__" in node.node) subnode.__data__ = node.node.__data__;
          subgroup.push({
            node: subnode,
            delay: node.delay,
            duration: node.duration
          });
        } else {
          subgroup.push(null);
        }
      }
    }
    return d3_transition(subgroups, this.id, this.time).ease(this.ease());
  };
  d3_transitionPrototype.selectAll = function(selector) {
    var subgroups = [], subgroup, subnodes, node;
    if (typeof selector !== "function") selector = d3_selection_selectorAll(selector);
    for (var j = -1, m = this.length; ++j < m; ) {
      for (var group = this[j], i = -1, n = group.length; ++i < n; ) {
        if (node = group[i]) {
          subnodes = selector.call(node.node, node.node.__data__, i);
          subgroups.push(subgroup = []);
          for (var k = -1, o = subnodes.length; ++k < o; ) {
            subgroup.push({
              node: subnodes[k],
              delay: node.delay,
              duration: node.duration
            });
          }
        }
      }
    }
    return d3_transition(subgroups, this.id, this.time).ease(this.ease());
  };
  d3_transitionPrototype.filter = function(filter) {
    var subgroups = [], subgroup, group, node;
    if (typeof filter !== "function") filter = d3_selection_filter(filter);
    for (var j = 0, m = this.length; j < m; j++) {
      subgroups.push(subgroup = []);
      for (var group = this[j], i = 0, n = group.length; i < n; i++) {
        if ((node = group[i]) && filter.call(node.node, node.node.__data__, i)) {
          subgroup.push(node);
        }
      }
    }
    return d3_transition(subgroups, this.id, this.time).ease(this.ease());
  };
  d3_transitionPrototype.attr = function(name, value) {
    return this.attrTween(name, d3_transitionTween(name, value));
  };
  d3_transitionPrototype.attrTween = function(nameNS, tween) {
    var name = d3.ns.qualify(nameNS);
    function attrTween(d, i) {
      var f = tween.call(this, d, i, this.getAttribute(name));
      return f === d3_transitionRemove ? (this.removeAttribute(name), null) : f && function(t) {
        this.setAttribute(name, f(t));
      };
    }
    function attrTweenNS(d, i) {
      var f = tween.call(this, d, i, this.getAttributeNS(name.space, name.local));
      return f === d3_transitionRemove ? (this.removeAttributeNS(name.space, name.local), null) : f && function(t) {
        this.setAttributeNS(name.space, name.local, f(t));
      };
    }
    return this.tween("attr." + nameNS, name.local ? attrTweenNS : attrTween);
  };
  d3_transitionPrototype.style = function(name, value, priority) {
    if (arguments.length < 3) priority = "";
    return this.styleTween(name, d3_transitionTween(name, value), priority);
  };
  d3_transitionPrototype.styleTween = function(name, tween, priority) {
    if (arguments.length < 3) priority = "";
    return this.tween("style." + name, function(d, i) {
      var f = tween.call(this, d, i, window.getComputedStyle(this, null).getPropertyValue(name));
      return f === d3_transitionRemove ? (this.style.removeProperty(name), null) : f && function(t) {
        this.style.setProperty(name, f(t), priority);
      };
    });
  };
  d3_transitionPrototype.text = function(value) {
    return this.tween("text", function(d, i) {
      this.textContent = typeof value === "function" ? value.call(this, d, i) : value;
    });
  };
  d3_transitionPrototype.remove = function() {
    return this.each("end.transition", function() {
      var p;
      if (!this.__transition__ && (p = this.parentNode)) p.removeChild(this);
    });
  };
  d3_transitionPrototype.delay = function(value) {
    return d3_selection_each(this, typeof value === "function" ? function(node, i, j) {
      node.delay = value.call(node = node.node, node.__data__, i, j) | 0;
    } : (value = value | 0, function(node) {
      node.delay = value;
    }));
  };
  d3_transitionPrototype.duration = function(value) {
    return d3_selection_each(this, typeof value === "function" ? function(node, i, j) {
      node.duration = Math.max(1, value.call(node = node.node, node.__data__, i, j) | 0);
    } : (value = Math.max(1, value | 0), function(node) {
      node.duration = value;
    }));
  };
  function d3_transition_each(callback) {
    var id = d3_transitionId, ease = d3_transitionEase, delay = d3_transitionDelay, duration = d3_transitionDuration;
    d3_transitionId = this.id;
    d3_transitionEase = this.ease();
    d3_selection_each(this, function(node, i, j) {
      d3_transitionDelay = node.delay;
      d3_transitionDuration = node.duration;
      callback.call(node = node.node, node.__data__, i, j);
    });
    d3_transitionId = id;
    d3_transitionEase = ease;
    d3_transitionDelay = delay;
    d3_transitionDuration = duration;
    return this;
  }
  d3_transitionPrototype.transition = function() {
    return this.select(d3_this);
  };
  var d3_timer_queue = null, d3_timer_interval, d3_timer_timeout;
  d3.timer = function(callback, delay, then) {
    var found = false, t0, t1 = d3_timer_queue;
    if (arguments.length < 3) {
      if (arguments.length < 2) delay = 0; else if (!isFinite(delay)) return;
      then = Date.now();
    }
    while (t1) {
      if (t1.callback === callback) {
        t1.then = then;
        t1.delay = delay;
        found = true;
        break;
      }
      t0 = t1;
      t1 = t1.next;
    }
    if (!found) d3_timer_queue = {
      callback: callback,
      then: then,
      delay: delay,
      next: d3_timer_queue
    };
    if (!d3_timer_interval) {
      d3_timer_timeout = clearTimeout(d3_timer_timeout);
      d3_timer_interval = 1;
      d3_timer_frame(d3_timer_step);
    }
  };
  function d3_timer_step() {
    var elapsed, now = Date.now(), t1 = d3_timer_queue;
    while (t1) {
      elapsed = now - t1.then;
      if (elapsed >= t1.delay) t1.flush = t1.callback(elapsed);
      t1 = t1.next;
    }
    var delay = d3_timer_flush() - now;
    if (delay > 24) {
      if (isFinite(delay)) {
        clearTimeout(d3_timer_timeout);
        d3_timer_timeout = setTimeout(d3_timer_step, delay);
      }
      d3_timer_interval = 0;
    } else {
      d3_timer_interval = 1;
      d3_timer_frame(d3_timer_step);
    }
  }
  d3.timer.flush = function() {
    var elapsed, now = Date.now(), t1 = d3_timer_queue;
    while (t1) {
      elapsed = now - t1.then;
      if (!t1.delay) t1.flush = t1.callback(elapsed);
      t1 = t1.next;
    }
    d3_timer_flush();
  };
  function d3_timer_flush() {
    var t0 = null, t1 = d3_timer_queue, then = Infinity;
    while (t1) {
      if (t1.flush) {
        t1 = t0 ? t0.next = t1.next : d3_timer_queue = t1.next;
      } else {
        then = Math.min(then, t1.then + t1.delay);
        t1 = (t0 = t1).next;
      }
    }
    return then;
  }
  var d3_timer_frame = window.requestAnimationFrame || window.webkitRequestAnimationFrame || window.mozRequestAnimationFrame || window.oRequestAnimationFrame || window.msRequestAnimationFrame || function(callback) {
    setTimeout(callback, 17);
  };
  d3.mouse = function(container) {
    return d3_mousePoint(container, d3_eventSource());
  };
  var d3_mouse_bug44083 = /WebKit/.test(navigator.userAgent) ? -1 : 0;
  function d3_mousePoint(container, e) {
    var svg = container.ownerSVGElement || container;
    if (svg.createSVGPoint) {
      var point = svg.createSVGPoint();
      if (d3_mouse_bug44083 < 0 && (window.scrollX || window.scrollY)) {
        svg = d3.select(document.body).append("svg").style("position", "absolute").style("top", 0).style("left", 0);
        var ctm = svg[0][0].getScreenCTM();
        d3_mouse_bug44083 = !(ctm.f || ctm.e);
        svg.remove();
      }
      if (d3_mouse_bug44083) {
        point.x = e.pageX;
        point.y = e.pageY;
      } else {
        point.x = e.clientX;
        point.y = e.clientY;
      }
      point = point.matrixTransform(container.getScreenCTM().inverse());
      return [ point.x, point.y ];
    }
    var rect = container.getBoundingClientRect();
    return [ e.clientX - rect.left - container.clientLeft, e.clientY - rect.top - container.clientTop ];
  }
  d3.touches = function(container, touches) {
    if (arguments.length < 2) touches = d3_eventSource().touches;
    return touches ? d3_array(touches).map(function(touch) {
      var point = d3_mousePoint(container, touch);
      point.identifier = touch.identifier;
      return point;
    }) : [];
  };
  function d3_noop() {}
  d3.scale = {};
  function d3_scaleExtent(domain) {
    var start = domain[0], stop = domain[domain.length - 1];
    return start < stop ? [ start, stop ] : [ stop, start ];
  }
  function d3_scaleRange(scale) {
    return scale.rangeExtent ? scale.rangeExtent() : d3_scaleExtent(scale.range());
  }
  function d3_scale_nice(domain, nice) {
    var i0 = 0, i1 = domain.length - 1, x0 = domain[i0], x1 = domain[i1], dx;
    if (x1 < x0) {
      dx = i0;
      i0 = i1;
      i1 = dx;
      dx = x0;
      x0 = x1;
      x1 = dx;
    }
    if (dx = x1 - x0) {
      nice = nice(dx);
      domain[i0] = nice.floor(x0);
      domain[i1] = nice.ceil(x1);
    }
    return domain;
  }
  function d3_scale_niceDefault() {
    return Math;
  }
  d3.scale.linear = function() {
    return d3_scale_linear([ 0, 1 ], [ 0, 1 ], d3.interpolate, false);
  };
  function d3_scale_linear(domain, range, interpolate, clamp) {
    var output, input;
    function rescale() {
      var linear = Math.min(domain.length, range.length) > 2 ? d3_scale_polylinear : d3_scale_bilinear, uninterpolate = clamp ? d3_uninterpolateClamp : d3_uninterpolateNumber;
      output = linear(domain, range, uninterpolate, interpolate);
      input = linear(range, domain, uninterpolate, d3.interpolate);
      return scale;
    }
    function scale(x) {
      return output(x);
    }
    scale.invert = function(y) {
      return input(y);
    };
    scale.domain = function(x) {
      if (!arguments.length) return domain;
      domain = x.map(Number);
      return rescale();
    };
    scale.range = function(x) {
      if (!arguments.length) return range;
      range = x;
      return rescale();
    };
    scale.rangeRound = function(x) {
      return scale.range(x).interpolate(d3.interpolateRound);
    };
    scale.clamp = function(x) {
      if (!arguments.length) return clamp;
      clamp = x;
      return rescale();
    };
    scale.interpolate = function(x) {
      if (!arguments.length) return interpolate;
      interpolate = x;
      return rescale();
    };
    scale.ticks = function(m) {
      return d3_scale_linearTicks(domain, m);
    };
    scale.tickFormat = function(m) {
      return d3_scale_linearTickFormat(domain, m);
    };
    scale.nice = function() {
      d3_scale_nice(domain, d3_scale_linearNice);
      return rescale();
    };
    scale.copy = function() {
      return d3_scale_linear(domain, range, interpolate, clamp);
    };
    return rescale();
  }
  function d3_scale_linearRebind(scale, linear) {
    return d3.rebind(scale, linear, "range", "rangeRound", "interpolate", "clamp");
  }
  function d3_scale_linearNice(dx) {
    dx = Math.pow(10, Math.round(Math.log(dx) / Math.LN10) - 1);
    return {
      floor: function(x) {
        return Math.floor(x / dx) * dx;
      },
      ceil: function(x) {
        return Math.ceil(x / dx) * dx;
      }
    };
  }
  function d3_scale_linearTickRange(domain, m) {
    var extent = d3_scaleExtent(domain), span = extent[1] - extent[0], step = Math.pow(10, Math.floor(Math.log(span / m) / Math.LN10)), err = m / span * step;
    if (err <= .15) step *= 10; else if (err <= .35) step *= 5; else if (err <= .75) step *= 2;
    extent[0] = Math.ceil(extent[0] / step) * step;
    extent[1] = Math.floor(extent[1] / step) * step + step * .5;
    extent[2] = step;
    return extent;
  }
  function d3_scale_linearTicks(domain, m) {
    return d3.range.apply(d3, d3_scale_linearTickRange(domain, m));
  }
  function d3_scale_linearTickFormat(domain, m) {
    return d3.format(",." + Math.max(0, -Math.floor(Math.log(d3_scale_linearTickRange(domain, m)[2]) / Math.LN10 + .01)) + "f");
  }
  function d3_scale_bilinear(domain, range, uninterpolate, interpolate) {
    var u = uninterpolate(domain[0], domain[1]), i = interpolate(range[0], range[1]);
    return function(x) {
      return i(u(x));
    };
  }
  function d3_scale_polylinear(domain, range, uninterpolate, interpolate) {
    var u = [], i = [], j = 0, k = Math.min(domain.length, range.length) - 1;
    if (domain[k] < domain[0]) {
      domain = domain.slice().reverse();
      range = range.slice().reverse();
    }
    while (++j <= k) {
      u.push(uninterpolate(domain[j - 1], domain[j]));
      i.push(interpolate(range[j - 1], range[j]));
    }
    return function(x) {
      var j = d3.bisect(domain, x, 1, k) - 1;
      return i[j](u[j](x));
    };
  }
  d3.scale.log = function() {
    return d3_scale_log(d3.scale.linear(), d3_scale_logp);
  };
  function d3_scale_log(linear, log) {
    var pow = log.pow;
    function scale(x) {
      return linear(log(x));
    }
    scale.invert = function(x) {
      return pow(linear.invert(x));
    };
    scale.domain = function(x) {
      if (!arguments.length) return linear.domain().map(pow);
      log = x[0] < 0 ? d3_scale_logn : d3_scale_logp;
      pow = log.pow;
      linear.domain(x.map(log));
      return scale;
    };
    scale.nice = function() {
      linear.domain(d3_scale_nice(linear.domain(), d3_scale_niceDefault));
      return scale;
    };
    scale.ticks = function() {
      var extent = d3_scaleExtent(linear.domain()), ticks = [];
      if (extent.every(isFinite)) {
        var i = Math.floor(extent[0]), j = Math.ceil(extent[1]), u = pow(extent[0]), v = pow(extent[1]);
        if (log === d3_scale_logn) {
          ticks.push(pow(i));
          for (; i++ < j; ) for (var k = 9; k > 0; k--) ticks.push(pow(i) * k);
        } else {
          for (; i < j; i++) for (var k = 1; k < 10; k++) ticks.push(pow(i) * k);
          ticks.push(pow(i));
        }
        for (i = 0; ticks[i] < u; i++) {}
        for (j = ticks.length; ticks[j - 1] > v; j--) {}
        ticks = ticks.slice(i, j);
      }
      return ticks;
    };
    scale.tickFormat = function(n, format) {
      if (arguments.length < 2) format = d3_scale_logFormat;
      if (arguments.length < 1) return format;
      var k = Math.max(.1, n / scale.ticks().length), f = log === d3_scale_logn ? (e = -1e-12, Math.floor) : (e = 1e-12, Math.ceil), e;
      return function(d) {
        return d / pow(f(log(d) + e)) <= k ? format(d) : "";
      };
    };
    scale.copy = function() {
      return d3_scale_log(linear.copy(), log);
    };
    return d3_scale_linearRebind(scale, linear);
  }
  var d3_scale_logFormat = d3.format(".0e");
  function d3_scale_logp(x) {
    return Math.log(x < 0 ? 0 : x) / Math.LN10;
  }
  function d3_scale_logn(x) {
    return -Math.log(x > 0 ? 0 : -x) / Math.LN10;
  }
  d3_scale_logp.pow = function(x) {
    return Math.pow(10, x);
  };
  d3_scale_logn.pow = function(x) {
    return -Math.pow(10, -x);
  };
  d3.scale.pow = function() {
    return d3_scale_pow(d3.scale.linear(), 1);
  };
  function d3_scale_pow(linear, exponent) {
    var powp = d3_scale_powPow(exponent), powb = d3_scale_powPow(1 / exponent);
    function scale(x) {
      return linear(powp(x));
    }
    scale.invert = function(x) {
      return powb(linear.invert(x));
    };
    scale.domain = function(x) {
      if (!arguments.length) return linear.domain().map(powb);
      linear.domain(x.map(powp));
      return scale;
    };
    scale.ticks = function(m) {
      return d3_scale_linearTicks(scale.domain(), m);
    };
    scale.tickFormat = function(m) {
      return d3_scale_linearTickFormat(scale.domain(), m);
    };
    scale.nice = function() {
      return scale.domain(d3_scale_nice(scale.domain(), d3_scale_linearNice));
    };
    scale.exponent = function(x) {
      if (!arguments.length) return exponent;
      var domain = scale.domain();
      powp = d3_scale_powPow(exponent = x);
      powb = d3_scale_powPow(1 / exponent);
      return scale.domain(domain);
    };
    scale.copy = function() {
      return d3_scale_pow(linear.copy(), exponent);
    };
    return d3_scale_linearRebind(scale, linear);
  }
  function d3_scale_powPow(e) {
    return function(x) {
      return x < 0 ? -Math.pow(-x, e) : Math.pow(x, e);
    };
  }
  d3.scale.sqrt = function() {
    return d3.scale.pow().exponent(.5);
  };
  d3.scale.ordinal = function() {
    return d3_scale_ordinal([], {
      t: "range",
      x: []
    });
  };
  function d3_scale_ordinal(domain, ranger) {
    var index, range, rangeBand;
    function scale(x) {
      return range[((index.get(x) || index.set(x, domain.push(x))) - 1) % range.length];
    }
    function steps(start, step) {
      return d3.range(domain.length).map(function(i) {
        return start + step * i;
      });
    }
    scale.domain = function(x) {
      if (!arguments.length) return domain;
      domain = [];
      index = new d3_Map;
      var i = -1, n = x.length, xi;
      while (++i < n) if (!index.has(xi = x[i])) index.set(xi, domain.push(xi));
      return scale[ranger.t](ranger.x, ranger.p);
    };
    scale.range = function(x) {
      if (!arguments.length) return range;
      range = x;
      rangeBand = 0;
      ranger = {
        t: "range",
        x: x
      };
      return scale;
    };
    scale.rangePoints = function(x, padding) {
      if (arguments.length < 2) padding = 0;
      var start = x[0], stop = x[1], step = (stop - start) / (domain.length - 1 + padding);
      range = steps(domain.length < 2 ? (start + stop) / 2 : start + step * padding / 2, step);
      rangeBand = 0;
      ranger = {
        t: "rangePoints",
        x: x,
        p: padding
      };
      return scale;
    };
    scale.rangeBands = function(x, padding) {
      if (arguments.length < 2) padding = 0;
      var reverse = x[1] < x[0], start = x[reverse - 0], stop = x[1 - reverse], step = (stop - start) / (domain.length + padding);
      range = steps(start + step * padding, step);
      if (reverse) range.reverse();
      rangeBand = step * (1 - padding);
      ranger = {
        t: "rangeBands",
        x: x,
        p: padding
      };
      return scale;
    };
    scale.rangeRoundBands = function(x, padding) {
      if (arguments.length < 2) padding = 0;
      var reverse = x[1] < x[0], start = x[reverse - 0], stop = x[1 - reverse], step = Math.floor((stop - start) / (domain.length + padding)), error = stop - start - (domain.length - padding) * step;
      range = steps(start + Math.round(error / 2), step);
      if (reverse) range.reverse();
      rangeBand = Math.round(step * (1 - padding));
      ranger = {
        t: "rangeRoundBands",
        x: x,
        p: padding
      };
      return scale;
    };
    scale.rangeBand = function() {
      return rangeBand;
    };
    scale.rangeExtent = function() {
      return d3_scaleExtent(ranger.x);
    };
    scale.copy = function() {
      return d3_scale_ordinal(domain, ranger);
    };
    return scale.domain(domain);
  }
  d3.scale.category10 = function() {
    return d3.scale.ordinal().range(d3_category10);
  };
  d3.scale.category20 = function() {
    return d3.scale.ordinal().range(d3_category20);
  };
  d3.scale.category20b = function() {
    return d3.scale.ordinal().range(d3_category20b);
  };
  d3.scale.category20c = function() {
    return d3.scale.ordinal().range(d3_category20c);
  };
  var d3_category10 = [ "#1f77b4", "#ff7f0e", "#2ca02c", "#d62728", "#9467bd", "#8c564b", "#e377c2", "#7f7f7f", "#bcbd22", "#17becf" ];
  var d3_category20 = [ "#1f77b4", "#aec7e8", "#ff7f0e", "#ffbb78", "#2ca02c", "#98df8a", "#d62728", "#ff9896", "#9467bd", "#c5b0d5", "#8c564b", "#c49c94", "#e377c2", "#f7b6d2", "#7f7f7f", "#c7c7c7", "#bcbd22", "#dbdb8d", "#17becf", "#9edae5" ];
  var d3_category20b = [ "#393b79", "#5254a3", "#6b6ecf", "#9c9ede", "#637939", "#8ca252", "#b5cf6b", "#cedb9c", "#8c6d31", "#bd9e39", "#e7ba52", "#e7cb94", "#843c39", "#ad494a", "#d6616b", "#e7969c", "#7b4173", "#a55194", "#ce6dbd", "#de9ed6" ];
  var d3_category20c = [ "#3182bd", "#6baed6", "#9ecae1", "#c6dbef", "#e6550d", "#fd8d3c", "#fdae6b", "#fdd0a2", "#31a354", "#74c476", "#a1d99b", "#c7e9c0", "#756bb1", "#9e9ac8", "#bcbddc", "#dadaeb", "#636363", "#969696", "#bdbdbd", "#d9d9d9" ];
  d3.scale.quantile = function() {
    return d3_scale_quantile([], []);
  };
  function d3_scale_quantile(domain, range) {
    var thresholds;
    function rescale() {
      var k = 0, n = domain.length, q = range.length;
      thresholds = [];
      while (++k < q) thresholds[k - 1] = d3.quantile(domain, k / q);
      return scale;
    }
    function scale(x) {
      if (isNaN(x = +x)) return NaN;
      return range[d3.bisect(thresholds, x)];
    }
    scale.domain = function(x) {
      if (!arguments.length) return domain;
      domain = x.filter(function(d) {
        return !isNaN(d);
      }).sort(d3.ascending);
      return rescale();
    };
    scale.range = function(x) {
      if (!arguments.length) return range;
      range = x;
      return rescale();
    };
    scale.quantiles = function() {
      return thresholds;
    };
    scale.copy = function() {
      return d3_scale_quantile(domain, range);
    };
    return rescale();
  }
  d3.scale.quantize = function() {
    return d3_scale_quantize(0, 1, [ 0, 1 ]);
  };
  function d3_scale_quantize(x0, x1, range) {
    var kx, i;
    function scale(x) {
      return range[Math.max(0, Math.min(i, Math.floor(kx * (x - x0))))];
    }
    function rescale() {
      kx = range.length / (x1 - x0);
      i = range.length - 1;
      return scale;
    }
    scale.domain = function(x) {
      if (!arguments.length) return [ x0, x1 ];
      x0 = +x[0];
      x1 = +x[x.length - 1];
      return rescale();
    };
    scale.range = function(x) {
      if (!arguments.length) return range;
      range = x;
      return rescale();
    };
    scale.copy = function() {
      return d3_scale_quantize(x0, x1, range);
    };
    return rescale();
  }
  d3.scale.identity = function() {
    return d3_scale_identity([ 0, 1 ]);
  };
  function d3_scale_identity(domain) {
    function identity(x) {
      return +x;
    }
    identity.invert = identity;
    identity.domain = identity.range = function(x) {
      if (!arguments.length) return domain;
      domain = x.map(identity);
      return identity;
    };
    identity.ticks = function(m) {
      return d3_scale_linearTicks(domain, m);
    };
    identity.tickFormat = function(m) {
      return d3_scale_linearTickFormat(domain, m);
    };
    identity.copy = function() {
      return d3_scale_identity(domain);
    };
    return identity;
  }
  d3.svg = {};
  d3.svg.arc = function() {
    var innerRadius = d3_svg_arcInnerRadius, outerRadius = d3_svg_arcOuterRadius, startAngle = d3_svg_arcStartAngle, endAngle = d3_svg_arcEndAngle;
    function arc() {
      var r0 = innerRadius.apply(this, arguments), r1 = outerRadius.apply(this, arguments), a0 = startAngle.apply(this, arguments) + d3_svg_arcOffset, a1 = endAngle.apply(this, arguments) + d3_svg_arcOffset, da = (a1 < a0 && (da = a0, a0 = a1, a1 = da), a1 - a0), df = da < Math.PI ? "0" : "1", c0 = Math.cos(a0), s0 = Math.sin(a0), c1 = Math.cos(a1), s1 = Math.sin(a1);
      return da >= d3_svg_arcMax ? r0 ? "M0," + r1 + "A" + r1 + "," + r1 + " 0 1,1 0," + -r1 + "A" + r1 + "," + r1 + " 0 1,1 0," + r1 + "M0," + r0 + "A" + r0 + "," + r0 + " 0 1,0 0," + -r0 + "A" + r0 + "," + r0 + " 0 1,0 0," + r0 + "Z" : "M0," + r1 + "A" + r1 + "," + r1 + " 0 1,1 0," + -r1 + "A" + r1 + "," + r1 + " 0 1,1 0," + r1 + "Z" : r0 ? "M" + r1 * c0 + "," + r1 * s0 + "A" + r1 + "," + r1 + " 0 " + df + ",1 " + r1 * c1 + "," + r1 * s1 + "L" + r0 * c1 + "," + r0 * s1 + "A" + r0 + "," + r0 + " 0 " + df + ",0 " + r0 * c0 + "," + r0 * s0 + "Z" : "M" + r1 * c0 + "," + r1 * s0 + "A" + r1 + "," + r1 + " 0 " + df + ",1 " + r1 * c1 + "," + r1 * s1 + "L0,0" + "Z";
    }
    arc.innerRadius = function(v) {
      if (!arguments.length) return innerRadius;
      innerRadius = d3_functor(v);
      return arc;
    };
    arc.outerRadius = function(v) {
      if (!arguments.length) return outerRadius;
      outerRadius = d3_functor(v);
      return arc;
    };
    arc.startAngle = function(v) {
      if (!arguments.length) return startAngle;
      startAngle = d3_functor(v);
      return arc;
    };
    arc.endAngle = function(v) {
      if (!arguments.length) return endAngle;
      endAngle = d3_functor(v);
      return arc;
    };
    arc.centroid = function() {
      var r = (innerRadius.apply(this, arguments) + outerRadius.apply(this, arguments)) / 2, a = (startAngle.apply(this, arguments) + endAngle.apply(this, arguments)) / 2 + d3_svg_arcOffset;
      return [ Math.cos(a) * r, Math.sin(a) * r ];
    };
    return arc;
  };
  var d3_svg_arcOffset = -Math.PI / 2, d3_svg_arcMax = 2 * Math.PI - 1e-6;
  function d3_svg_arcInnerRadius(d) {
    return d.innerRadius;
  }
  function d3_svg_arcOuterRadius(d) {
    return d.outerRadius;
  }
  function d3_svg_arcStartAngle(d) {
    return d.startAngle;
  }
  function d3_svg_arcEndAngle(d) {
    return d.endAngle;
  }
  function d3_svg_line(projection) {
    var x = d3_svg_lineX, y = d3_svg_lineY, defined = d3_true, interpolate = d3_svg_lineInterpolatorDefault, interpolator = d3_svg_lineLinear, tension = .7;
    function line(data) {
      var segments = [], points = [], i = -1, n = data.length, d, fx = d3_functor(x), fy = d3_functor(y);
      function segment() {
        segments.push("M", interpolator(projection(points), tension));
      }
      while (++i < n) {
        if (defined.call(this, d = data[i], i)) {
          points.push([ +fx.call(this, d, i), +fy.call(this, d, i) ]);
        } else if (points.length) {
          segment();
          points = [];
        }
      }
      if (points.length) segment();
      return segments.length ? segments.join("") : null;
    }
    line.x = function(_) {
      if (!arguments.length) return x;
      x = _;
      return line;
    };
    line.y = function(_) {
      if (!arguments.length) return y;
      y = _;
      return line;
    };
    line.defined = function(_) {
      if (!arguments.length) return defined;
      defined = _;
      return line;
    };
    line.interpolate = function(_) {
      if (!arguments.length) return interpolate;
      if (!d3_svg_lineInterpolators.has(_ += "")) _ = d3_svg_lineInterpolatorDefault;
      interpolator = d3_svg_lineInterpolators.get(interpolate = _);
      return line;
    };
    line.tension = function(_) {
      if (!arguments.length) return tension;
      tension = _;
      return line;
    };
    return line;
  }
  d3.svg.line = function() {
    return d3_svg_line(d3_identity);
  };
  function d3_svg_lineX(d) {
    return d[0];
  }
  function d3_svg_lineY(d) {
    return d[1];
  }
  var d3_svg_lineInterpolatorDefault = "linear";
  var d3_svg_lineInterpolators = d3.map({
    linear: d3_svg_lineLinear,
    "linear-closed": d3_svg_lineLinearClosed,
    "step-before": d3_svg_lineStepBefore,
    "step-after": d3_svg_lineStepAfter,
    basis: d3_svg_lineBasis,
    "basis-open": d3_svg_lineBasisOpen,
    "basis-closed": d3_svg_lineBasisClosed,
    bundle: d3_svg_lineBundle,
    cardinal: d3_svg_lineCardinal,
    "cardinal-open": d3_svg_lineCardinalOpen,
    "cardinal-closed": d3_svg_lineCardinalClosed,
    monotone: d3_svg_lineMonotone
  });
  function d3_svg_lineLinear(points) {
    return points.join("L");
  }
  function d3_svg_lineLinearClosed(points) {
    return d3_svg_lineLinear(points) + "Z";
  }
  function d3_svg_lineStepBefore(points) {
    var i = 0, n = points.length, p = points[0], path = [ p[0], ",", p[1] ];
    while (++i < n) path.push("V", (p = points[i])[1], "H", p[0]);
    return path.join("");
  }
  function d3_svg_lineStepAfter(points) {
    var i = 0, n = points.length, p = points[0], path = [ p[0], ",", p[1] ];
    while (++i < n) path.push("H", (p = points[i])[0], "V", p[1]);
    return path.join("");
  }
  function d3_svg_lineCardinalOpen(points, tension) {
    return points.length < 4 ? d3_svg_lineLinear(points) : points[1] + d3_svg_lineHermite(points.slice(1, points.length - 1), d3_svg_lineCardinalTangents(points, tension));
  }
  function d3_svg_lineCardinalClosed(points, tension) {
    return points.length < 3 ? d3_svg_lineLinear(points) : points[0] + d3_svg_lineHermite((points.push(points[0]), points), d3_svg_lineCardinalTangents([ points[points.length - 2] ].concat(points, [ points[1] ]), tension));
  }
  function d3_svg_lineCardinal(points, tension, closed) {
    return points.length < 3 ? d3_svg_lineLinear(points) : points[0] + d3_svg_lineHermite(points, d3_svg_lineCardinalTangents(points, tension));
  }
  function d3_svg_lineHermite(points, tangents) {
    if (tangents.length < 1 || points.length != tangents.length && points.length != tangents.length + 2) {
      return d3_svg_lineLinear(points);
    }
    var quad = points.length != tangents.length, path = "", p0 = points[0], p = points[1], t0 = tangents[0], t = t0, pi = 1;
    if (quad) {
      path += "Q" + (p[0] - t0[0] * 2 / 3) + "," + (p[1] - t0[1] * 2 / 3) + "," + p[0] + "," + p[1];
      p0 = points[1];
      pi = 2;
    }
    if (tangents.length > 1) {
      t = tangents[1];
      p = points[pi];
      pi++;
      path += "C" + (p0[0] + t0[0]) + "," + (p0[1] + t0[1]) + "," + (p[0] - t[0]) + "," + (p[1] - t[1]) + "," + p[0] + "," + p[1];
      for (var i = 2; i < tangents.length; i++, pi++) {
        p = points[pi];
        t = tangents[i];
        path += "S" + (p[0] - t[0]) + "," + (p[1] - t[1]) + "," + p[0] + "," + p[1];
      }
    }
    if (quad) {
      var lp = points[pi];
      path += "Q" + (p[0] + t[0] * 2 / 3) + "," + (p[1] + t[1] * 2 / 3) + "," + lp[0] + "," + lp[1];
    }
    return path;
  }
  function d3_svg_lineCardinalTangents(points, tension) {
    var tangents = [], a = (1 - tension) / 2, p0, p1 = points[0], p2 = points[1], i = 1, n = points.length;
    while (++i < n) {
      p0 = p1;
      p1 = p2;
      p2 = points[i];
      tangents.push([ a * (p2[0] - p0[0]), a * (p2[1] - p0[1]) ]);
    }
    return tangents;
  }
  function d3_svg_lineBasis(points) {
    if (points.length < 3) return d3_svg_lineLinear(points);
    var i = 1, n = points.length, pi = points[0], x0 = pi[0], y0 = pi[1], px = [ x0, x0, x0, (pi = points[1])[0] ], py = [ y0, y0, y0, pi[1] ], path = [ x0, ",", y0 ];
    d3_svg_lineBasisBezier(path, px, py);
    while (++i < n) {
      pi = points[i];
      px.shift();
      px.push(pi[0]);
      py.shift();
      py.push(pi[1]);
      d3_svg_lineBasisBezier(path, px, py);
    }
    i = -1;
    while (++i < 2) {
      px.shift();
      px.push(pi[0]);
      py.shift();
      py.push(pi[1]);
      d3_svg_lineBasisBezier(path, px, py);
    }
    return path.join("");
  }
  function d3_svg_lineBasisOpen(points) {
    if (points.length < 4) return d3_svg_lineLinear(points);
    var path = [], i = -1, n = points.length, pi, px = [ 0 ], py = [ 0 ];
    while (++i < 3) {
      pi = points[i];
      px.push(pi[0]);
      py.push(pi[1]);
    }
    path.push(d3_svg_lineDot4(d3_svg_lineBasisBezier3, px) + "," + d3_svg_lineDot4(d3_svg_lineBasisBezier3, py));
    --i;
    while (++i < n) {
      pi = points[i];
      px.shift();
      px.push(pi[0]);
      py.shift();
      py.push(pi[1]);
      d3_svg_lineBasisBezier(path, px, py);
    }
    return path.join("");
  }
  function d3_svg_lineBasisClosed(points) {
    var path, i = -1, n = points.length, m = n + 4, pi, px = [], py = [];
    while (++i < 4) {
      pi = points[i % n];
      px.push(pi[0]);
      py.push(pi[1]);
    }
    path = [ d3_svg_lineDot4(d3_svg_lineBasisBezier3, px), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, py) ];
    --i;
    while (++i < m) {
      pi = points[i % n];
      px.shift();
      px.push(pi[0]);
      py.shift();
      py.push(pi[1]);
      d3_svg_lineBasisBezier(path, px, py);
    }
    return path.join("");
  }
  function d3_svg_lineBundle(points, tension) {
    var n = points.length - 1;
    if (n) {
      var x0 = points[0][0], y0 = points[0][1], dx = points[n][0] - x0, dy = points[n][1] - y0, i = -1, p, t;
      while (++i <= n) {
        p = points[i];
        t = i / n;
        p[0] = tension * p[0] + (1 - tension) * (x0 + t * dx);
        p[1] = tension * p[1] + (1 - tension) * (y0 + t * dy);
      }
    }
    return d3_svg_lineBasis(points);
  }
  function d3_svg_lineDot4(a, b) {
    return a[0] * b[0] + a[1] * b[1] + a[2] * b[2] + a[3] * b[3];
  }
  var d3_svg_lineBasisBezier1 = [ 0, 2 / 3, 1 / 3, 0 ], d3_svg_lineBasisBezier2 = [ 0, 1 / 3, 2 / 3, 0 ], d3_svg_lineBasisBezier3 = [ 0, 1 / 6, 2 / 3, 1 / 6 ];
  function d3_svg_lineBasisBezier(path, x, y) {
    path.push("C", d3_svg_lineDot4(d3_svg_lineBasisBezier1, x), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier1, y), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier2, x), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier2, y), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, x), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, y));
  }
  function d3_svg_lineSlope(p0, p1) {
    return (p1[1] - p0[1]) / (p1[0] - p0[0]);
  }
  function d3_svg_lineFiniteDifferences(points) {
    var i = 0, j = points.length - 1, m = [], p0 = points[0], p1 = points[1], d = m[0] = d3_svg_lineSlope(p0, p1);
    while (++i < j) {
      m[i] = d + (d = d3_svg_lineSlope(p0 = p1, p1 = points[i + 1]));
    }
    m[i] = d;
    return m;
  }
  function d3_svg_lineMonotoneTangents(points) {
    var tangents = [], d, a, b, s, m = d3_svg_lineFiniteDifferences(points), i = -1, j = points.length - 1;
    while (++i < j) {
      d = d3_svg_lineSlope(points[i], points[i + 1]);
      if (Math.abs(d) < 1e-6) {
        m[i] = m[i + 1] = 0;
      } else {
        a = m[i] / d;
        b = m[i + 1] / d;
        s = a * a + b * b;
        if (s > 9) {
          s = d * 3 / Math.sqrt(s);
          m[i] = s * a;
          m[i + 1] = s * b;
        }
      }
    }
    i = -1;
    while (++i <= j) {
      s = (points[Math.min(j, i + 1)][0] - points[Math.max(0, i - 1)][0]) / (6 * (1 + m[i] * m[i]));
      tangents.push([ s || 0, m[i] * s || 0 ]);
    }
    return tangents;
  }
  function d3_svg_lineMonotone(points) {
    return points.length < 3 ? d3_svg_lineLinear(points) : points[0] + d3_svg_lineHermite(points, d3_svg_lineMonotoneTangents(points));
  }
  d3.svg.line.radial = function() {
    var line = d3_svg_line(d3_svg_lineRadial);
    line.radius = line.x, delete line.x;
    line.angle = line.y, delete line.y;
    return line;
  };
  function d3_svg_lineRadial(points) {
    var point, i = -1, n = points.length, r, a;
    while (++i < n) {
      point = points[i];
      r = point[0];
      a = point[1] + d3_svg_arcOffset;
      point[0] = r * Math.cos(a);
      point[1] = r * Math.sin(a);
    }
    return points;
  }
  function d3_svg_area(projection) {
    var x0 = d3_svg_lineX, x1 = d3_svg_lineX, y0 = 0, y1 = d3_svg_lineY, defined = d3_true, interpolate = d3_svg_lineInterpolatorDefault, i0 = d3_svg_lineLinear, i1 = d3_svg_lineLinear, L = "L", tension = .7;
    function area(data) {
      var segments = [], points0 = [], points1 = [], i = -1, n = data.length, d, fx0 = d3_functor(x0), fy0 = d3_functor(y0), fx1 = x0 === x1 ? function() {
        return x;
      } : d3_functor(x1), fy1 = y0 === y1 ? function() {
        return y;
      } : d3_functor(y1), x, y;
      function segment() {
        segments.push("M", i0(projection(points1), tension), L, i1(projection(points0.reverse()), tension), "Z");
      }
      while (++i < n) {
        if (defined.call(this, d = data[i], i)) {
          points0.push([ x = +fx0.call(this, d, i), y = +fy0.call(this, d, i) ]);
          points1.push([ +fx1.call(this, d, i), +fy1.call(this, d, i) ]);
        } else if (points0.length) {
          segment();
          points0 = [];
          points1 = [];
        }
      }
      if (points0.length) segment();
      return segments.length ? segments.join("") : null;
    }
    area.x = function(_) {
      if (!arguments.length) return x1;
      x0 = x1 = _;
      return area;
    };
    area.x0 = function(_) {
      if (!arguments.length) return x0;
      x0 = _;
      return area;
    };
    area.x1 = function(_) {
      if (!arguments.length) return x1;
      x1 = _;
      return area;
    };
    area.y = function(_) {
      if (!arguments.length) return y1;
      y0 = y1 = _;
      return area;
    };
    area.y0 = function(_) {
      if (!arguments.length) return y0;
      y0 = _;
      return area;
    };
    area.y1 = function(_) {
      if (!arguments.length) return y1;
      y1 = _;
      return area;
    };
    area.defined = function(_) {
      if (!arguments.length) return defined;
      defined = _;
      return area;
    };
    area.interpolate = function(_) {
      if (!arguments.length) return interpolate;
      if (!d3_svg_lineInterpolators.has(_ += "")) _ = d3_svg_lineInterpolatorDefault;
      i0 = d3_svg_lineInterpolators.get(interpolate = _);
      i1 = i0.reverse || i0;
      L = /-closed$/.test(_) ? "M" : "L";
      return area;
    };
    area.tension = function(_) {
      if (!arguments.length) return tension;
      tension = _;
      return area;
    };
    return area;
  }
  d3_svg_lineStepBefore.reverse = d3_svg_lineStepAfter;
  d3_svg_lineStepAfter.reverse = d3_svg_lineStepBefore;
  d3.svg.area = function() {
    return d3_svg_area(Object);
  };
  d3.svg.area.radial = function() {
    var area = d3_svg_area(d3_svg_lineRadial);
    area.radius = area.x, delete area.x;
    area.innerRadius = area.x0, delete area.x0;
    area.outerRadius = area.x1, delete area.x1;
    area.angle = area.y, delete area.y;
    area.startAngle = area.y0, delete area.y0;
    area.endAngle = area.y1, delete area.y1;
    return area;
  };
  d3.svg.chord = function() {
    var source = d3_svg_chordSource, target = d3_svg_chordTarget, radius = d3_svg_chordRadius, startAngle = d3_svg_arcStartAngle, endAngle = d3_svg_arcEndAngle;
    function chord(d, i) {
      var s = subgroup(this, source, d, i), t = subgroup(this, target, d, i);
      return "M" + s.p0 + arc(s.r, s.p1, s.a1 - s.a0) + (equals(s, t) ? curve(s.r, s.p1, s.r, s.p0) : curve(s.r, s.p1, t.r, t.p0) + arc(t.r, t.p1, t.a1 - t.a0) + curve(t.r, t.p1, s.r, s.p0)) + "Z";
    }
    function subgroup(self, f, d, i) {
      var subgroup = f.call(self, d, i), r = radius.call(self, subgroup, i), a0 = startAngle.call(self, subgroup, i) + d3_svg_arcOffset, a1 = endAngle.call(self, subgroup, i) + d3_svg_arcOffset;
      return {
        r: r,
        a0: a0,
        a1: a1,
        p0: [ r * Math.cos(a0), r * Math.sin(a0) ],
        p1: [ r * Math.cos(a1), r * Math.sin(a1) ]
      };
    }
    function equals(a, b) {
      return a.a0 == b.a0 && a.a1 == b.a1;
    }
    function arc(r, p, a) {
      return "A" + r + "," + r + " 0 " + +(a > Math.PI) + ",1 " + p;
    }
    function curve(r0, p0, r1, p1) {
      return "Q 0,0 " + p1;
    }
    chord.radius = function(v) {
      if (!arguments.length) return radius;
      radius = d3_functor(v);
      return chord;
    };
    chord.source = function(v) {
      if (!arguments.length) return source;
      source = d3_functor(v);
      return chord;
    };
    chord.target = function(v) {
      if (!arguments.length) return target;
      target = d3_functor(v);
      return chord;
    };
    chord.startAngle = function(v) {
      if (!arguments.length) return startAngle;
      startAngle = d3_functor(v);
      return chord;
    };
    chord.endAngle = function(v) {
      if (!arguments.length) return endAngle;
      endAngle = d3_functor(v);
      return chord;
    };
    return chord;
  };
  function d3_svg_chordSource(d) {
    return d.source;
  }
  function d3_svg_chordTarget(d) {
    return d.target;
  }
  function d3_svg_chordRadius(d) {
    return d.radius;
  }
  function d3_svg_chordStartAngle(d) {
    return d.startAngle;
  }
  function d3_svg_chordEndAngle(d) {
    return d.endAngle;
  }
  d3.svg.diagonal = function() {
    var source = d3_svg_chordSource, target = d3_svg_chordTarget, projection = d3_svg_diagonalProjection;
    function diagonal(d, i) {
      var p0 = source.call(this, d, i), p3 = target.call(this, d, i), m = (p0.y + p3.y) / 2, p = [ p0, {
        x: p0.x,
        y: m
      }, {
        x: p3.x,
        y: m
      }, p3 ];
      p = p.map(projection);
      return "M" + p[0] + "C" + p[1] + " " + p[2] + " " + p[3];
    }
    diagonal.source = function(x) {
      if (!arguments.length) return source;
      source = d3_functor(x);
      return diagonal;
    };
    diagonal.target = function(x) {
      if (!arguments.length) return target;
      target = d3_functor(x);
      return diagonal;
    };
    diagonal.projection = function(x) {
      if (!arguments.length) return projection;
      projection = x;
      return diagonal;
    };
    return diagonal;
  };
  function d3_svg_diagonalProjection(d) {
    return [ d.x, d.y ];
  }
  d3.svg.diagonal.radial = function() {
    var diagonal = d3.svg.diagonal(), projection = d3_svg_diagonalProjection, projection_ = diagonal.projection;
    diagonal.projection = function(x) {
      return arguments.length ? projection_(d3_svg_diagonalRadialProjection(projection = x)) : projection;
    };
    return diagonal;
  };
  function d3_svg_diagonalRadialProjection(projection) {
    return function() {
      var d = projection.apply(this, arguments), r = d[0], a = d[1] + d3_svg_arcOffset;
      return [ r * Math.cos(a), r * Math.sin(a) ];
    };
  }
  d3.svg.mouse = d3.mouse;
  d3.svg.touches = d3.touches;
  d3.svg.symbol = function() {
    var type = d3_svg_symbolType, size = d3_svg_symbolSize;
    function symbol(d, i) {
      return (d3_svg_symbols.get(type.call(this, d, i)) || d3_svg_symbolCircle)(size.call(this, d, i));
    }
    symbol.type = function(x) {
      if (!arguments.length) return type;
      type = d3_functor(x);
      return symbol;
    };
    symbol.size = function(x) {
      if (!arguments.length) return size;
      size = d3_functor(x);
      return symbol;
    };
    return symbol;
  };
  function d3_svg_symbolSize() {
    return 64;
  }
  function d3_svg_symbolType() {
    return "circle";
  }
  function d3_svg_symbolCircle(size) {
    var r = Math.sqrt(size / Math.PI);
    return "M0," + r + "A" + r + "," + r + " 0 1,1 0," + -r + "A" + r + "," + r + " 0 1,1 0," + r + "Z";
  }
  var d3_svg_symbols = d3.map({
    circle: d3_svg_symbolCircle,
    cross: function(size) {
      var r = Math.sqrt(size / 5) / 2;
      return "M" + -3 * r + "," + -r + "H" + -r + "V" + -3 * r + "H" + r + "V" + -r + "H" + 3 * r + "V" + r + "H" + r + "V" + 3 * r + "H" + -r + "V" + r + "H" + -3 * r + "Z";
    },
    diamond: function(size) {
      var ry = Math.sqrt(size / (2 * d3_svg_symbolTan30)), rx = ry * d3_svg_symbolTan30;
      return "M0," + -ry + "L" + rx + ",0" + " 0," + ry + " " + -rx + ",0" + "Z";
    },
    square: function(size) {
      var r = Math.sqrt(size) / 2;
      return "M" + -r + "," + -r + "L" + r + "," + -r + " " + r + "," + r + " " + -r + "," + r + "Z";
    },
    "triangle-down": function(size) {
      var rx = Math.sqrt(size / d3_svg_symbolSqrt3), ry = rx * d3_svg_symbolSqrt3 / 2;
      return "M0," + ry + "L" + rx + "," + -ry + " " + -rx + "," + -ry + "Z";
    },
    "triangle-up": function(size) {
      var rx = Math.sqrt(size / d3_svg_symbolSqrt3), ry = rx * d3_svg_symbolSqrt3 / 2;
      return "M0," + -ry + "L" + rx + "," + ry + " " + -rx + "," + ry + "Z";
    }
  });
  d3.svg.symbolTypes = d3_svg_symbols.keys();
  var d3_svg_symbolSqrt3 = Math.sqrt(3), d3_svg_symbolTan30 = Math.tan(30 * Math.PI / 180);
  d3.svg.axis = function() {
    var scale = d3.scale.linear(), orient = "bottom", tickMajorSize = 6, tickMinorSize = 6, tickEndSize = 6, tickPadding = 3, tickArguments_ = [ 10 ], tickValues = null, tickFormat_, tickSubdivide = 0;
    function axis(g) {
      g.each(function() {
        var g = d3.select(this);
        var ticks = tickValues == null ? scale.ticks ? scale.ticks.apply(scale, tickArguments_) : scale.domain() : tickValues, tickFormat = tickFormat_ == null ? scale.tickFormat ? scale.tickFormat.apply(scale, tickArguments_) : String : tickFormat_;
        var subticks = d3_svg_axisSubdivide(scale, ticks, tickSubdivide), subtick = g.selectAll(".minor").data(subticks, String), subtickEnter = subtick.enter().insert("line", "g").attr("class", "tick minor").style("opacity", 1e-6), subtickExit = d3.transition(subtick.exit()).style("opacity", 1e-6).remove(), subtickUpdate = d3.transition(subtick).style("opacity", 1);
        var tick = g.selectAll("g").data(ticks, String), tickEnter = tick.enter().insert("g", "path").style("opacity", 1e-6), tickExit = d3.transition(tick.exit()).style("opacity", 1e-6).remove(), tickUpdate = d3.transition(tick).style("opacity", 1), tickTransform;
        var range = d3_scaleRange(scale), path = g.selectAll(".domain").data([ 0 ]), pathEnter = path.enter().append("path").attr("class", "domain"), pathUpdate = d3.transition(path);
        var scale1 = scale.copy(), scale0 = this.__chart__ || scale1;
        this.__chart__ = scale1;
        tickEnter.append("line").attr("class", "tick");
        tickEnter.append("text");
        var lineEnter = tickEnter.select("line"), lineUpdate = tickUpdate.select("line"), text = tick.select("text").text(tickFormat), textEnter = tickEnter.select("text"), textUpdate = tickUpdate.select("text");
        switch (orient) {
         case "bottom":
          {
            tickTransform = d3_svg_axisX;
            subtickEnter.attr("y2", tickMinorSize);
            subtickUpdate.attr("x2", 0).attr("y2", tickMinorSize);
            lineEnter.attr("y2", tickMajorSize);
            textEnter.attr("y", Math.max(tickMajorSize, 0) + tickPadding);
            lineUpdate.attr("x2", 0).attr("y2", tickMajorSize);
            textUpdate.attr("x", 0).attr("y", Math.max(tickMajorSize, 0) + tickPadding);
            text.attr("dy", ".71em").attr("text-anchor", "middle");
            pathUpdate.attr("d", "M" + range[0] + "," + tickEndSize + "V0H" + range[1] + "V" + tickEndSize);
            break;
          }
         case "top":
          {
            tickTransform = d3_svg_axisX;
            subtickEnter.attr("y2", -tickMinorSize);
            subtickUpdate.attr("x2", 0).attr("y2", -tickMinorSize);
            lineEnter.attr("y2", -tickMajorSize);
            textEnter.attr("y", -(Math.max(tickMajorSize, 0) + tickPadding));
            lineUpdate.attr("x2", 0).attr("y2", -tickMajorSize);
            textUpdate.attr("x", 0).attr("y", -(Math.max(tickMajorSize, 0) + tickPadding));
            text.attr("dy", "0em").attr("text-anchor", "middle");
            pathUpdate.attr("d", "M" + range[0] + "," + -tickEndSize + "V0H" + range[1] + "V" + -tickEndSize);
            break;
          }
         case "left":
          {
            tickTransform = d3_svg_axisY;
            subtickEnter.attr("x2", -tickMinorSize);
            subtickUpdate.attr("x2", -tickMinorSize).attr("y2", 0);
            lineEnter.attr("x2", -tickMajorSize);
            textEnter.attr("x", -(Math.max(tickMajorSize, 0) + tickPadding));
            lineUpdate.attr("x2", -tickMajorSize).attr("y2", 0);
            textUpdate.attr("x", -(Math.max(tickMajorSize, 0) + tickPadding)).attr("y", 0);
            text.attr("dy", ".32em").attr("text-anchor", "end");
            pathUpdate.attr("d", "M" + -tickEndSize + "," + range[0] + "H0V" + range[1] + "H" + -tickEndSize);
            break;
          }
         case "right":
          {
            tickTransform = d3_svg_axisY;
            subtickEnter.attr("x2", tickMinorSize);
            subtickUpdate.attr("x2", tickMinorSize).attr("y2", 0);
            lineEnter.attr("x2", tickMajorSize);
            textEnter.attr("x", Math.max(tickMajorSize, 0) + tickPadding);
            lineUpdate.attr("x2", tickMajorSize).attr("y2", 0);
            textUpdate.attr("x", Math.max(tickMajorSize, 0) + tickPadding).attr("y", 0);
            text.attr("dy", ".32em").attr("text-anchor", "start");
            pathUpdate.attr("d", "M" + tickEndSize + "," + range[0] + "H0V" + range[1] + "H" + tickEndSize);
            break;
          }
        }
        if (scale.ticks) {
          tickEnter.call(tickTransform, scale0);
          tickUpdate.call(tickTransform, scale1);
          tickExit.call(tickTransform, scale1);
          subtickEnter.call(tickTransform, scale0);
          subtickUpdate.call(tickTransform, scale1);
          subtickExit.call(tickTransform, scale1);
        } else {
          var dx = scale1.rangeBand() / 2, x = function(d) {
            return scale1(d) + dx;
          };
          tickEnter.call(tickTransform, x);
          tickUpdate.call(tickTransform, x);
        }
      });
    }
    axis.scale = function(x) {
      if (!arguments.length) return scale;
      scale = x;
      return axis;
    };
    axis.orient = function(x) {
      if (!arguments.length) return orient;
      orient = x;
      return axis;
    };
    axis.ticks = function() {
      if (!arguments.length) return tickArguments_;
      tickArguments_ = arguments;
      return axis;
    };
    axis.tickValues = function(x) {
      if (!arguments.length) return tickValues;
      tickValues = x;
      return axis;
    };
    axis.tickFormat = function(x) {
      if (!arguments.length) return tickFormat_;
      tickFormat_ = x;
      return axis;
    };
    axis.tickSize = function(x, y, z) {
      if (!arguments.length) return tickMajorSize;
      var n = arguments.length - 1;
      tickMajorSize = +x;
      tickMinorSize = n > 1 ? +y : tickMajorSize;
      tickEndSize = n > 0 ? +arguments[n] : tickMajorSize;
      return axis;
    };
    axis.tickPadding = function(x) {
      if (!arguments.length) return tickPadding;
      tickPadding = +x;
      return axis;
    };
    axis.tickSubdivide = function(x) {
      if (!arguments.length) return tickSubdivide;
      tickSubdivide = +x;
      return axis;
    };
    return axis;
  };
  function d3_svg_axisX(selection, x) {
    selection.attr("transform", function(d) {
      return "translate(" + x(d) + ",0)";
    });
  }
  function d3_svg_axisY(selection, y) {
    selection.attr("transform", function(d) {
      return "translate(0," + y(d) + ")";
    });
  }
  function d3_svg_axisSubdivide(scale, ticks, m) {
    subticks = [];
    if (m && ticks.length > 1) {
      var extent = d3_scaleExtent(scale.domain()), subticks, i = -1, n = ticks.length, d = (ticks[1] - ticks[0]) / ++m, j, v;
      while (++i < n) {
        for (j = m; --j > 0; ) {
          if ((v = +ticks[i] - j * d) >= extent[0]) {
            subticks.push(v);
          }
        }
      }
      for (--i, j = 0; ++j < m && (v = +ticks[i] + j * d) < extent[1]; ) {
        subticks.push(v);
      }
    }
    return subticks;
  }
  d3.svg.brush = function() {
    var event = d3_eventDispatch(brush, "brushstart", "brush", "brushend"), x = null, y = null, resizes = d3_svg_brushResizes[0], extent = [ [ 0, 0 ], [ 0, 0 ] ], extentDomain;
    function brush(g) {
      g.each(function() {
        var g = d3.select(this), bg = g.selectAll(".background").data([ 0 ]), fg = g.selectAll(".extent").data([ 0 ]), tz = g.selectAll(".resize").data(resizes, String), e;
        g.style("pointer-events", "all").on("mousedown.brush", brushstart).on("touchstart.brush", brushstart);
        bg.enter().append("rect").attr("class", "background").style("visibility", "hidden").style("cursor", "crosshair");
        fg.enter().append("rect").attr("class", "extent").style("cursor", "move");
        tz.enter().append("g").attr("class", function(d) {
          return "resize " + d;
        }).style("cursor", function(d) {
          return d3_svg_brushCursor[d];
        }).append("rect").attr("x", function(d) {
          return /[ew]$/.test(d) ? -3 : null;
        }).attr("y", function(d) {
          return /^[ns]/.test(d) ? -3 : null;
        }).attr("width", 6).attr("height", 6).style("visibility", "hidden");
        tz.style("display", brush.empty() ? "none" : null);
        tz.exit().remove();
        if (x) {
          e = d3_scaleRange(x);
          bg.attr("x", e[0]).attr("width", e[1] - e[0]);
          redrawX(g);
        }
        if (y) {
          e = d3_scaleRange(y);
          bg.attr("y", e[0]).attr("height", e[1] - e[0]);
          redrawY(g);
        }
        redraw(g);
      });
    }
    function redraw(g) {
      g.selectAll(".resize").attr("transform", function(d) {
        return "translate(" + extent[+/e$/.test(d)][0] + "," + extent[+/^s/.test(d)][1] + ")";
      });
    }
    function redrawX(g) {
      g.select(".extent").attr("x", extent[0][0]);
      g.selectAll(".extent,.n>rect,.s>rect").attr("width", extent[1][0] - extent[0][0]);
    }
    function redrawY(g) {
      g.select(".extent").attr("y", extent[0][1]);
      g.selectAll(".extent,.e>rect,.w>rect").attr("height", extent[1][1] - extent[0][1]);
    }
    function brushstart() {
      var target = this, eventTarget = d3.select(d3.event.target), event_ = event.of(target, arguments), g = d3.select(target), resizing = eventTarget.datum(), resizingX = !/^(n|s)$/.test(resizing) && x, resizingY = !/^(e|w)$/.test(resizing) && y, dragging = eventTarget.classed("extent"), center, origin = mouse(), offset;
      var w = d3.select(window).on("mousemove.brush", brushmove).on("mouseup.brush", brushend).on("touchmove.brush", brushmove).on("touchend.brush", brushend).on("keydown.brush", keydown).on("keyup.brush", keyup);
      if (dragging) {
        origin[0] = extent[0][0] - origin[0];
        origin[1] = extent[0][1] - origin[1];
      } else if (resizing) {
        var ex = +/w$/.test(resizing), ey = +/^n/.test(resizing);
        offset = [ extent[1 - ex][0] - origin[0], extent[1 - ey][1] - origin[1] ];
        origin[0] = extent[ex][0];
        origin[1] = extent[ey][1];
      } else if (d3.event.altKey) center = origin.slice();
      g.style("pointer-events", "none").selectAll(".resize").style("display", null);
      d3.select("body").style("cursor", eventTarget.style("cursor"));
      event_({
        type: "brushstart"
      });
      brushmove();
      d3_eventCancel();
      function mouse() {
        var touches = d3.event.changedTouches;
        return touches ? d3.touches(target, touches)[0] : d3.mouse(target);
      }
      function keydown() {
        if (d3.event.keyCode == 32) {
          if (!dragging) {
            center = null;
            origin[0] -= extent[1][0];
            origin[1] -= extent[1][1];
            dragging = 2;
          }
          d3_eventCancel();
        }
      }
      function keyup() {
        if (d3.event.keyCode == 32 && dragging == 2) {
          origin[0] += extent[1][0];
          origin[1] += extent[1][1];
          dragging = 0;
          d3_eventCancel();
        }
      }
      function brushmove() {
        var point = mouse(), moved = false;
        if (offset) {
          point[0] += offset[0];
          point[1] += offset[1];
        }
        if (!dragging) {
          if (d3.event.altKey) {
            if (!center) center = [ (extent[0][0] + extent[1][0]) / 2, (extent[0][1] + extent[1][1]) / 2 ];
            origin[0] = extent[+(point[0] < center[0])][0];
            origin[1] = extent[+(point[1] < center[1])][1];
          } else center = null;
        }
        if (resizingX && move1(point, x, 0)) {
          redrawX(g);
          moved = true;
        }
        if (resizingY && move1(point, y, 1)) {
          redrawY(g);
          moved = true;
        }
        if (moved) {
          redraw(g);
          event_({
            type: "brush",
            mode: dragging ? "move" : "resize"
          });
        }
      }
      function move1(point, scale, i) {
        var range = d3_scaleRange(scale), r0 = range[0], r1 = range[1], position = origin[i], size = extent[1][i] - extent[0][i], min, max;
        if (dragging) {
          r0 -= position;
          r1 -= size + position;
        }
        min = Math.max(r0, Math.min(r1, point[i]));
        if (dragging) {
          max = (min += position) + size;
        } else {
          if (center) position = Math.max(r0, Math.min(r1, 2 * center[i] - min));
          if (position < min) {
            max = min;
            min = position;
          } else {
            max = position;
          }
        }
        if (extent[0][i] !== min || extent[1][i] !== max) {
          extentDomain = null;
          extent[0][i] = min;
          extent[1][i] = max;
          return true;
        }
      }
      function brushend() {
        brushmove();
        g.style("pointer-events", "all").selectAll(".resize").style("display", brush.empty() ? "none" : null);
        d3.select("body").style("cursor", null);
        w.on("mousemove.brush", null).on("mouseup.brush", null).on("touchmove.brush", null).on("touchend.brush", null).on("keydown.brush", null).on("keyup.brush", null);
        event_({
          type: "brushend"
        });
        d3_eventCancel();
      }
    }
    brush.x = function(z) {
      if (!arguments.length) return x;
      x = z;
      resizes = d3_svg_brushResizes[!x << 1 | !y];
      return brush;
    };
    brush.y = function(z) {
      if (!arguments.length) return y;
      y = z;
      resizes = d3_svg_brushResizes[!x << 1 | !y];
      return brush;
    };
    brush.extent = function(z) {
      var x0, x1, y0, y1, t;
      if (!arguments.length) {
        z = extentDomain || extent;
        if (x) {
          x0 = z[0][0], x1 = z[1][0];
          if (!extentDomain) {
            x0 = extent[0][0], x1 = extent[1][0];
            if (x.invert) x0 = x.invert(x0), x1 = x.invert(x1);
            if (x1 < x0) t = x0, x0 = x1, x1 = t;
          }
        }
        if (y) {
          y0 = z[0][1], y1 = z[1][1];
          if (!extentDomain) {
            y0 = extent[0][1], y1 = extent[1][1];
            if (y.invert) y0 = y.invert(y0), y1 = y.invert(y1);
            if (y1 < y0) t = y0, y0 = y1, y1 = t;
          }
        }
        return x && y ? [ [ x0, y0 ], [ x1, y1 ] ] : x ? [ x0, x1 ] : y && [ y0, y1 ];
      }
      extentDomain = [ [ 0, 0 ], [ 0, 0 ] ];
      if (x) {
        x0 = z[0], x1 = z[1];
        if (y) x0 = x0[0], x1 = x1[0];
        extentDomain[0][0] = x0, extentDomain[1][0] = x1;
        if (x.invert) x0 = x(x0), x1 = x(x1);
        if (x1 < x0) t = x0, x0 = x1, x1 = t;
        extent[0][0] = x0 | 0, extent[1][0] = x1 | 0;
      }
      if (y) {
        y0 = z[0], y1 = z[1];
        if (x) y0 = y0[1], y1 = y1[1];
        extentDomain[0][1] = y0, extentDomain[1][1] = y1;
        if (y.invert) y0 = y(y0), y1 = y(y1);
        if (y1 < y0) t = y0, y0 = y1, y1 = t;
        extent[0][1] = y0 | 0, extent[1][1] = y1 | 0;
      }
      return brush;
    };
    brush.clear = function() {
      extentDomain = null;
      extent[0][0] = extent[0][1] = extent[1][0] = extent[1][1] = 0;
      return brush;
    };
    brush.empty = function() {
      return x && extent[0][0] === extent[1][0] || y && extent[0][1] === extent[1][1];
    };
    return d3.rebind(brush, event, "on");
  };
  var d3_svg_brushCursor = {
    n: "ns-resize",
    e: "ew-resize",
    s: "ns-resize",
    w: "ew-resize",
    nw: "nwse-resize",
    ne: "nesw-resize",
    se: "nwse-resize",
    sw: "nesw-resize"
  };
  var d3_svg_brushResizes = [ [ "n", "e", "s", "w", "nw", "ne", "se", "sw" ], [ "e", "w" ], [ "n", "s" ], [] ];
  d3.behavior = {};
  d3.behavior.drag = function() {
    var event = d3_eventDispatch(drag, "drag", "dragstart", "dragend"), origin = null;
    function drag() {
      this.on("mousedown.drag", mousedown).on("touchstart.drag", mousedown);
    }
    function mousedown() {
      var target = this, event_ = event.of(target, arguments), eventTarget = d3.event.target, offset, origin_ = point(), moved = 0;
      var w = d3.select(window).on("mousemove.drag", dragmove).on("touchmove.drag", dragmove).on("mouseup.drag", dragend, true).on("touchend.drag", dragend, true);
      if (origin) {
        offset = origin.apply(target, arguments);
        offset = [ offset.x - origin_[0], offset.y - origin_[1] ];
      } else {
        offset = [ 0, 0 ];
      }
      d3_eventCancel();
      event_({
        type: "dragstart"
      });
      function point() {
        var p = target.parentNode, t = d3.event.changedTouches;
        return t ? d3.touches(p, t)[0] : d3.mouse(p);
      }
      function dragmove() {
        if (!target.parentNode) return dragend();
        var p = point(), dx = p[0] - origin_[0], dy = p[1] - origin_[1];
        moved |= dx | dy;
        origin_ = p;
        d3_eventCancel();
        event_({
          type: "drag",
          x: p[0] + offset[0],
          y: p[1] + offset[1],
          dx: dx,
          dy: dy
        });
      }
      function dragend() {
        event_({
          type: "dragend"
        });
        if (moved) {
          d3_eventCancel();
          if (d3.event.target === eventTarget) w.on("click.drag", click, true);
        }
        w.on("mousemove.drag", null).on("touchmove.drag", null).on("mouseup.drag", null).on("touchend.drag", null);
      }
      function click() {
        d3_eventCancel();
        w.on("click.drag", null);
      }
    }
    drag.origin = function(x) {
      if (!arguments.length) return origin;
      origin = x;
      return drag;
    };
    return d3.rebind(drag, event, "on");
  };
  d3.behavior.zoom = function() {
    var translate = [ 0, 0 ], translate0, scale = 1, scale0, scaleExtent = d3_behavior_zoomInfinity, event = d3_eventDispatch(zoom, "zoom"), x0, x1, y0, y1, touchtime;
    function zoom() {
      this.on("mousedown.zoom", mousedown).on("mousewheel.zoom", mousewheel).on("mousemove.zoom", mousemove).on("DOMMouseScroll.zoom", mousewheel).on("dblclick.zoom", dblclick).on("touchstart.zoom", touchstart).on("touchmove.zoom", touchmove).on("touchend.zoom", touchstart);
    }
    zoom.translate = function(x) {
      if (!arguments.length) return translate;
      translate = x.map(Number);
      return zoom;
    };
    zoom.scale = function(x) {
      if (!arguments.length) return scale;
      scale = +x;
      return zoom;
    };
    zoom.scaleExtent = function(x) {
      if (!arguments.length) return scaleExtent;
      scaleExtent = x == null ? d3_behavior_zoomInfinity : x.map(Number);
      return zoom;
    };
    zoom.x = function(z) {
      if (!arguments.length) return x1;
      x1 = z;
      x0 = z.copy();
      return zoom;
    };
    zoom.y = function(z) {
      if (!arguments.length) return y1;
      y1 = z;
      y0 = z.copy();
      return zoom;
    };
    function location(p) {
      return [ (p[0] - translate[0]) / scale, (p[1] - translate[1]) / scale ];
    }
    function point(l) {
      return [ l[0] * scale + translate[0], l[1] * scale + translate[1] ];
    }
    function scaleTo(s) {
      scale = Math.max(scaleExtent[0], Math.min(scaleExtent[1], s));
    }
    function translateTo(p, l) {
      l = point(l);
      translate[0] += p[0] - l[0];
      translate[1] += p[1] - l[1];
    }
    function dispatch(event) {
      if (x1) x1.domain(x0.range().map(function(x) {
        return (x - translate[0]) / scale;
      }).map(x0.invert));
      if (y1) y1.domain(y0.range().map(function(y) {
        return (y - translate[1]) / scale;
      }).map(y0.invert));
      d3.event.preventDefault();
      event({
        type: "zoom",
        scale: scale,
        translate: translate
      });
    }
    function mousedown() {
      var target = this, event_ = event.of(target, arguments), eventTarget = d3.event.target, moved = 0, w = d3.select(window).on("mousemove.zoom", mousemove).on("mouseup.zoom", mouseup), l = location(d3.mouse(target));
      window.focus();
      d3_eventCancel();
      function mousemove() {
        moved = 1;
        translateTo(d3.mouse(target), l);
        dispatch(event_);
      }
      function mouseup() {
        if (moved) d3_eventCancel();
        w.on("mousemove.zoom", null).on("mouseup.zoom", null);
        if (moved && d3.event.target === eventTarget) w.on("click.zoom", click, true);
      }
      function click() {
        d3_eventCancel();
        w.on("click.zoom", null);
      }
    }
    function mousewheel() {
      if (!translate0) translate0 = location(d3.mouse(this));
      scaleTo(Math.pow(2, d3_behavior_zoomDelta() * .002) * scale);
      translateTo(d3.mouse(this), translate0);
      dispatch(event.of(this, arguments));
    }
    function mousemove() {
      translate0 = null;
    }
    function dblclick() {
      var p = d3.mouse(this), l = location(p);
      scaleTo(d3.event.shiftKey ? scale / 2 : scale * 2);
      translateTo(p, l);
      dispatch(event.of(this, arguments));
    }
    function touchstart() {
      var touches = d3.touches(this), now = Date.now();
      scale0 = scale;
      translate0 = {};
      touches.forEach(function(t) {
        translate0[t.identifier] = location(t);
      });
      d3_eventCancel();
      if (touches.length === 1) {
        if (now - touchtime < 500) {
          var p = touches[0], l = location(touches[0]);
          scaleTo(scale * 2);
          translateTo(p, l);
          dispatch(event.of(this, arguments));
        }
        touchtime = now;
      }
    }
    function touchmove() {
      var touches = d3.touches(this), p0 = touches[0], l0 = translate0[p0.identifier];
      if (p1 = touches[1]) {
        var p1, l1 = translate0[p1.identifier];
        p0 = [ (p0[0] + p1[0]) / 2, (p0[1] + p1[1]) / 2 ];
        l0 = [ (l0[0] + l1[0]) / 2, (l0[1] + l1[1]) / 2 ];
        scaleTo(d3.event.scale * scale0);
      }
      translateTo(p0, l0);
      touchtime = null;
      dispatch(event.of(this, arguments));
    }
    return d3.rebind(zoom, event, "on");
  };
  var d3_behavior_zoomDiv, d3_behavior_zoomInfinity = [ 0, Infinity ];
  function d3_behavior_zoomDelta() {
    if (!d3_behavior_zoomDiv) {
      d3_behavior_zoomDiv = d3.select("body").append("div").style("visibility", "hidden").style("top", 0).style("height", 0).style("width", 0).style("overflow-y", "scroll").append("div").style("height", "2000px").node().parentNode;
    }
    var e = d3.event, delta;
    try {
      d3_behavior_zoomDiv.scrollTop = 1e3;
      d3_behavior_zoomDiv.dispatchEvent(e);
      delta = 1e3 - d3_behavior_zoomDiv.scrollTop;
    } catch (error) {
      delta = e.wheelDelta || -e.detail * 5;
    }
    return delta;
  }
  d3.layout = {};
  d3.layout.bundle = function() {
    return function(links) {
      var paths = [], i = -1, n = links.length;
      while (++i < n) paths.push(d3_layout_bundlePath(links[i]));
      return paths;
    };
  };
  function d3_layout_bundlePath(link) {
    var start = link.source, end = link.target, lca = d3_layout_bundleLeastCommonAncestor(start, end), points = [ start ];
    while (start !== lca) {
      start = start.parent;
      points.push(start);
    }
    var k = points.length;
    while (end !== lca) {
      points.splice(k, 0, end);
      end = end.parent;
    }
    return points;
  }
  function d3_layout_bundleAncestors(node) {
    var ancestors = [], parent = node.parent;
    while (parent != null) {
      ancestors.push(node);
      node = parent;
      parent = parent.parent;
    }
    ancestors.push(node);
    return ancestors;
  }
  function d3_layout_bundleLeastCommonAncestor(a, b) {
    if (a === b) return a;
    var aNodes = d3_layout_bundleAncestors(a), bNodes = d3_layout_bundleAncestors(b), aNode = aNodes.pop(), bNode = bNodes.pop(), sharedNode = null;
    while (aNode === bNode) {
      sharedNode = aNode;
      aNode = aNodes.pop();
      bNode = bNodes.pop();
    }
    return sharedNode;
  }
  d3.layout.chord = function() {
    var chord = {}, chords, groups, matrix, n, padding = 0, sortGroups, sortSubgroups, sortChords;
    function relayout() {
      var subgroups = {}, groupSums = [], groupIndex = d3.range(n), subgroupIndex = [], k, x, x0, i, j;
      chords = [];
      groups = [];
      k = 0, i = -1;
      while (++i < n) {
        x = 0, j = -1;
        while (++j < n) {
          x += matrix[i][j];
        }
        groupSums.push(x);
        subgroupIndex.push(d3.range(n));
        k += x;
      }
      if (sortGroups) {
        groupIndex.sort(function(a, b) {
          return sortGroups(groupSums[a], groupSums[b]);
        });
      }
      if (sortSubgroups) {
        subgroupIndex.forEach(function(d, i) {
          d.sort(function(a, b) {
            return sortSubgroups(matrix[i][a], matrix[i][b]);
          });
        });
      }
      k = (2 * Math.PI - padding * n) / k;
      x = 0, i = -1;
      while (++i < n) {
        x0 = x, j = -1;
        while (++j < n) {
          var di = groupIndex[i], dj = subgroupIndex[di][j], v = matrix[di][dj], a0 = x, a1 = x += v * k;
          subgroups[di + "-" + dj] = {
            index: di,
            subindex: dj,
            startAngle: a0,
            endAngle: a1,
            value: v
          };
        }
        groups[di] = {
          index: di,
          startAngle: x0,
          endAngle: x,
          value: (x - x0) / k
        };
        x += padding;
      }
      i = -1;
      while (++i < n) {
        j = i - 1;
        while (++j < n) {
          var source = subgroups[i + "-" + j], target = subgroups[j + "-" + i];
          if (source.value || target.value) {
            chords.push(source.value < target.value ? {
              source: target,
              target: source
            } : {
              source: source,
              target: target
            });
          }
        }
      }
      if (sortChords) resort();
    }
    function resort() {
      chords.sort(function(a, b) {
        return sortChords((a.source.value + a.target.value) / 2, (b.source.value + b.target.value) / 2);
      });
    }
    chord.matrix = function(x) {
      if (!arguments.length) return matrix;
      n = (matrix = x) && matrix.length;
      chords = groups = null;
      return chord;
    };
    chord.padding = function(x) {
      if (!arguments.length) return padding;
      padding = x;
      chords = groups = null;
      return chord;
    };
    chord.sortGroups = function(x) {
      if (!arguments.length) return sortGroups;
      sortGroups = x;
      chords = groups = null;
      return chord;
    };
    chord.sortSubgroups = function(x) {
      if (!arguments.length) return sortSubgroups;
      sortSubgroups = x;
      chords = null;
      return chord;
    };
    chord.sortChords = function(x) {
      if (!arguments.length) return sortChords;
      sortChords = x;
      if (chords) resort();
      return chord;
    };
    chord.chords = function() {
      if (!chords) relayout();
      return chords;
    };
    chord.groups = function() {
      if (!groups) relayout();
      return groups;
    };
    return chord;
  };
  d3.layout.force = function() {
    var force = {}, event = d3.dispatch("start", "tick", "end"), size = [ 1, 1 ], drag, alpha, friction = .9, linkDistance = d3_layout_forceLinkDistance, linkStrength = d3_layout_forceLinkStrength, charge = -30, gravity = .1, theta = .8, interval, nodes = [], links = [], distances, strengths, charges;
    function repulse(node) {
      return function(quad, x1, y1, x2, y2) {
        if (quad.point !== node) {
          var dx = quad.cx - node.x, dy = quad.cy - node.y, dn = 1 / Math.sqrt(dx * dx + dy * dy);
          if ((x2 - x1) * dn < theta) {
            var k = quad.charge * dn * dn;
            node.px -= dx * k;
            node.py -= dy * k;
            return true;
          }
          if (quad.point && isFinite(dn)) {
            var k = quad.pointCharge * dn * dn;
            node.px -= dx * k;
            node.py -= dy * k;
          }
        }
        return !quad.charge;
      };
    }
    force.tick = function() {
      if ((alpha *= .99) < .005) {
        event.end({
          type: "end",
          alpha: alpha = 0
        });
        return true;
      }
      var n = nodes.length, m = links.length, q, i, o, s, t, l, k, x, y;
      for (i = 0; i < m; ++i) {
        o = links[i];
        s = o.source;
        t = o.target;
        x = t.x - s.x;
        y = t.y - s.y;
        if (l = x * x + y * y) {
          l = alpha * strengths[i] * ((l = Math.sqrt(l)) - distances[i]) / l;
          x *= l;
          y *= l;
          t.x -= x * (k = s.weight / (t.weight + s.weight));
          t.y -= y * k;
          s.x += x * (k = 1 - k);
          s.y += y * k;
        }
      }
      if (k = alpha * gravity) {
        x = size[0] / 2;
        y = size[1] / 2;
        i = -1;
        if (k) while (++i < n) {
          o = nodes[i];
          o.x += (x - o.x) * k;
          o.y += (y - o.y) * k;
        }
      }
      if (charge) {
        d3_layout_forceAccumulate(q = d3.geom.quadtree(nodes), alpha, charges);
        i = -1;
        while (++i < n) {
          if (!(o = nodes[i]).fixed) {
            q.visit(repulse(o));
          }
        }
      }
      i = -1;
      while (++i < n) {
        o = nodes[i];
        if (o.fixed) {
          o.x = o.px;
          o.y = o.py;
        } else {
          o.x -= (o.px - (o.px = o.x)) * friction;
          o.y -= (o.py - (o.py = o.y)) * friction;
        }
      }
      event.tick({
        type: "tick",
        alpha: alpha
      });
    };
    force.nodes = function(x) {
      if (!arguments.length) return nodes;
      nodes = x;
      return force;
    };
    force.links = function(x) {
      if (!arguments.length) return links;
      links = x;
      return force;
    };
    force.size = function(x) {
      if (!arguments.length) return size;
      size = x;
      return force;
    };
    force.linkDistance = function(x) {
      if (!arguments.length) return linkDistance;
      linkDistance = d3_functor(x);
      return force;
    };
    force.distance = force.linkDistance;
    force.linkStrength = function(x) {
      if (!arguments.length) return linkStrength;
      linkStrength = d3_functor(x);
      return force;
    };
    force.friction = function(x) {
      if (!arguments.length) return friction;
      friction = x;
      return force;
    };
    force.charge = function(x) {
      if (!arguments.length) return charge;
      charge = typeof x === "function" ? x : +x;
      return force;
    };
    force.gravity = function(x) {
      if (!arguments.length) return gravity;
      gravity = x;
      return force;
    };
    force.theta = function(x) {
      if (!arguments.length) return theta;
      theta = x;
      return force;
    };
    force.alpha = function(x) {
      if (!arguments.length) return alpha;
      if (alpha) {
        if (x > 0) alpha = x; else alpha = 0;
      } else if (x > 0) {
        event.start({
          type: "start",
          alpha: alpha = x
        });
        d3.timer(force.tick);
      }
      return force;
    };
    force.start = function() {
      var i, j, n = nodes.length, m = links.length, w = size[0], h = size[1], neighbors, o;
      for (i = 0; i < n; ++i) {
        (o = nodes[i]).index = i;
        o.weight = 0;
      }
      distances = [];
      strengths = [];
      for (i = 0; i < m; ++i) {
        o = links[i];
        if (typeof o.source == "number") o.source = nodes[o.source];
        if (typeof o.target == "number") o.target = nodes[o.target];
        distances[i] = linkDistance.call(this, o, i);
        strengths[i] = linkStrength.call(this, o, i);
        ++o.source.weight;
        ++o.target.weight;
      }
      for (i = 0; i < n; ++i) {
        o = nodes[i];
        if (isNaN(o.x)) o.x = position("x", w);
        if (isNaN(o.y)) o.y = position("y", h);
        if (isNaN(o.px)) o.px = o.x;
        if (isNaN(o.py)) o.py = o.y;
      }
      charges = [];
      if (typeof charge === "function") {
        for (i = 0; i < n; ++i) {
          charges[i] = +charge.call(this, nodes[i], i);
        }
      } else {
        for (i = 0; i < n; ++i) {
          charges[i] = charge;
        }
      }
      function position(dimension, size) {
        var neighbors = neighbor(i), j = -1, m = neighbors.length, x;
        while (++j < m) if (!isNaN(x = neighbors[j][dimension])) return x;
        return Math.random() * size;
      }
      function neighbor() {
        if (!neighbors) {
          neighbors = [];
          for (j = 0; j < n; ++j) {
            neighbors[j] = [];
          }
          for (j = 0; j < m; ++j) {
            var o = links[j];
            neighbors[o.source.index].push(o.target);
            neighbors[o.target.index].push(o.source);
          }
        }
        return neighbors[i];
      }
      return force.resume();
    };
    force.resume = function() {
      return force.alpha(.1);
    };
    force.stop = function() {
      return force.alpha(0);
    };
    force.drag = function() {
      if (!drag) drag = d3.behavior.drag().origin(d3_identity).on("dragstart", dragstart).on("drag", d3_layout_forceDrag).on("dragend", d3_layout_forceDragEnd);
      this.on("mouseover.force", d3_layout_forceDragOver).on("mouseout.force", d3_layout_forceDragOut).call(drag);
    };
    function dragstart(d) {
      d3_layout_forceDragOver(d3_layout_forceDragNode = d);
      d3_layout_forceDragForce = force;
    }
    return d3.rebind(force, event, "on");
  };
  var d3_layout_forceDragForce, d3_layout_forceDragNode;
  function d3_layout_forceDragOver(d) {
    d.fixed |= 2;
  }
  function d3_layout_forceDragOut(d) {
    if (d !== d3_layout_forceDragNode) d.fixed &= 1;
  }
  function d3_layout_forceDragEnd() {
    d3_layout_forceDragNode.fixed &= 1;
    d3_layout_forceDragForce = d3_layout_forceDragNode = null;
  }
  function d3_layout_forceDrag() {
    d3_layout_forceDragNode.px = d3.event.x;
    d3_layout_forceDragNode.py = d3.event.y;
    d3_layout_forceDragForce.resume();
  }
  function d3_layout_forceAccumulate(quad, alpha, charges) {
    var cx = 0, cy = 0;
    quad.charge = 0;
    if (!quad.leaf) {
      var nodes = quad.nodes, n = nodes.length, i = -1, c;
      while (++i < n) {
        c = nodes[i];
        if (c == null) continue;
        d3_layout_forceAccumulate(c, alpha, charges);
        quad.charge += c.charge;
        cx += c.charge * c.cx;
        cy += c.charge * c.cy;
      }
    }
    if (quad.point) {
      if (!quad.leaf) {
        quad.point.x += Math.random() - .5;
        quad.point.y += Math.random() - .5;
      }
      var k = alpha * charges[quad.point.index];
      quad.charge += quad.pointCharge = k;
      cx += k * quad.point.x;
      cy += k * quad.point.y;
    }
    quad.cx = cx / quad.charge;
    quad.cy = cy / quad.charge;
  }
  function d3_layout_forceLinkDistance(link) {
    return 20;
  }
  function d3_layout_forceLinkStrength(link) {
    return 1;
  }
  d3.layout.partition = function() {
    var hierarchy = d3.layout.hierarchy(), size = [ 1, 1 ];
    function position(node, x, dx, dy) {
      var children = node.children;
      node.x = x;
      node.y = node.depth * dy;
      node.dx = dx;
      node.dy = dy;
      if (children && (n = children.length)) {
        var i = -1, n, c, d;
        dx = node.value ? dx / node.value : 0;
        while (++i < n) {
          position(c = children[i], x, d = c.value * dx, dy);
          x += d;
        }
      }
    }
    function depth(node) {
      var children = node.children, d = 0;
      if (children && (n = children.length)) {
        var i = -1, n;
        while (++i < n) d = Math.max(d, depth(children[i]));
      }
      return 1 + d;
    }
    function partition(d, i) {
      var nodes = hierarchy.call(this, d, i);
      position(nodes[0], 0, size[0], size[1] / depth(nodes[0]));
      return nodes;
    }
    partition.size = function(x) {
      if (!arguments.length) return size;
      size = x;
      return partition;
    };
    return d3_layout_hierarchyRebind(partition, hierarchy);
  };
  d3.layout.pie = function() {
    var value = Number, sort = d3_layout_pieSortByValue, startAngle = 0, endAngle = 2 * Math.PI;
    function pie(data, i) {
      var values = data.map(function(d, i) {
        return +value.call(pie, d, i);
      });
      var a = +(typeof startAngle === "function" ? startAngle.apply(this, arguments) : startAngle);
      var k = ((typeof endAngle === "function" ? endAngle.apply(this, arguments) : endAngle) - startAngle) / d3.sum(values);
      var index = d3.range(data.length);
      if (sort != null) index.sort(sort === d3_layout_pieSortByValue ? function(i, j) {
        return values[j] - values[i];
      } : function(i, j) {
        return sort(data[i], data[j]);
      });
      var arcs = [];
      index.forEach(function(i) {
        var d;
        arcs[i] = {
          data: data[i],
          value: d = values[i],
          startAngle: a,
          endAngle: a += d * k
        };
      });
      return arcs;
    }
    pie.value = function(x) {
      if (!arguments.length) return value;
      value = x;
      return pie;
    };
    pie.sort = function(x) {
      if (!arguments.length) return sort;
      sort = x;
      return pie;
    };
    pie.startAngle = function(x) {
      if (!arguments.length) return startAngle;
      startAngle = x;
      return pie;
    };
    pie.endAngle = function(x) {
      if (!arguments.length) return endAngle;
      endAngle = x;
      return pie;
    };
    return pie;
  };
  var d3_layout_pieSortByValue = {};
  d3.layout.stack = function() {
    var values = d3_identity, order = d3_layout_stackOrderDefault, offset = d3_layout_stackOffsetZero, out = d3_layout_stackOut, x = d3_layout_stackX, y = d3_layout_stackY;
    function stack(data, index) {
      var series = data.map(function(d, i) {
        return values.call(stack, d, i);
      });
      var points = series.map(function(d, i) {
        return d.map(function(v, i) {
          return [ x.call(stack, v, i), y.call(stack, v, i) ];
        });
      });
      var orders = order.call(stack, points, index);
      series = d3.permute(series, orders);
      points = d3.permute(points, orders);
      var offsets = offset.call(stack, points, index);
      var n = series.length, m = series[0].length, i, j, o;
      for (j = 0; j < m; ++j) {
        out.call(stack, series[0][j], o = offsets[j], points[0][j][1]);
        for (i = 1; i < n; ++i) {
          out.call(stack, series[i][j], o += points[i - 1][j][1], points[i][j][1]);
        }
      }
      return data;
    }
    stack.values = function(x) {
      if (!arguments.length) return values;
      values = x;
      return stack;
    };
    stack.order = function(x) {
      if (!arguments.length) return order;
      order = typeof x === "function" ? x : d3_layout_stackOrders.get(x) || d3_layout_stackOrderDefault;
      return stack;
    };
    stack.offset = function(x) {
      if (!arguments.length) return offset;
      offset = typeof x === "function" ? x : d3_layout_stackOffsets.get(x) || d3_layout_stackOffsetZero;
      return stack;
    };
    stack.x = function(z) {
      if (!arguments.length) return x;
      x = z;
      return stack;
    };
    stack.y = function(z) {
      if (!arguments.length) return y;
      y = z;
      return stack;
    };
    stack.out = function(z) {
      if (!arguments.length) return out;
      out = z;
      return stack;
    };
    return stack;
  };
  function d3_layout_stackX(d) {
    return d.x;
  }
  function d3_layout_stackY(d) {
    return d.y;
  }
  function d3_layout_stackOut(d, y0, y) {
    d.y0 = y0;
    d.y = y;
  }
  var d3_layout_stackOrders = d3.map({
    "inside-out": function(data) {
      var n = data.length, i, j, max = data.map(d3_layout_stackMaxIndex), sums = data.map(d3_layout_stackReduceSum), index = d3.range(n).sort(function(a, b) {
        return max[a] - max[b];
      }), top = 0, bottom = 0, tops = [], bottoms = [];
      for (i = 0; i < n; ++i) {
        j = index[i];
        if (top < bottom) {
          top += sums[j];
          tops.push(j);
        } else {
          bottom += sums[j];
          bottoms.push(j);
        }
      }
      return bottoms.reverse().concat(tops);
    },
    reverse: function(data) {
      return d3.range(data.length).reverse();
    },
    "default": d3_layout_stackOrderDefault
  });
  var d3_layout_stackOffsets = d3.map({
    silhouette: function(data) {
      var n = data.length, m = data[0].length, sums = [], max = 0, i, j, o, y0 = [];
      for (j = 0; j < m; ++j) {
        for (i = 0, o = 0; i < n; i++) o += data[i][j][1];
        if (o > max) max = o;
        sums.push(o);
      }
      for (j = 0; j < m; ++j) {
        y0[j] = (max - sums[j]) / 2;
      }
      return y0;
    },
    wiggle: function(data) {
      var n = data.length, x = data[0], m = x.length, max = 0, i, j, k, s1, s2, s3, dx, o, o0, y0 = [];
      y0[0] = o = o0 = 0;
      for (j = 1; j < m; ++j) {
        for (i = 0, s1 = 0; i < n; ++i) s1 += data[i][j][1];
        for (i = 0, s2 = 0, dx = x[j][0] - x[j - 1][0]; i < n; ++i) {
          for (k = 0, s3 = (data[i][j][1] - data[i][j - 1][1]) / (2 * dx); k < i; ++k) {
            s3 += (data[k][j][1] - data[k][j - 1][1]) / dx;
          }
          s2 += s3 * data[i][j][1];
        }
        y0[j] = o -= s1 ? s2 / s1 * dx : 0;
        if (o < o0) o0 = o;
      }
      for (j = 0; j < m; ++j) y0[j] -= o0;
      return y0;
    },
    expand: function(data) {
      var n = data.length, m = data[0].length, k = 1 / n, i, j, o, y0 = [];
      for (j = 0; j < m; ++j) {
        for (i = 0, o = 0; i < n; i++) o += data[i][j][1];
        if (o) for (i = 0; i < n; i++) data[i][j][1] /= o; else for (i = 0; i < n; i++) data[i][j][1] = k;
      }
      for (j = 0; j < m; ++j) y0[j] = 0;
      return y0;
    },
    zero: d3_layout_stackOffsetZero
  });
  function d3_layout_stackOrderDefault(data) {
    return d3.range(data.length);
  }
  function d3_layout_stackOffsetZero(data) {
    var j = -1, m = data[0].length, y0 = [];
    while (++j < m) y0[j] = 0;
    return y0;
  }
  function d3_layout_stackMaxIndex(array) {
    var i = 1, j = 0, v = array[0][1], k, n = array.length;
    for (; i < n; ++i) {
      if ((k = array[i][1]) > v) {
        j = i;
        v = k;
      }
    }
    return j;
  }
  function d3_layout_stackReduceSum(d) {
    return d.reduce(d3_layout_stackSum, 0);
  }
  function d3_layout_stackSum(p, d) {
    return p + d[1];
  }
  d3.layout.histogram = function() {
    var frequency = true, valuer = Number, ranger = d3_layout_histogramRange, binner = d3_layout_histogramBinSturges;
    function histogram(data, i) {
      var bins = [], values = data.map(valuer, this), range = ranger.call(this, values, i), thresholds = binner.call(this, range, values, i), bin, i = -1, n = values.length, m = thresholds.length - 1, k = frequency ? 1 : 1 / n, x;
      while (++i < m) {
        bin = bins[i] = [];
        bin.dx = thresholds[i + 1] - (bin.x = thresholds[i]);
        bin.y = 0;
      }
      if (m > 0) {
        i = -1;
        while (++i < n) {
          x = values[i];
          if (x >= range[0] && x <= range[1]) {
            bin = bins[d3.bisect(thresholds, x, 1, m) - 1];
            bin.y += k;
            bin.push(data[i]);
          }
        }
      }
      return bins;
    }
    histogram.value = function(x) {
      if (!arguments.length) return valuer;
      valuer = x;
      return histogram;
    };
    histogram.range = function(x) {
      if (!arguments.length) return ranger;
      ranger = d3_functor(x);
      return histogram;
    };
    histogram.bins = function(x) {
      if (!arguments.length) return binner;
      binner = typeof x === "number" ? function(range) {
        return d3_layout_histogramBinFixed(range, x);
      } : d3_functor(x);
      return histogram;
    };
    histogram.frequency = function(x) {
      if (!arguments.length) return frequency;
      frequency = !!x;
      return histogram;
    };
    return histogram;
  };
  function d3_layout_histogramBinSturges(range, values) {
    return d3_layout_histogramBinFixed(range, Math.ceil(Math.log(values.length) / Math.LN2 + 1));
  }
  function d3_layout_histogramBinFixed(range, n) {
    var x = -1, b = +range[0], m = (range[1] - b) / n, f = [];
    while (++x <= n) f[x] = m * x + b;
    return f;
  }
  function d3_layout_histogramRange(values) {
    return [ d3.min(values), d3.max(values) ];
  }
  d3.layout.hierarchy = function() {
    var sort = d3_layout_hierarchySort, children = d3_layout_hierarchyChildren, value = d3_layout_hierarchyValue;
    function recurse(data, depth, nodes) {
      var childs = children.call(hierarchy, data, depth), node = d3_layout_hierarchyInline ? data : {
        data: data
      };
      node.depth = depth;
      nodes.push(node);
      if (childs && (n = childs.length)) {
        var i = -1, n, c = node.children = [], v = 0, j = depth + 1, d;
        while (++i < n) {
          d = recurse(childs[i], j, nodes);
          d.parent = node;
          c.push(d);
          v += d.value;
        }
        if (sort) c.sort(sort);
        if (value) node.value = v;
      } else if (value) {
        node.value = +value.call(hierarchy, data, depth) || 0;
      }
      return node;
    }
    function revalue(node, depth) {
      var children = node.children, v = 0;
      if (children && (n = children.length)) {
        var i = -1, n, j = depth + 1;
        while (++i < n) v += revalue(children[i], j);
      } else if (value) {
        v = +value.call(hierarchy, d3_layout_hierarchyInline ? node : node.data, depth) || 0;
      }
      if (value) node.value = v;
      return v;
    }
    function hierarchy(d) {
      var nodes = [];
      recurse(d, 0, nodes);
      return nodes;
    }
    hierarchy.sort = function(x) {
      if (!arguments.length) return sort;
      sort = x;
      return hierarchy;
    };
    hierarchy.children = function(x) {
      if (!arguments.length) return children;
      children = x;
      return hierarchy;
    };
    hierarchy.value = function(x) {
      if (!arguments.length) return value;
      value = x;
      return hierarchy;
    };
    hierarchy.revalue = function(root) {
      revalue(root, 0);
      return root;
    };
    return hierarchy;
  };
  function d3_layout_hierarchyRebind(object, hierarchy) {
    d3.rebind(object, hierarchy, "sort", "children", "value");
    object.links = d3_layout_hierarchyLinks;
    object.nodes = function(d) {
      d3_layout_hierarchyInline = true;
      return (object.nodes = object)(d);
    };
    return object;
  }
  function d3_layout_hierarchyChildren(d) {
    return d.children;
  }
  function d3_layout_hierarchyValue(d) {
    return d.value;
  }
  function d3_layout_hierarchySort(a, b) {
    return b.value - a.value;
  }
  function d3_layout_hierarchyLinks(nodes) {
    return d3.merge(nodes.map(function(parent) {
      return (parent.children || []).map(function(child) {
        return {
          source: parent,
          target: child
        };
      });
    }));
  }
  var d3_layout_hierarchyInline = false;
  d3.layout.pack = function() {
    var hierarchy = d3.layout.hierarchy().sort(d3_layout_packSort), size = [ 1, 1 ];
    function pack(d, i) {
      var nodes = hierarchy.call(this, d, i), root = nodes[0];
      root.x = 0;
      root.y = 0;
      d3_layout_packTree(root);
      var w = size[0], h = size[1], k = 1 / Math.max(2 * root.r / w, 2 * root.r / h);
      d3_layout_packTransform(root, w / 2, h / 2, k);
      return nodes;
    }
    pack.size = function(x) {
      if (!arguments.length) return size;
      size = x;
      return pack;
    };
    return d3_layout_hierarchyRebind(pack, hierarchy);
  };
  function d3_layout_packSort(a, b) {
    return a.value - b.value;
  }
  function d3_layout_packInsert(a, b) {
    var c = a._pack_next;
    a._pack_next = b;
    b._pack_prev = a;
    b._pack_next = c;
    c._pack_prev = b;
  }
  function d3_layout_packSplice(a, b) {
    a._pack_next = b;
    b._pack_prev = a;
  }
  function d3_layout_packIntersects(a, b) {
    var dx = b.x - a.x, dy = b.y - a.y, dr = a.r + b.r;
    return dr * dr - dx * dx - dy * dy > .001;
  }
  function d3_layout_packCircle(nodes) {
    var xMin = Infinity, xMax = -Infinity, yMin = Infinity, yMax = -Infinity, n = nodes.length, a, b, c, j, k;
    function bound(node) {
      xMin = Math.min(node.x - node.r, xMin);
      xMax = Math.max(node.x + node.r, xMax);
      yMin = Math.min(node.y - node.r, yMin);
      yMax = Math.max(node.y + node.r, yMax);
    }
    nodes.forEach(d3_layout_packLink);
    a = nodes[0];
    a.x = -a.r;
    a.y = 0;
    bound(a);
    if (n > 1) {
      b = nodes[1];
      b.x = b.r;
      b.y = 0;
      bound(b);
      if (n > 2) {
        c = nodes[2];
        d3_layout_packPlace(a, b, c);
        bound(c);
        d3_layout_packInsert(a, c);
        a._pack_prev = c;
        d3_layout_packInsert(c, b);
        b = a._pack_next;
        for (var i = 3; i < n; i++) {
          d3_layout_packPlace(a, b, c = nodes[i]);
          var isect = 0, s1 = 1, s2 = 1;
          for (j = b._pack_next; j !== b; j = j._pack_next, s1++) {
            if (d3_layout_packIntersects(j, c)) {
              isect = 1;
              break;
            }
          }
          if (isect == 1) {
            for (k = a._pack_prev; k !== j._pack_prev; k = k._pack_prev, s2++) {
              if (d3_layout_packIntersects(k, c)) {
                break;
              }
            }
          }
          if (isect) {
            if (s1 < s2 || s1 == s2 && b.r < a.r) d3_layout_packSplice(a, b = j); else d3_layout_packSplice(a = k, b);
            i--;
          } else {
            d3_layout_packInsert(a, c);
            b = c;
            bound(c);
          }
        }
      }
    }
    var cx = (xMin + xMax) / 2, cy = (yMin + yMax) / 2, cr = 0;
    for (var i = 0; i < n; i++) {
      var node = nodes[i];
      node.x -= cx;
      node.y -= cy;
      cr = Math.max(cr, node.r + Math.sqrt(node.x * node.x + node.y * node.y));
    }
    nodes.forEach(d3_layout_packUnlink);
    return cr;
  }
  function d3_layout_packLink(node) {
    node._pack_next = node._pack_prev = node;
  }
  function d3_layout_packUnlink(node) {
    delete node._pack_next;
    delete node._pack_prev;
  }
  function d3_layout_packTree(node) {
    var children = node.children;
    if (children && children.length) {
      children.forEach(d3_layout_packTree);
      node.r = d3_layout_packCircle(children);
    } else {
      node.r = Math.sqrt(node.value);
    }
  }
  function d3_layout_packTransform(node, x, y, k) {
    var children = node.children;
    node.x = x += k * node.x;
    node.y = y += k * node.y;
    node.r *= k;
    if (children) {
      var i = -1, n = children.length;
      while (++i < n) d3_layout_packTransform(children[i], x, y, k);
    }
  }
  function d3_layout_packPlace(a, b, c) {
    var db = a.r + c.r, dx = b.x - a.x, dy = b.y - a.y;
    if (db && (dx || dy)) {
      var da = b.r + c.r, dc = dx * dx + dy * dy;
      da *= da;
      db *= db;
      var x = .5 + (db - da) / (2 * dc), y = Math.sqrt(Math.max(0, 2 * da * (db + dc) - (db -= dc) * db - da * da)) / (2 * dc);
      c.x = a.x + x * dx + y * dy;
      c.y = a.y + x * dy - y * dx;
    } else {
      c.x = a.x + db;
      c.y = a.y;
    }
  }
  d3.layout.cluster = function() {
    var hierarchy = d3.layout.hierarchy().sort(null).value(null), separation = d3_layout_treeSeparation, size = [ 1, 1 ];
    function cluster(d, i) {
      var nodes = hierarchy.call(this, d, i), root = nodes[0], previousNode, x = 0, kx, ky;
      d3_layout_treeVisitAfter(root, function(node) {
        var children = node.children;
        if (children && children.length) {
          node.x = d3_layout_clusterX(children);
          node.y = d3_layout_clusterY(children);
        } else {
          node.x = previousNode ? x += separation(node, previousNode) : 0;
          node.y = 0;
          previousNode = node;
        }
      });
      var left = d3_layout_clusterLeft(root), right = d3_layout_clusterRight(root), x0 = left.x - separation(left, right) / 2, x1 = right.x + separation(right, left) / 2;
      d3_layout_treeVisitAfter(root, function(node) {
        node.x = (node.x - x0) / (x1 - x0) * size[0];
        node.y = (1 - (root.y ? node.y / root.y : 1)) * size[1];
      });
      return nodes;
    }
    cluster.separation = function(x) {
      if (!arguments.length) return separation;
      separation = x;
      return cluster;
    };
    cluster.size = function(x) {
      if (!arguments.length) return size;
      size = x;
      return cluster;
    };
    return d3_layout_hierarchyRebind(cluster, hierarchy);
  };
  function d3_layout_clusterY(children) {
    return 1 + d3.max(children, function(child) {
      return child.y;
    });
  }
  function d3_layout_clusterX(children) {
    return children.reduce(function(x, child) {
      return x + child.x;
    }, 0) / children.length;
  }
  function d3_layout_clusterLeft(node) {
    var children = node.children;
    return children && children.length ? d3_layout_clusterLeft(children[0]) : node;
  }
  function d3_layout_clusterRight(node) {
    var children = node.children, n;
    return children && (n = children.length) ? d3_layout_clusterRight(children[n - 1]) : node;
  }
  d3.layout.tree = function() {
    var hierarchy = d3.layout.hierarchy().sort(null).value(null), separation = d3_layout_treeSeparation, size = [ 1, 1 ];
    function tree(d, i) {
      var nodes = hierarchy.call(this, d, i), root = nodes[0];
      function firstWalk(node, previousSibling) {
        var children = node.children, layout = node._tree;
        if (children && (n = children.length)) {
          var n, firstChild = children[0], previousChild, ancestor = firstChild, child, i = -1;
          while (++i < n) {
            child = children[i];
            firstWalk(child, previousChild);
            ancestor = apportion(child, previousChild, ancestor);
            previousChild = child;
          }
          d3_layout_treeShift(node);
          var midpoint = .5 * (firstChild._tree.prelim + child._tree.prelim);
          if (previousSibling) {
            layout.prelim = previousSibling._tree.prelim + separation(node, previousSibling);
            layout.mod = layout.prelim - midpoint;
          } else {
            layout.prelim = midpoint;
          }
        } else {
          if (previousSibling) {
            layout.prelim = previousSibling._tree.prelim + separation(node, previousSibling);
          }
        }
      }
      function secondWalk(node, x) {
        node.x = node._tree.prelim + x;
        var children = node.children;
        if (children && (n = children.length)) {
          var i = -1, n;
          x += node._tree.mod;
          while (++i < n) {
            secondWalk(children[i], x);
          }
        }
      }
      function apportion(node, previousSibling, ancestor) {
        if (previousSibling) {
          var vip = node, vop = node, vim = previousSibling, vom = node.parent.children[0], sip = vip._tree.mod, sop = vop._tree.mod, sim = vim._tree.mod, som = vom._tree.mod, shift;
          while (vim = d3_layout_treeRight(vim), vip = d3_layout_treeLeft(vip), vim && vip) {
            vom = d3_layout_treeLeft(vom);
            vop = d3_layout_treeRight(vop);
            vop._tree.ancestor = node;
            shift = vim._tree.prelim + sim - vip._tree.prelim - sip + separation(vim, vip);
            if (shift > 0) {
              d3_layout_treeMove(d3_layout_treeAncestor(vim, node, ancestor), node, shift);
              sip += shift;
              sop += shift;
            }
            sim += vim._tree.mod;
            sip += vip._tree.mod;
            som += vom._tree.mod;
            sop += vop._tree.mod;
          }
          if (vim && !d3_layout_treeRight(vop)) {
            vop._tree.thread = vim;
            vop._tree.mod += sim - sop;
          }
          if (vip && !d3_layout_treeLeft(vom)) {
            vom._tree.thread = vip;
            vom._tree.mod += sip - som;
            ancestor = node;
          }
        }
        return ancestor;
      }
      d3_layout_treeVisitAfter(root, function(node, previousSibling) {
        node._tree = {
          ancestor: node,
          prelim: 0,
          mod: 0,
          change: 0,
          shift: 0,
          number: previousSibling ? previousSibling._tree.number + 1 : 0
        };
      });
      firstWalk(root);
      secondWalk(root, -root._tree.prelim);
      var left = d3_layout_treeSearch(root, d3_layout_treeLeftmost), right = d3_layout_treeSearch(root, d3_layout_treeRightmost), deep = d3_layout_treeSearch(root, d3_layout_treeDeepest), x0 = left.x - separation(left, right) / 2, x1 = right.x + separation(right, left) / 2, y1 = deep.depth || 1;
      d3_layout_treeVisitAfter(root, function(node) {
        node.x = (node.x - x0) / (x1 - x0) * size[0];
        node.y = node.depth / y1 * size[1];
        delete node._tree;
      });
      return nodes;
    }
    tree.separation = function(x) {
      if (!arguments.length) return separation;
      separation = x;
      return tree;
    };
    tree.size = function(x) {
      if (!arguments.length) return size;
      size = x;
      return tree;
    };
    return d3_layout_hierarchyRebind(tree, hierarchy);
  };
  function d3_layout_treeSeparation(a, b) {
    return a.parent == b.parent ? 1 : 2;
  }
  function d3_layout_treeLeft(node) {
    var children = node.children;
    return children && children.length ? children[0] : node._tree.thread;
  }
  function d3_layout_treeRight(node) {
    var children = node.children, n;
    return children && (n = children.length) ? children[n - 1] : node._tree.thread;
  }
  function d3_layout_treeSearch(node, compare) {
    var children = node.children;
    if (children && (n = children.length)) {
      var child, n, i = -1;
      while (++i < n) {
        if (compare(child = d3_layout_treeSearch(children[i], compare), node) > 0) {
          node = child;
        }
      }
    }
    return node;
  }
  function d3_layout_treeRightmost(a, b) {
    return a.x - b.x;
  }
  function d3_layout_treeLeftmost(a, b) {
    return b.x - a.x;
  }
  function d3_layout_treeDeepest(a, b) {
    return a.depth - b.depth;
  }
  function d3_layout_treeVisitAfter(node, callback) {
    function visit(node, previousSibling) {
      var children = node.children;
      if (children && (n = children.length)) {
        var child, previousChild = null, i = -1, n;
        while (++i < n) {
          child = children[i];
          visit(child, previousChild);
          previousChild = child;
        }
      }
      callback(node, previousSibling);
    }
    visit(node, null);
  }
  function d3_layout_treeShift(node) {
    var shift = 0, change = 0, children = node.children, i = children.length, child;
    while (--i >= 0) {
      child = children[i]._tree;
      child.prelim += shift;
      child.mod += shift;
      shift += child.shift + (change += child.change);
    }
  }
  function d3_layout_treeMove(ancestor, node, shift) {
    ancestor = ancestor._tree;
    node = node._tree;
    var change = shift / (node.number - ancestor.number);
    ancestor.change += change;
    node.change -= change;
    node.shift += shift;
    node.prelim += shift;
    node.mod += shift;
  }
  function d3_layout_treeAncestor(vim, node, ancestor) {
    return vim._tree.ancestor.parent == node.parent ? vim._tree.ancestor : ancestor;
  }
  d3.layout.treemap = function() {
    var hierarchy = d3.layout.hierarchy(), round = Math.round, size = [ 1, 1 ], padding = null, pad = d3_layout_treemapPadNull, sticky = false, stickies, ratio = .5 * (1 + Math.sqrt(5));
    function scale(children, k) {
      var i = -1, n = children.length, child, area;
      while (++i < n) {
        area = (child = children[i]).value * (k < 0 ? 0 : k);
        child.area = isNaN(area) || area <= 0 ? 0 : area;
      }
    }
    function squarify(node) {
      var children = node.children;
      if (children && children.length) {
        var rect = pad(node), row = [], remaining = children.slice(), child, best = Infinity, score, u = Math.min(rect.dx, rect.dy), n;
        scale(remaining, rect.dx * rect.dy / node.value);
        row.area = 0;
        while ((n = remaining.length) > 0) {
          row.push(child = remaining[n - 1]);
          row.area += child.area;
          if ((score = worst(row, u)) <= best) {
            remaining.pop();
            best = score;
          } else {
            row.area -= row.pop().area;
            position(row, u, rect, false);
            u = Math.min(rect.dx, rect.dy);
            row.length = row.area = 0;
            best = Infinity;
          }
        }
        if (row.length) {
          position(row, u, rect, true);
          row.length = row.area = 0;
        }
        children.forEach(squarify);
      }
    }
    function stickify(node) {
      var children = node.children;
      if (children && children.length) {
        var rect = pad(node), remaining = children.slice(), child, row = [];
        scale(remaining, rect.dx * rect.dy / node.value);
        row.area = 0;
        while (child = remaining.pop()) {
          row.push(child);
          row.area += child.area;
          if (child.z != null) {
            position(row, child.z ? rect.dx : rect.dy, rect, !remaining.length);
            row.length = row.area = 0;
          }
        }
        children.forEach(stickify);
      }
    }
    function worst(row, u) {
      var s = row.area, r, rmax = 0, rmin = Infinity, i = -1, n = row.length;
      while (++i < n) {
        if (!(r = row[i].area)) continue;
        if (r < rmin) rmin = r;
        if (r > rmax) rmax = r;
      }
      s *= s;
      u *= u;
      return s ? Math.max(u * rmax * ratio / s, s / (u * rmin * ratio)) : Infinity;
    }
    function position(row, u, rect, flush) {
      var i = -1, n = row.length, x = rect.x, y = rect.y, v = u ? round(row.area / u) : 0, o;
      if (u == rect.dx) {
        if (flush || v > rect.dy) v = rect.dy;
        while (++i < n) {
          o = row[i];
          o.x = x;
          o.y = y;
          o.dy = v;
          x += o.dx = Math.min(rect.x + rect.dx - x, v ? round(o.area / v) : 0);
        }
        o.z = true;
        o.dx += rect.x + rect.dx - x;
        rect.y += v;
        rect.dy -= v;
      } else {
        if (flush || v > rect.dx) v = rect.dx;
        while (++i < n) {
          o = row[i];
          o.x = x;
          o.y = y;
          o.dx = v;
          y += o.dy = Math.min(rect.y + rect.dy - y, v ? round(o.area / v) : 0);
        }
        o.z = false;
        o.dy += rect.y + rect.dy - y;
        rect.x += v;
        rect.dx -= v;
      }
    }
    function treemap(d) {
      var nodes = stickies || hierarchy(d), root = nodes[0];
      root.x = 0;
      root.y = 0;
      root.dx = size[0];
      root.dy = size[1];
      if (stickies) hierarchy.revalue(root);
      scale([ root ], root.dx * root.dy / root.value);
      (stickies ? stickify : squarify)(root);
      if (sticky) stickies = nodes;
      return nodes;
    }
    treemap.size = function(x) {
      if (!arguments.length) return size;
      size = x;
      return treemap;
    };
    treemap.padding = function(x) {
      if (!arguments.length) return padding;
      function padFunction(node) {
        var p = x.call(treemap, node, node.depth);
        return p == null ? d3_layout_treemapPadNull(node) : d3_layout_treemapPad(node, typeof p === "number" ? [ p, p, p, p ] : p);
      }
      function padConstant(node) {
        return d3_layout_treemapPad(node, x);
      }
      var type;
      pad = (padding = x) == null ? d3_layout_treemapPadNull : (type = typeof x) === "function" ? padFunction : type === "number" ? (x = [ x, x, x, x ], padConstant) : padConstant;
      return treemap;
    };
    treemap.round = function(x) {
      if (!arguments.length) return round != Number;
      round = x ? Math.round : Number;
      return treemap;
    };
    treemap.sticky = function(x) {
      if (!arguments.length) return sticky;
      sticky = x;
      stickies = null;
      return treemap;
    };
    treemap.ratio = function(x) {
      if (!arguments.length) return ratio;
      ratio = x;
      return treemap;
    };
    return d3_layout_hierarchyRebind(treemap, hierarchy);
  };
  function d3_layout_treemapPadNull(node) {
    return {
      x: node.x,
      y: node.y,
      dx: node.dx,
      dy: node.dy
    };
  }
  function d3_layout_treemapPad(node, padding) {
    var x = node.x + padding[3], y = node.y + padding[0], dx = node.dx - padding[1] - padding[3], dy = node.dy - padding[0] - padding[2];
    if (dx < 0) {
      x += dx / 2;
      dx = 0;
    }
    if (dy < 0) {
      y += dy / 2;
      dy = 0;
    }
    return {
      x: x,
      y: y,
      dx: dx,
      dy: dy
    };
  }
  d3.csv = function(url, callback) {
    d3.text(url, "text/csv", function(text) {
      callback(text && d3.csv.parse(text));
    });
  };
  d3.csv.parse = function(text) {
    var header;
    return d3.csv.parseRows(text, function(row, i) {
      if (i) {
        var o = {}, j = -1, m = header.length;
        while (++j < m) o[header[j]] = row[j];
        return o;
      } else {
        header = row;
        return null;
      }
    });
  };
  d3.csv.parseRows = function(text, f) {
    var EOL = {}, EOF = {}, rows = [], re = /\r\n|[,\r\n]/g, n = 0, t, eol;
    re.lastIndex = 0;
    function token() {
      if (re.lastIndex >= text.length) return EOF;
      if (eol) {
        eol = false;
        return EOL;
      }
      var j = re.lastIndex;
      if (text.charCodeAt(j) === 34) {
        var i = j;
        while (i++ < text.length) {
          if (text.charCodeAt(i) === 34) {
            if (text.charCodeAt(i + 1) !== 34) break;
            i++;
          }
        }
        re.lastIndex = i + 2;
        var c = text.charCodeAt(i + 1);
        if (c === 13) {
          eol = true;
          if (text.charCodeAt(i + 2) === 10) re.lastIndex++;
        } else if (c === 10) {
          eol = true;
        }
        return text.substring(j + 1, i).replace(/""/g, '"');
      }
      var m = re.exec(text);
      if (m) {
        eol = m[0].charCodeAt(0) !== 44;
        return text.substring(j, m.index);
      }
      re.lastIndex = text.length;
      return text.substring(j);
    }
    while ((t = token()) !== EOF) {
      var a = [];
      while (t !== EOL && t !== EOF) {
        a.push(t);
        t = token();
      }
      if (f && !(a = f(a, n++))) continue;
      rows.push(a);
    }
    return rows;
  };
  d3.csv.format = function(rows) {
    return rows.map(d3_csv_formatRow).join("\n");
  };
  function d3_csv_formatRow(row) {
    return row.map(d3_csv_formatValue).join(",");
  }
  function d3_csv_formatValue(text) {
    return /[",\n]/.test(text) ? '"' + text.replace(/\"/g, '""') + '"' : text;
  }
  d3.geo = {};
  var d3_geo_radians = Math.PI / 180;
  d3.geo.azimuthal = function() {
    var mode = "orthographic", origin, scale = 200, translate = [ 480, 250 ], x0, y0, cy0, sy0;
    function azimuthal(coordinates) {
      var x1 = coordinates[0] * d3_geo_radians - x0, y1 = coordinates[1] * d3_geo_radians, cx1 = Math.cos(x1), sx1 = Math.sin(x1), cy1 = Math.cos(y1), sy1 = Math.sin(y1), cc = mode !== "orthographic" ? sy0 * sy1 + cy0 * cy1 * cx1 : null, c, k = mode === "stereographic" ? 1 / (1 + cc) : mode === "gnomonic" ? 1 / cc : mode === "equidistant" ? (c = Math.acos(cc), c ? c / Math.sin(c) : 0) : mode === "equalarea" ? Math.sqrt(2 / (1 + cc)) : 1, x = k * cy1 * sx1, y = k * (sy0 * cy1 * cx1 - cy0 * sy1);
      return [ scale * x + translate[0], scale * y + translate[1] ];
    }
    azimuthal.invert = function(coordinates) {
      var x = (coordinates[0] - translate[0]) / scale, y = (coordinates[1] - translate[1]) / scale, p = Math.sqrt(x * x + y * y), c = mode === "stereographic" ? 2 * Math.atan(p) : mode === "gnomonic" ? Math.atan(p) : mode === "equidistant" ? p : mode === "equalarea" ? 2 * Math.asin(.5 * p) : Math.asin(p), sc = Math.sin(c), cc = Math.cos(c);
      return [ (x0 + Math.atan2(x * sc, p * cy0 * cc + y * sy0 * sc)) / d3_geo_radians, Math.asin(cc * sy0 - (p ? y * sc * cy0 / p : 0)) / d3_geo_radians ];
    };
    azimuthal.mode = function(x) {
      if (!arguments.length) return mode;
      mode = x + "";
      return azimuthal;
    };
    azimuthal.origin = function(x) {
      if (!arguments.length) return origin;
      origin = x;
      x0 = origin[0] * d3_geo_radians;
      y0 = origin[1] * d3_geo_radians;
      cy0 = Math.cos(y0);
      sy0 = Math.sin(y0);
      return azimuthal;
    };
    azimuthal.scale = function(x) {
      if (!arguments.length) return scale;
      scale = +x;
      return azimuthal;
    };
    azimuthal.translate = function(x) {
      if (!arguments.length) return translate;
      translate = [ +x[0], +x[1] ];
      return azimuthal;
    };
    return azimuthal.origin([ 0, 0 ]);
  };
  d3.geo.albers = function() {
    var origin = [ -98, 38 ], parallels = [ 29.5, 45.5 ], scale = 1e3, translate = [ 480, 250 ], lng0, n, C, p0;
    function albers(coordinates) {
      var t = n * (d3_geo_radians * coordinates[0] - lng0), p = Math.sqrt(C - 2 * n * Math.sin(d3_geo_radians * coordinates[1])) / n;
      return [ scale * p * Math.sin(t) + translate[0], scale * (p * Math.cos(t) - p0) + translate[1] ];
    }
    albers.invert = function(coordinates) {
      var x = (coordinates[0] - translate[0]) / scale, y = (coordinates[1] - translate[1]) / scale, p0y = p0 + y, t = Math.atan2(x, p0y), p = Math.sqrt(x * x + p0y * p0y);
      return [ (lng0 + t / n) / d3_geo_radians, Math.asin((C - p * p * n * n) / (2 * n)) / d3_geo_radians ];
    };
    function reload() {
      var phi1 = d3_geo_radians * parallels[0], phi2 = d3_geo_radians * parallels[1], lat0 = d3_geo_radians * origin[1], s = Math.sin(phi1), c = Math.cos(phi1);
      lng0 = d3_geo_radians * origin[0];
      n = .5 * (s + Math.sin(phi2));
      C = c * c + 2 * n * s;
      p0 = Math.sqrt(C - 2 * n * Math.sin(lat0)) / n;
      return albers;
    }
    albers.origin = function(x) {
      if (!arguments.length) return origin;
      origin = [ +x[0], +x[1] ];
      return reload();
    };
    albers.parallels = function(x) {
      if (!arguments.length) return parallels;
      parallels = [ +x[0], +x[1] ];
      return reload();
    };
    albers.scale = function(x) {
      if (!arguments.length) return scale;
      scale = +x;
      return albers;
    };
    albers.translate = function(x) {
      if (!arguments.length) return translate;
      translate = [ +x[0], +x[1] ];
      return albers;
    };
    return reload();
  };
  d3.geo.albersUsa = function() {
    var lower48 = d3.geo.albers();
    var alaska = d3.geo.albers().origin([ -160, 60 ]).parallels([ 55, 65 ]);
    var hawaii = d3.geo.albers().origin([ -160, 20 ]).parallels([ 8, 18 ]);
    var puertoRico = d3.geo.albers().origin([ -60, 10 ]).parallels([ 8, 18 ]);
    function albersUsa(coordinates) {
      var lon = coordinates[0], lat = coordinates[1];
      return (lat > 50 ? alaska : lon < -140 ? hawaii : lat < 21 ? puertoRico : lower48)(coordinates);
    }
    albersUsa.scale = function(x) {
      if (!arguments.length) return lower48.scale();
      lower48.scale(x);
      alaska.scale(x * .6);
      hawaii.scale(x);
      puertoRico.scale(x * 1.5);
      return albersUsa.translate(lower48.translate());
    };
    albersUsa.translate = function(x) {
      if (!arguments.length) return lower48.translate();
      var dz = lower48.scale() / 1e3, dx = x[0], dy = x[1];
      lower48.translate(x);
      alaska.translate([ dx - 400 * dz, dy + 170 * dz ]);
      hawaii.translate([ dx - 190 * dz, dy + 200 * dz ]);
      puertoRico.translate([ dx + 580 * dz, dy + 430 * dz ]);
      return albersUsa;
    };
    return albersUsa.scale(lower48.scale());
  };
  d3.geo.bonne = function() {
    var scale = 200, translate = [ 480, 250 ], x0, y0, y1, c1;
    function bonne(coordinates) {
      var x = coordinates[0] * d3_geo_radians - x0, y = coordinates[1] * d3_geo_radians - y0;
      if (y1) {
        var p = c1 + y1 - y, E = x * Math.cos(y) / p;
        x = p * Math.sin(E);
        y = p * Math.cos(E) - c1;
      } else {
        x *= Math.cos(y);
        y *= -1;
      }
      return [ scale * x + translate[0], scale * y + translate[1] ];
    }
    bonne.invert = function(coordinates) {
      var x = (coordinates[0] - translate[0]) / scale, y = (coordinates[1] - translate[1]) / scale;
      if (y1) {
        var c = c1 + y, p = Math.sqrt(x * x + c * c);
        y = c1 + y1 - p;
        x = x0 + p * Math.atan2(x, c) / Math.cos(y);
      } else {
        y *= -1;
        x /= Math.cos(y);
      }
      return [ x / d3_geo_radians, y / d3_geo_radians ];
    };
    bonne.parallel = function(x) {
      if (!arguments.length) return y1 / d3_geo_radians;
      c1 = 1 / Math.tan(y1 = x * d3_geo_radians);
      return bonne;
    };
    bonne.origin = function(x) {
      if (!arguments.length) return [ x0 / d3_geo_radians, y0 / d3_geo_radians ];
      x0 = x[0] * d3_geo_radians;
      y0 = x[1] * d3_geo_radians;
      return bonne;
    };
    bonne.scale = function(x) {
      if (!arguments.length) return scale;
      scale = +x;
      return bonne;
    };
    bonne.translate = function(x) {
      if (!arguments.length) return translate;
      translate = [ +x[0], +x[1] ];
      return bonne;
    };
    return bonne.origin([ 0, 0 ]).parallel(45);
  };
  d3.geo.equirectangular = function() {
    var scale = 500, translate = [ 480, 250 ];
    function equirectangular(coordinates) {
      var x = coordinates[0] / 360, y = -coordinates[1] / 360;
      return [ scale * x + translate[0], scale * y + translate[1] ];
    }
    equirectangular.invert = function(coordinates) {
      var x = (coordinates[0] - translate[0]) / scale, y = (coordinates[1] - translate[1]) / scale;
      return [ 360 * x, -360 * y ];
    };
    equirectangular.scale = function(x) {
      if (!arguments.length) return scale;
      scale = +x;
      return equirectangular;
    };
    equirectangular.translate = function(x) {
      if (!arguments.length) return translate;
      translate = [ +x[0], +x[1] ];
      return equirectangular;
    };
    return equirectangular;
  };
  d3.geo.mercator = function() {
    var scale = 500, translate = [ 480, 250 ];
    function mercator(coordinates) {
      var x = coordinates[0] / 360, y = -(Math.log(Math.tan(Math.PI / 4 + coordinates[1] * d3_geo_radians / 2)) / d3_geo_radians) / 360;
      return [ scale * x + translate[0], scale * Math.max(-.5, Math.min(.5, y)) + translate[1] ];
    }
    mercator.invert = function(coordinates) {
      var x = (coordinates[0] - translate[0]) / scale, y = (coordinates[1] - translate[1]) / scale;
      return [ 360 * x, 2 * Math.atan(Math.exp(-360 * y * d3_geo_radians)) / d3_geo_radians - 90 ];
    };
    mercator.scale = function(x) {
      if (!arguments.length) return scale;
      scale = +x;
      return mercator;
    };
    mercator.translate = function(x) {
      if (!arguments.length) return translate;
      translate = [ +x[0], +x[1] ];
      return mercator;
    };
    return mercator;
  };
  function d3_geo_type(types, defaultValue) {
    return function(object) {
      return object && types.hasOwnProperty(object.type) ? types[object.type](object) : defaultValue;
    };
  }
  d3.geo.path = function() {
    var pointRadius = 4.5, pointCircle = d3_path_circle(pointRadius), projection = d3.geo.albersUsa(), buffer = [];
    function path(d, i) {
      if (typeof pointRadius === "function") pointCircle = d3_path_circle(pointRadius.apply(this, arguments));
      pathType(d);
      var result = buffer.length ? buffer.join("") : null;
      buffer = [];
      return result;
    }
    function project(coordinates) {
      return projection(coordinates).join(",");
    }
    var pathType = d3_geo_type({
      FeatureCollection: function(o) {
        var features = o.features, i = -1, n = features.length;
        while (++i < n) buffer.push(pathType(features[i].geometry));
      },
      Feature: function(o) {
        pathType(o.geometry);
      },
      Point: function(o) {
        buffer.push("M", project(o.coordinates), pointCircle);
      },
      MultiPoint: function(o) {
        var coordinates = o.coordinates, i = -1, n = coordinates.length;
        while (++i < n) buffer.push("M", project(coordinates[i]), pointCircle);
      },
      LineString: function(o) {
        var coordinates = o.coordinates, i = -1, n = coordinates.length;
        buffer.push("M");
        while (++i < n) buffer.push(project(coordinates[i]), "L");
        buffer.pop();
      },
      MultiLineString: function(o) {
        var coordinates = o.coordinates, i = -1, n = coordinates.length, subcoordinates, j, m;
        while (++i < n) {
          subcoordinates = coordinates[i];
          j = -1;
          m = subcoordinates.length;
          buffer.push("M");
          while (++j < m) buffer.push(project(subcoordinates[j]), "L");
          buffer.pop();
        }
      },
      Polygon: function(o) {
        var coordinates = o.coordinates, i = -1, n = coordinates.length, subcoordinates, j, m;
        while (++i < n) {
          subcoordinates = coordinates[i];
          j = -1;
          if ((m = subcoordinates.length - 1) > 0) {
            buffer.push("M");
            while (++j < m) buffer.push(project(subcoordinates[j]), "L");
            buffer[buffer.length - 1] = "Z";
          }
        }
      },
      MultiPolygon: function(o) {
        var coordinates = o.coordinates, i = -1, n = coordinates.length, subcoordinates, j, m, subsubcoordinates, k, p;
        while (++i < n) {
          subcoordinates = coordinates[i];
          j = -1;
          m = subcoordinates.length;
          while (++j < m) {
            subsubcoordinates = subcoordinates[j];
            k = -1;
            if ((p = subsubcoordinates.length - 1) > 0) {
              buffer.push("M");
              while (++k < p) buffer.push(project(subsubcoordinates[k]), "L");
              buffer[buffer.length - 1] = "Z";
            }
          }
        }
      },
      GeometryCollection: function(o) {
        var geometries = o.geometries, i = -1, n = geometries.length;
        while (++i < n) buffer.push(pathType(geometries[i]));
      }
    });
    var areaType = path.area = d3_geo_type({
      FeatureCollection: function(o) {
        var area = 0, features = o.features, i = -1, n = features.length;
        while (++i < n) area += areaType(features[i]);
        return area;
      },
      Feature: function(o) {
        return areaType(o.geometry);
      },
      Polygon: function(o) {
        return polygonArea(o.coordinates);
      },
      MultiPolygon: function(o) {
        var sum = 0, coordinates = o.coordinates, i = -1, n = coordinates.length;
        while (++i < n) sum += polygonArea(coordinates[i]);
        return sum;
      },
      GeometryCollection: function(o) {
        var sum = 0, geometries = o.geometries, i = -1, n = geometries.length;
        while (++i < n) sum += areaType(geometries[i]);
        return sum;
      }
    }, 0);
    function polygonArea(coordinates) {
      var sum = area(coordinates[0]), i = 0, n = coordinates.length;
      while (++i < n) sum -= area(coordinates[i]);
      return sum;
    }
    function polygonCentroid(coordinates) {
      var polygon = d3.geom.polygon(coordinates[0].map(projection)), area = polygon.area(), centroid = polygon.centroid(area < 0 ? (area *= -1, 1) : -1), x = centroid[0], y = centroid[1], z = area, i = 0, n = coordinates.length;
      while (++i < n) {
        polygon = d3.geom.polygon(coordinates[i].map(projection));
        area = polygon.area();
        centroid = polygon.centroid(area < 0 ? (area *= -1, 1) : -1);
        x -= centroid[0];
        y -= centroid[1];
        z -= area;
      }
      return [ x, y, 6 * z ];
    }
    var centroidType = path.centroid = d3_geo_type({
      Feature: function(o) {
        return centroidType(o.geometry);
      },
      Polygon: function(o) {
        var centroid = polygonCentroid(o.coordinates);
        return [ centroid[0] / centroid[2], centroid[1] / centroid[2] ];
      },
      MultiPolygon: function(o) {
        var area = 0, coordinates = o.coordinates, centroid, x = 0, y = 0, z = 0, i = -1, n = coordinates.length;
        while (++i < n) {
          centroid = polygonCentroid(coordinates[i]);
          x += centroid[0];
          y += centroid[1];
          z += centroid[2];
        }
        return [ x / z, y / z ];
      }
    });
    function area(coordinates) {
      return Math.abs(d3.geom.polygon(coordinates.map(projection)).area());
    }
    path.projection = function(x) {
      projection = x;
      return path;
    };
    path.pointRadius = function(x) {
      if (typeof x === "function") pointRadius = x; else {
        pointRadius = +x;
        pointCircle = d3_path_circle(pointRadius);
      }
      return path;
    };
    return path;
  };
  function d3_path_circle(radius) {
    return "m0," + radius + "a" + radius + "," + radius + " 0 1,1 0," + -2 * radius + "a" + radius + "," + radius + " 0 1,1 0," + +2 * radius + "z";
  }
  d3.geo.bounds = function(feature) {
    var left = Infinity, bottom = Infinity, right = -Infinity, top = -Infinity;
    d3_geo_bounds(feature, function(x, y) {
      if (x < left) left = x;
      if (x > right) right = x;
      if (y < bottom) bottom = y;
      if (y > top) top = y;
    });
    return [ [ left, bottom ], [ right, top ] ];
  };
  function d3_geo_bounds(o, f) {
    if (d3_geo_boundsTypes.hasOwnProperty(o.type)) d3_geo_boundsTypes[o.type](o, f);
  }
  var d3_geo_boundsTypes = {
    Feature: d3_geo_boundsFeature,
    FeatureCollection: d3_geo_boundsFeatureCollection,
    GeometryCollection: d3_geo_boundsGeometryCollection,
    LineString: d3_geo_boundsLineString,
    MultiLineString: d3_geo_boundsMultiLineString,
    MultiPoint: d3_geo_boundsLineString,
    MultiPolygon: d3_geo_boundsMultiPolygon,
    Point: d3_geo_boundsPoint,
    Polygon: d3_geo_boundsPolygon
  };
  function d3_geo_boundsFeature(o, f) {
    d3_geo_bounds(o.geometry, f);
  }
  function d3_geo_boundsFeatureCollection(o, f) {
    for (var a = o.features, i = 0, n = a.length; i < n; i++) {
      d3_geo_bounds(a[i].geometry, f);
    }
  }
  function d3_geo_boundsGeometryCollection(o, f) {
    for (var a = o.geometries, i = 0, n = a.length; i < n; i++) {
      d3_geo_bounds(a[i], f);
    }
  }
  function d3_geo_boundsLineString(o, f) {
    for (var a = o.coordinates, i = 0, n = a.length; i < n; i++) {
      f.apply(null, a[i]);
    }
  }
  function d3_geo_boundsMultiLineString(o, f) {
    for (var a = o.coordinates, i = 0, n = a.length; i < n; i++) {
      for (var b = a[i], j = 0, m = b.length; j < m; j++) {
        f.apply(null, b[j]);
      }
    }
  }
  function d3_geo_boundsMultiPolygon(o, f) {
    for (var a = o.coordinates, i = 0, n = a.length; i < n; i++) {
      for (var b = a[i][0], j = 0, m = b.length; j < m; j++) {
        f.apply(null, b[j]);
      }
    }
  }
  function d3_geo_boundsPoint(o, f) {
    f.apply(null, o.coordinates);
  }
  function d3_geo_boundsPolygon(o, f) {
    for (var a = o.coordinates[0], i = 0, n = a.length; i < n; i++) {
      f.apply(null, a[i]);
    }
  }
  d3.geo.circle = function() {
    var origin = [ 0, 0 ], degrees = 90 - .01, radians = degrees * d3_geo_radians, arc = d3.geo.greatArc().source(origin).target(d3_identity);
    function circle() {}
    function visible(point) {
      return arc.distance(point) < radians;
    }
    circle.clip = function(d) {
      if (typeof origin === "function") arc.source(origin.apply(this, arguments));
      return clipType(d) || null;
    };
    var clipType = d3_geo_type({
      FeatureCollection: function(o) {
        var features = o.features.map(clipType).filter(d3_identity);
        return features && (o = Object.create(o), o.features = features, o);
      },
      Feature: function(o) {
        var geometry = clipType(o.geometry);
        return geometry && (o = Object.create(o), o.geometry = geometry, o);
      },
      Point: function(o) {
        return visible(o.coordinates) && o;
      },
      MultiPoint: function(o) {
        var coordinates = o.coordinates.filter(visible);
        return coordinates.length && {
          type: o.type,
          coordinates: coordinates
        };
      },
      LineString: function(o) {
        var coordinates = clip(o.coordinates);
        return coordinates.length && (o = Object.create(o), o.coordinates = coordinates, o);
      },
      MultiLineString: function(o) {
        var coordinates = o.coordinates.map(clip).filter(function(d) {
          return d.length;
        });
        return coordinates.length && (o = Object.create(o), o.coordinates = coordinates, o);
      },
      Polygon: function(o) {
        var coordinates = o.coordinates.map(clip);
        return coordinates[0].length && (o = Object.create(o), o.coordinates = coordinates, o);
      },
      MultiPolygon: function(o) {
        var coordinates = o.coordinates.map(function(d) {
          return d.map(clip);
        }).filter(function(d) {
          return d[0].length;
        });
        return coordinates.length && (o = Object.create(o), o.coordinates = coordinates, o);
      },
      GeometryCollection: function(o) {
        var geometries = o.geometries.map(clipType).filter(d3_identity);
        return geometries.length && (o = Object.create(o), o.geometries = geometries, o);
      }
    });
    function clip(coordinates) {
      var i = -1, n = coordinates.length, clipped = [], p0, p1, p2, d0, d1;
      while (++i < n) {
        d1 = arc.distance(p2 = coordinates[i]);
        if (d1 < radians) {
          if (p1) clipped.push(d3_geo_greatArcInterpolate(p1, p2)((d0 - radians) / (d0 - d1)));
          clipped.push(p2);
          p0 = p1 = null;
        } else {
          p1 = p2;
          if (!p0 && clipped.length) {
            clipped.push(d3_geo_greatArcInterpolate(clipped[clipped.length - 1], p1)((radians - d0) / (d1 - d0)));
            p0 = p1;
          }
        }
        d0 = d1;
      }
      p0 = coordinates[0];
      p1 = clipped[0];
      if (p1 && p2[0] === p0[0] && p2[1] === p0[1] && !(p2[0] === p1[0] && p2[1] === p1[1])) {
        clipped.push(p1);
      }
      return resample(clipped);
    }
    function resample(coordinates) {
      var i = 0, n = coordinates.length, j, m, resampled = n ? [ coordinates[0] ] : coordinates, resamples, origin = arc.source();
      while (++i < n) {
        resamples = arc.source(coordinates[i - 1])(coordinates[i]).coordinates;
        for (j = 0, m = resamples.length; ++j < m; ) resampled.push(resamples[j]);
      }
      arc.source(origin);
      return resampled;
    }
    circle.origin = function(x) {
      if (!arguments.length) return origin;
      origin = x;
      if (typeof origin !== "function") arc.source(origin);
      return circle;
    };
    circle.angle = function(x) {
      if (!arguments.length) return degrees;
      radians = (degrees = +x) * d3_geo_radians;
      return circle;
    };
    return d3.rebind(circle, arc, "precision");
  };
  d3.geo.greatArc = function() {
    var source = d3_geo_greatArcSource, p0, target = d3_geo_greatArcTarget, p1, precision = 6 * d3_geo_radians, interpolate = d3_geo_greatArcInterpolator();
    function greatArc() {
      var d = greatArc.distance.apply(this, arguments), t = 0, dt = precision / d, coordinates = [ p0 ];
      while ((t += dt) < 1) coordinates.push(interpolate(t));
      coordinates.push(p1);
      return {
        type: "LineString",
        coordinates: coordinates
      };
    }
    greatArc.distance = function() {
      if (typeof source === "function") interpolate.source(p0 = source.apply(this, arguments));
      if (typeof target === "function") interpolate.target(p1 = target.apply(this, arguments));
      return interpolate.distance();
    };
    greatArc.source = function(_) {
      if (!arguments.length) return source;
      source = _;
      if (typeof source !== "function") interpolate.source(p0 = source);
      return greatArc;
    };
    greatArc.target = function(_) {
      if (!arguments.length) return target;
      target = _;
      if (typeof target !== "function") interpolate.target(p1 = target);
      return greatArc;
    };
    greatArc.precision = function(_) {
      if (!arguments.length) return precision / d3_geo_radians;
      precision = _ * d3_geo_radians;
      return greatArc;
    };
    return greatArc;
  };
  function d3_geo_greatArcSource(d) {
    return d.source;
  }
  function d3_geo_greatArcTarget(d) {
    return d.target;
  }
  function d3_geo_greatArcInterpolator() {
    var x0, y0, cy0, sy0, kx0, ky0, x1, y1, cy1, sy1, kx1, ky1, d, k;
    function interpolate(t) {
      var B = Math.sin(t *= d) * k, A = Math.sin(d - t) * k, x = A * kx0 + B * kx1, y = A * ky0 + B * ky1, z = A * sy0 + B * sy1;
      return [ Math.atan2(y, x) / d3_geo_radians, Math.atan2(z, Math.sqrt(x * x + y * y)) / d3_geo_radians ];
    }
    interpolate.distance = function() {
      if (d == null) k = 1 / Math.sin(d = Math.acos(Math.max(-1, Math.min(1, sy0 * sy1 + cy0 * cy1 * Math.cos(x1 - x0)))));
      return d;
    };
    interpolate.source = function(_) {
      var cx0 = Math.cos(x0 = _[0] * d3_geo_radians), sx0 = Math.sin(x0);
      cy0 = Math.cos(y0 = _[1] * d3_geo_radians);
      sy0 = Math.sin(y0);
      kx0 = cy0 * cx0;
      ky0 = cy0 * sx0;
      d = null;
      return interpolate;
    };
    interpolate.target = function(_) {
      var cx1 = Math.cos(x1 = _[0] * d3_geo_radians), sx1 = Math.sin(x1);
      cy1 = Math.cos(y1 = _[1] * d3_geo_radians);
      sy1 = Math.sin(y1);
      kx1 = cy1 * cx1;
      ky1 = cy1 * sx1;
      d = null;
      return interpolate;
    };
    return interpolate;
  }
  function d3_geo_greatArcInterpolate(a, b) {
    var i = d3_geo_greatArcInterpolator().source(a).target(b);
    i.distance();
    return i;
  }
  d3.geo.greatCircle = d3.geo.circle;
  d3.geom = {};
  d3.geom.contour = function(grid, start) {
    var s = start || d3_geom_contourStart(grid), c = [], x = s[0], y = s[1], dx = 0, dy = 0, pdx = NaN, pdy = NaN, i = 0;
    do {
      i = 0;
      if (grid(x - 1, y - 1)) i += 1;
      if (grid(x, y - 1)) i += 2;
      if (grid(x - 1, y)) i += 4;
      if (grid(x, y)) i += 8;
      if (i === 6) {
        dx = pdy === -1 ? -1 : 1;
        dy = 0;
      } else if (i === 9) {
        dx = 0;
        dy = pdx === 1 ? -1 : 1;
      } else {
        dx = d3_geom_contourDx[i];
        dy = d3_geom_contourDy[i];
      }
      if (dx != pdx && dy != pdy) {
        c.push([ x, y ]);
        pdx = dx;
        pdy = dy;
      }
      x += dx;
      y += dy;
    } while (s[0] != x || s[1] != y);
    return c;
  };
  var d3_geom_contourDx = [ 1, 0, 1, 1, -1, 0, -1, 1, 0, 0, 0, 0, -1, 0, -1, NaN ], d3_geom_contourDy = [ 0, -1, 0, 0, 0, -1, 0, 0, 1, -1, 1, 1, 0, -1, 0, NaN ];
  function d3_geom_contourStart(grid) {
    var x = 0, y = 0;
    while (true) {
      if (grid(x, y)) {
        return [ x, y ];
      }
      if (x === 0) {
        x = y + 1;
        y = 0;
      } else {
        x = x - 1;
        y = y + 1;
      }
    }
  }
  d3.geom.hull = function(vertices) {
    if (vertices.length < 3) return [];
    var len = vertices.length, plen = len - 1, points = [], stack = [], i, j, h = 0, x1, y1, x2, y2, u, v, a, sp;
    for (i = 1; i < len; ++i) {
      if (vertices[i][1] < vertices[h][1]) {
        h = i;
      } else if (vertices[i][1] == vertices[h][1]) {
        h = vertices[i][0] < vertices[h][0] ? i : h;
      }
    }
    for (i = 0; i < len; ++i) {
      if (i === h) continue;
      y1 = vertices[i][1] - vertices[h][1];
      x1 = vertices[i][0] - vertices[h][0];
      points.push({
        angle: Math.atan2(y1, x1),
        index: i
      });
    }
    points.sort(function(a, b) {
      return a.angle - b.angle;
    });
    a = points[0].angle;
    v = points[0].index;
    u = 0;
    for (i = 1; i < plen; ++i) {
      j = points[i].index;
      if (a == points[i].angle) {
        x1 = vertices[v][0] - vertices[h][0];
        y1 = vertices[v][1] - vertices[h][1];
        x2 = vertices[j][0] - vertices[h][0];
        y2 = vertices[j][1] - vertices[h][1];
        if (x1 * x1 + y1 * y1 >= x2 * x2 + y2 * y2) {
          points[i].index = -1;
        } else {
          points[u].index = -1;
          a = points[i].angle;
          u = i;
          v = j;
        }
      } else {
        a = points[i].angle;
        u = i;
        v = j;
      }
    }
    stack.push(h);
    for (i = 0, j = 0; i < 2; ++j) {
      if (points[j].index !== -1) {
        stack.push(points[j].index);
        i++;
      }
    }
    sp = stack.length;
    for (; j < plen; ++j) {
      if (points[j].index === -1) continue;
      while (!d3_geom_hullCCW(stack[sp - 2], stack[sp - 1], points[j].index, vertices)) {
        --sp;
      }
      stack[sp++] = points[j].index;
    }
    var poly = [];
    for (i = 0; i < sp; ++i) {
      poly.push(vertices[stack[i]]);
    }
    return poly;
  };
  function d3_geom_hullCCW(i1, i2, i3, v) {
    var t, a, b, c, d, e, f;
    t = v[i1];
    a = t[0];
    b = t[1];
    t = v[i2];
    c = t[0];
    d = t[1];
    t = v[i3];
    e = t[0];
    f = t[1];
    return (f - b) * (c - a) - (d - b) * (e - a) > 0;
  }
  d3.geom.polygon = function(coordinates) {
    coordinates.area = function() {
      var i = 0, n = coordinates.length, a = coordinates[n - 1][0] * coordinates[0][1], b = coordinates[n - 1][1] * coordinates[0][0];
      while (++i < n) {
        a += coordinates[i - 1][0] * coordinates[i][1];
        b += coordinates[i - 1][1] * coordinates[i][0];
      }
      return (b - a) * .5;
    };
    coordinates.centroid = function(k) {
      var i = -1, n = coordinates.length, x = 0, y = 0, a, b = coordinates[n - 1], c;
      if (!arguments.length) k = -1 / (6 * coordinates.area());
      while (++i < n) {
        a = b;
        b = coordinates[i];
        c = a[0] * b[1] - b[0] * a[1];
        x += (a[0] + b[0]) * c;
        y += (a[1] + b[1]) * c;
      }
      return [ x * k, y * k ];
    };
    coordinates.clip = function(subject) {
      var input, i = -1, n = coordinates.length, j, m, a = coordinates[n - 1], b, c, d;
      while (++i < n) {
        input = subject.slice();
        subject.length = 0;
        b = coordinates[i];
        c = input[(m = input.length) - 1];
        j = -1;
        while (++j < m) {
          d = input[j];
          if (d3_geom_polygonInside(d, a, b)) {
            if (!d3_geom_polygonInside(c, a, b)) {
              subject.push(d3_geom_polygonIntersect(c, d, a, b));
            }
            subject.push(d);
          } else if (d3_geom_polygonInside(c, a, b)) {
            subject.push(d3_geom_polygonIntersect(c, d, a, b));
          }
          c = d;
        }
        a = b;
      }
      return subject;
    };
    return coordinates;
  };
  function d3_geom_polygonInside(p, a, b) {
    return (b[0] - a[0]) * (p[1] - a[1]) < (b[1] - a[1]) * (p[0] - a[0]);
  }
  function d3_geom_polygonIntersect(c, d, a, b) {
    var x1 = c[0], x2 = d[0], x3 = a[0], x4 = b[0], y1 = c[1], y2 = d[1], y3 = a[1], y4 = b[1], x13 = x1 - x3, x21 = x2 - x1, x43 = x4 - x3, y13 = y1 - y3, y21 = y2 - y1, y43 = y4 - y3, ua = (x43 * y13 - y43 * x13) / (y43 * x21 - x43 * y21);
    return [ x1 + ua * x21, y1 + ua * y21 ];
  }
  d3.geom.voronoi = function(vertices) {
    var polygons = vertices.map(function() {
      return [];
    });
    d3_voronoi_tessellate(vertices, function(e) {
      var s1, s2, x1, x2, y1, y2;
      if (e.a === 1 && e.b >= 0) {
        s1 = e.ep.r;
        s2 = e.ep.l;
      } else {
        s1 = e.ep.l;
        s2 = e.ep.r;
      }
      if (e.a === 1) {
        y1 = s1 ? s1.y : -1e6;
        x1 = e.c - e.b * y1;
        y2 = s2 ? s2.y : 1e6;
        x2 = e.c - e.b * y2;
      } else {
        x1 = s1 ? s1.x : -1e6;
        y1 = e.c - e.a * x1;
        x2 = s2 ? s2.x : 1e6;
        y2 = e.c - e.a * x2;
      }
      var v1 = [ x1, y1 ], v2 = [ x2, y2 ];
      polygons[e.region.l.index].push(v1, v2);
      polygons[e.region.r.index].push(v1, v2);
    });
    return polygons.map(function(polygon, i) {
      var cx = vertices[i][0], cy = vertices[i][1];
      polygon.forEach(function(v) {
        v.angle = Math.atan2(v[0] - cx, v[1] - cy);
      });
      return polygon.sort(function(a, b) {
        return a.angle - b.angle;
      }).filter(function(d, i) {
        return !i || d.angle - polygon[i - 1].angle > 1e-10;
      });
    });
  };
  var d3_voronoi_opposite = {
    l: "r",
    r: "l"
  };
  function d3_voronoi_tessellate(vertices, callback) {
    var Sites = {
      list: vertices.map(function(v, i) {
        return {
          index: i,
          x: v[0],
          y: v[1]
        };
      }).sort(function(a, b) {
        return a.y < b.y ? -1 : a.y > b.y ? 1 : a.x < b.x ? -1 : a.x > b.x ? 1 : 0;
      }),
      bottomSite: null
    };
    var EdgeList = {
      list: [],
      leftEnd: null,
      rightEnd: null,
      init: function() {
        EdgeList.leftEnd = EdgeList.createHalfEdge(null, "l");
        EdgeList.rightEnd = EdgeList.createHalfEdge(null, "l");
        EdgeList.leftEnd.r = EdgeList.rightEnd;
        EdgeList.rightEnd.l = EdgeList.leftEnd;
        EdgeList.list.unshift(EdgeList.leftEnd, EdgeList.rightEnd);
      },
      createHalfEdge: function(edge, side) {
        return {
          edge: edge,
          side: side,
          vertex: null,
          l: null,
          r: null
        };
      },
      insert: function(lb, he) {
        he.l = lb;
        he.r = lb.r;
        lb.r.l = he;
        lb.r = he;
      },
      leftBound: function(p) {
        var he = EdgeList.leftEnd;
        do {
          he = he.r;
        } while (he != EdgeList.rightEnd && Geom.rightOf(he, p));
        he = he.l;
        return he;
      },
      del: function(he) {
        he.l.r = he.r;
        he.r.l = he.l;
        he.edge = null;
      },
      right: function(he) {
        return he.r;
      },
      left: function(he) {
        return he.l;
      },
      leftRegion: function(he) {
        return he.edge == null ? Sites.bottomSite : he.edge.region[he.side];
      },
      rightRegion: function(he) {
        return he.edge == null ? Sites.bottomSite : he.edge.region[d3_voronoi_opposite[he.side]];
      }
    };
    var Geom = {
      bisect: function(s1, s2) {
        var newEdge = {
          region: {
            l: s1,
            r: s2
          },
          ep: {
            l: null,
            r: null
          }
        };
        var dx = s2.x - s1.x, dy = s2.y - s1.y, adx = dx > 0 ? dx : -dx, ady = dy > 0 ? dy : -dy;
        newEdge.c = s1.x * dx + s1.y * dy + (dx * dx + dy * dy) * .5;
        if (adx > ady) {
          newEdge.a = 1;
          newEdge.b = dy / dx;
          newEdge.c /= dx;
        } else {
          newEdge.b = 1;
          newEdge.a = dx / dy;
          newEdge.c /= dy;
        }
        return newEdge;
      },
      intersect: function(el1, el2) {
        var e1 = el1.edge, e2 = el2.edge;
        if (!e1 || !e2 || e1.region.r == e2.region.r) {
          return null;
        }
        var d = e1.a * e2.b - e1.b * e2.a;
        if (Math.abs(d) < 1e-10) {
          return null;
        }
        var xint = (e1.c * e2.b - e2.c * e1.b) / d, yint = (e2.c * e1.a - e1.c * e2.a) / d, e1r = e1.region.r, e2r = e2.region.r, el, e;
        if (e1r.y < e2r.y || e1r.y == e2r.y && e1r.x < e2r.x) {
          el = el1;
          e = e1;
        } else {
          el = el2;
          e = e2;
        }
        var rightOfSite = xint >= e.region.r.x;
        if (rightOfSite && el.side === "l" || !rightOfSite && el.side === "r") {
          return null;
        }
        return {
          x: xint,
          y: yint
        };
      },
      rightOf: function(he, p) {
        var e = he.edge, topsite = e.region.r, rightOfSite = p.x > topsite.x;
        if (rightOfSite && he.side === "l") {
          return 1;
        }
        if (!rightOfSite && he.side === "r") {
          return 0;
        }
        if (e.a === 1) {
          var dyp = p.y - topsite.y, dxp = p.x - topsite.x, fast = 0, above = 0;
          if (!rightOfSite && e.b < 0 || rightOfSite && e.b >= 0) {
            above = fast = dyp >= e.b * dxp;
          } else {
            above = p.x + p.y * e.b > e.c;
            if (e.b < 0) {
              above = !above;
            }
            if (!above) {
              fast = 1;
            }
          }
          if (!fast) {
            var dxs = topsite.x - e.region.l.x;
            above = e.b * (dxp * dxp - dyp * dyp) < dxs * dyp * (1 + 2 * dxp / dxs + e.b * e.b);
            if (e.b < 0) {
              above = !above;
            }
          }
        } else {
          var yl = e.c - e.a * p.x, t1 = p.y - yl, t2 = p.x - topsite.x, t3 = yl - topsite.y;
          above = t1 * t1 > t2 * t2 + t3 * t3;
        }
        return he.side === "l" ? above : !above;
      },
      endPoint: function(edge, side, site) {
        edge.ep[side] = site;
        if (!edge.ep[d3_voronoi_opposite[side]]) return;
        callback(edge);
      },
      distance: function(s, t) {
        var dx = s.x - t.x, dy = s.y - t.y;
        return Math.sqrt(dx * dx + dy * dy);
      }
    };
    var EventQueue = {
      list: [],
      insert: function(he, site, offset) {
        he.vertex = site;
        he.ystar = site.y + offset;
        for (var i = 0, list = EventQueue.list, l = list.length; i < l; i++) {
          var next = list[i];
          if (he.ystar > next.ystar || he.ystar == next.ystar && site.x > next.vertex.x) {
            continue;
          } else {
            break;
          }
        }
        list.splice(i, 0, he);
      },
      del: function(he) {
        for (var i = 0, ls = EventQueue.list, l = ls.length; i < l && ls[i] != he; ++i) {}
        ls.splice(i, 1);
      },
      empty: function() {
        return EventQueue.list.length === 0;
      },
      nextEvent: function(he) {
        for (var i = 0, ls = EventQueue.list, l = ls.length; i < l; ++i) {
          if (ls[i] == he) return ls[i + 1];
        }
        return null;
      },
      min: function() {
        var elem = EventQueue.list[0];
        return {
          x: elem.vertex.x,
          y: elem.ystar
        };
      },
      extractMin: function() {
        return EventQueue.list.shift();
      }
    };
    EdgeList.init();
    Sites.bottomSite = Sites.list.shift();
    var newSite = Sites.list.shift(), newIntStar;
    var lbnd, rbnd, llbnd, rrbnd, bisector;
    var bot, top, temp, p, v;
    var e, pm;
    while (true) {
      if (!EventQueue.empty()) {
        newIntStar = EventQueue.min();
      }
      if (newSite && (EventQueue.empty() || newSite.y < newIntStar.y || newSite.y == newIntStar.y && newSite.x < newIntStar.x)) {
        lbnd = EdgeList.leftBound(newSite);
        rbnd = EdgeList.right(lbnd);
        bot = EdgeList.rightRegion(lbnd);
        e = Geom.bisect(bot, newSite);
        bisector = EdgeList.createHalfEdge(e, "l");
        EdgeList.insert(lbnd, bisector);
        p = Geom.intersect(lbnd, bisector);
        if (p) {
          EventQueue.del(lbnd);
          EventQueue.insert(lbnd, p, Geom.distance(p, newSite));
        }
        lbnd = bisector;
        bisector = EdgeList.createHalfEdge(e, "r");
        EdgeList.insert(lbnd, bisector);
        p = Geom.intersect(bisector, rbnd);
        if (p) {
          EventQueue.insert(bisector, p, Geom.distance(p, newSite));
        }
        newSite = Sites.list.shift();
      } else if (!EventQueue.empty()) {
        lbnd = EventQueue.extractMin();
        llbnd = EdgeList.left(lbnd);
        rbnd = EdgeList.right(lbnd);
        rrbnd = EdgeList.right(rbnd);
        bot = EdgeList.leftRegion(lbnd);
        top = EdgeList.rightRegion(rbnd);
        v = lbnd.vertex;
        Geom.endPoint(lbnd.edge, lbnd.side, v);
        Geom.endPoint(rbnd.edge, rbnd.side, v);
        EdgeList.del(lbnd);
        EventQueue.del(rbnd);
        EdgeList.del(rbnd);
        pm = "l";
        if (bot.y > top.y) {
          temp = bot;
          bot = top;
          top = temp;
          pm = "r";
        }
        e = Geom.bisect(bot, top);
        bisector = EdgeList.createHalfEdge(e, pm);
        EdgeList.insert(llbnd, bisector);
        Geom.endPoint(e, d3_voronoi_opposite[pm], v);
        p = Geom.intersect(llbnd, bisector);
        if (p) {
          EventQueue.del(llbnd);
          EventQueue.insert(llbnd, p, Geom.distance(p, bot));
        }
        p = Geom.intersect(bisector, rrbnd);
        if (p) {
          EventQueue.insert(bisector, p, Geom.distance(p, bot));
        }
      } else {
        break;
      }
    }
    for (lbnd = EdgeList.right(EdgeList.leftEnd); lbnd != EdgeList.rightEnd; lbnd = EdgeList.right(lbnd)) {
      callback(lbnd.edge);
    }
  }
  d3.geom.delaunay = function(vertices) {
    var edges = vertices.map(function() {
      return [];
    }), triangles = [];
    d3_voronoi_tessellate(vertices, function(e) {
      edges[e.region.l.index].push(vertices[e.region.r.index]);
    });
    edges.forEach(function(edge, i) {
      var v = vertices[i], cx = v[0], cy = v[1];
      edge.forEach(function(v) {
        v.angle = Math.atan2(v[0] - cx, v[1] - cy);
      });
      edge.sort(function(a, b) {
        return a.angle - b.angle;
      });
      for (var j = 0, m = edge.length - 1; j < m; j++) {
        triangles.push([ v, edge[j], edge[j + 1] ]);
      }
    });
    return triangles;
  };
  d3.geom.quadtree = function(points, x1, y1, x2, y2) {
    var p, i = -1, n = points.length;
    if (n && isNaN(points[0].x)) points = points.map(d3_geom_quadtreePoint);
    if (arguments.length < 5) {
      if (arguments.length === 3) {
        y2 = x2 = y1;
        y1 = x1;
      } else {
        x1 = y1 = Infinity;
        x2 = y2 = -Infinity;
        while (++i < n) {
          p = points[i];
          if (p.x < x1) x1 = p.x;
          if (p.y < y1) y1 = p.y;
          if (p.x > x2) x2 = p.x;
          if (p.y > y2) y2 = p.y;
        }
        var dx = x2 - x1, dy = y2 - y1;
        if (dx > dy) y2 = y1 + dx; else x2 = x1 + dy;
      }
    }
    function insert(n, p, x1, y1, x2, y2) {
      if (isNaN(p.x) || isNaN(p.y)) return;
      if (n.leaf) {
        var v = n.point;
        if (v) {
          if (Math.abs(v.x - p.x) + Math.abs(v.y - p.y) < .01) {
            insertChild(n, p, x1, y1, x2, y2);
          } else {
            n.point = null;
            insertChild(n, v, x1, y1, x2, y2);
            insertChild(n, p, x1, y1, x2, y2);
          }
        } else {
          n.point = p;
        }
      } else {
        insertChild(n, p, x1, y1, x2, y2);
      }
    }
    function insertChild(n, p, x1, y1, x2, y2) {
      var sx = (x1 + x2) * .5, sy = (y1 + y2) * .5, right = p.x >= sx, bottom = p.y >= sy, i = (bottom << 1) + right;
      n.leaf = false;
      n = n.nodes[i] || (n.nodes[i] = d3_geom_quadtreeNode());
      if (right) x1 = sx; else x2 = sx;
      if (bottom) y1 = sy; else y2 = sy;
      insert(n, p, x1, y1, x2, y2);
    }
    var root = d3_geom_quadtreeNode();
    root.add = function(p) {
      insert(root, p, x1, y1, x2, y2);
    };
    root.visit = function(f) {
      d3_geom_quadtreeVisit(f, root, x1, y1, x2, y2);
    };
    points.forEach(root.add);
    return root;
  };
  function d3_geom_quadtreeNode() {
    return {
      leaf: true,
      nodes: [],
      point: null
    };
  }
  function d3_geom_quadtreeVisit(f, node, x1, y1, x2, y2) {
    if (!f(node, x1, y1, x2, y2)) {
      var sx = (x1 + x2) * .5, sy = (y1 + y2) * .5, children = node.nodes;
      if (children[0]) d3_geom_quadtreeVisit(f, children[0], x1, y1, sx, sy);
      if (children[1]) d3_geom_quadtreeVisit(f, children[1], sx, y1, x2, sy);
      if (children[2]) d3_geom_quadtreeVisit(f, children[2], x1, sy, sx, y2);
      if (children[3]) d3_geom_quadtreeVisit(f, children[3], sx, sy, x2, y2);
    }
  }
  function d3_geom_quadtreePoint(p) {
    return {
      x: p[0],
      y: p[1]
    };
  }
  d3.time = {};
  var d3_time = Date;
  function d3_time_utc() {
    this._ = new Date(arguments.length > 1 ? Date.UTC.apply(this, arguments) : arguments[0]);
  }
  d3_time_utc.prototype = {
    getDate: function() {
      return this._.getUTCDate();
    },
    getDay: function() {
      return this._.getUTCDay();
    },
    getFullYear: function() {
      return this._.getUTCFullYear();
    },
    getHours: function() {
      return this._.getUTCHours();
    },
    getMilliseconds: function() {
      return this._.getUTCMilliseconds();
    },
    getMinutes: function() {
      return this._.getUTCMinutes();
    },
    getMonth: function() {
      return this._.getUTCMonth();
    },
    getSeconds: function() {
      return this._.getUTCSeconds();
    },
    getTime: function() {
      return this._.getTime();
    },
    getTimezoneOffset: function() {
      return 0;
    },
    valueOf: function() {
      return this._.valueOf();
    },
    setDate: function() {
      d3_time_prototype.setUTCDate.apply(this._, arguments);
    },
    setDay: function() {
      d3_time_prototype.setUTCDay.apply(this._, arguments);
    },
    setFullYear: function() {
      d3_time_prototype.setUTCFullYear.apply(this._, arguments);
    },
    setHours: function() {
      d3_time_prototype.setUTCHours.apply(this._, arguments);
    },
    setMilliseconds: function() {
      d3_time_prototype.setUTCMilliseconds.apply(this._, arguments);
    },
    setMinutes: function() {
      d3_time_prototype.setUTCMinutes.apply(this._, arguments);
    },
    setMonth: function() {
      d3_time_prototype.setUTCMonth.apply(this._, arguments);
    },
    setSeconds: function() {
      d3_time_prototype.setUTCSeconds.apply(this._, arguments);
    },
    setTime: function() {
      d3_time_prototype.setTime.apply(this._, arguments);
    }
  };
  var d3_time_prototype = Date.prototype;
  d3.time.format = function(template) {
    var n = template.length;
    function format(date) {
      var string = [], i = -1, j = 0, c, f;
      while (++i < n) {
        if (template.charCodeAt(i) == 37) {
          string.push(template.substring(j, i), (f = d3_time_formats[c = template.charAt(++i)]) ? f(date) : c);
          j = i + 1;
        }
      }
      string.push(template.substring(j, i));
      return string.join("");
    }
    format.parse = function(string) {
      var d = {
        y: 1900,
        m: 0,
        d: 1,
        H: 0,
        M: 0,
        S: 0,
        L: 0
      }, i = d3_time_parse(d, template, string, 0);
      if (i != string.length) return null;
      if ("p" in d) d.H = d.H % 12 + d.p * 12;
      var date = new d3_time;
      date.setFullYear(d.y, d.m, d.d);
      date.setHours(d.H, d.M, d.S, d.L);
      return date;
    };
    format.toString = function() {
      return template;
    };
    return format;
  };
  function d3_time_parse(date, template, string, j) {
    var c, p, i = 0, n = template.length, m = string.length;
    while (i < n) {
      if (j >= m) return -1;
      c = template.charCodeAt(i++);
      if (c == 37) {
        p = d3_time_parsers[template.charAt(i++)];
        if (!p || (j = p(date, string, j)) < 0) return -1;
      } else if (c != string.charCodeAt(j++)) {
        return -1;
      }
    }
    return j;
  }
  var d3_time_zfill2 = d3.format("02d"), d3_time_zfill3 = d3.format("03d"), d3_time_zfill4 = d3.format("04d"), d3_time_sfill2 = d3.format("2d");
  var d3_time_formats = {
    a: function(d) {
      return d3_time_weekdays[d.getDay()].substring(0, 3);
    },
    A: function(d) {
      return d3_time_weekdays[d.getDay()];
    },
    b: function(d) {
      return d3_time_months[d.getMonth()].substring(0, 3);
    },
    B: function(d) {
      return d3_time_months[d.getMonth()];
    },
    c: d3.time.format("%a %b %e %H:%M:%S %Y"),
    d: function(d) {
      return d3_time_zfill2(d.getDate());
    },
    e: function(d) {
      return d3_time_sfill2(d.getDate());
    },
    H: function(d) {
      return d3_time_zfill2(d.getHours());
    },
    I: function(d) {
      return d3_time_zfill2(d.getHours() % 12 || 12);
    },
    j: function(d) {
      return d3_time_zfill3(1 + d3.time.dayOfYear(d));
    },
    L: function(d) {
      return d3_time_zfill3(d.getMilliseconds());
    },
    m: function(d) {
      return d3_time_zfill2(d.getMonth() + 1);
    },
    M: function(d) {
      return d3_time_zfill2(d.getMinutes());
    },
    p: function(d) {
      return d.getHours() >= 12 ? "PM" : "AM";
    },
    S: function(d) {
      return d3_time_zfill2(d.getSeconds());
    },
    U: function(d) {
      return d3_time_zfill2(d3.time.sundayOfYear(d));
    },
    w: function(d) {
      return d.getDay();
    },
    W: function(d) {
      return d3_time_zfill2(d3.time.mondayOfYear(d));
    },
    x: d3.time.format("%m/%d/%y"),
    X: d3.time.format("%H:%M:%S"),
    y: function(d) {
      return d3_time_zfill2(d.getFullYear() % 100);
    },
    Y: function(d) {
      return d3_time_zfill4(d.getFullYear() % 1e4);
    },
    Z: d3_time_zone,
    "%": function(d) {
      return "%";
    }
  };
  var d3_time_parsers = {
    a: d3_time_parseWeekdayAbbrev,
    A: d3_time_parseWeekday,
    b: d3_time_parseMonthAbbrev,
    B: d3_time_parseMonth,
    c: d3_time_parseLocaleFull,
    d: d3_time_parseDay,
    e: d3_time_parseDay,
    H: d3_time_parseHour24,
    I: d3_time_parseHour24,
    L: d3_time_parseMilliseconds,
    m: d3_time_parseMonthNumber,
    M: d3_time_parseMinutes,
    p: d3_time_parseAmPm,
    S: d3_time_parseSeconds,
    x: d3_time_parseLocaleDate,
    X: d3_time_parseLocaleTime,
    y: d3_time_parseYear,
    Y: d3_time_parseFullYear
  };
  function d3_time_parseWeekdayAbbrev(date, string, i) {
    return d3_time_weekdayAbbrevRe.test(string.substring(i, i += 3)) ? i : -1;
  }
  function d3_time_parseWeekday(date, string, i) {
    d3_time_weekdayRe.lastIndex = 0;
    var n = d3_time_weekdayRe.exec(string.substring(i, i + 10));
    return n ? i += n[0].length : -1;
  }
  var d3_time_weekdayAbbrevRe = /^(?:sun|mon|tue|wed|thu|fri|sat)/i, d3_time_weekdayRe = /^(?:Sunday|Monday|Tuesday|Wednesday|Thursday|Friday|Saturday)/i, d3_time_weekdays = [ "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday" ];
  function d3_time_parseMonthAbbrev(date, string, i) {
    var n = d3_time_monthAbbrevLookup.get(string.substring(i, i += 3).toLowerCase());
    return n == null ? -1 : (date.m = n, i);
  }
  var d3_time_monthAbbrevLookup = d3.map({
    jan: 0,
    feb: 1,
    mar: 2,
    apr: 3,
    may: 4,
    jun: 5,
    jul: 6,
    aug: 7,
    sep: 8,
    oct: 9,
    nov: 10,
    dec: 11
  });
  function d3_time_parseMonth(date, string, i) {
    d3_time_monthRe.lastIndex = 0;
    var n = d3_time_monthRe.exec(string.substring(i, i + 12));
    return n ? (date.m = d3_time_monthLookup.get(n[0].toLowerCase()), i += n[0].length) : -1;
  }
  var d3_time_monthRe = /^(?:January|February|March|April|May|June|July|August|September|October|November|December)/ig;
  var d3_time_monthLookup = d3.map({
    january: 0,
    february: 1,
    march: 2,
    april: 3,
    may: 4,
    june: 5,
    july: 6,
    august: 7,
    september: 8,
    october: 9,
    november: 10,
    december: 11
  });
  var d3_time_months = [ "January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December" ];
  function d3_time_parseLocaleFull(date, string, i) {
    return d3_time_parse(date, d3_time_formats.c.toString(), string, i);
  }
  function d3_time_parseLocaleDate(date, string, i) {
    return d3_time_parse(date, d3_time_formats.x.toString(), string, i);
  }
  function d3_time_parseLocaleTime(date, string, i) {
    return d3_time_parse(date, d3_time_formats.X.toString(), string, i);
  }
  function d3_time_parseFullYear(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.substring(i, i + 4));
    return n ? (date.y = +n[0], i += n[0].length) : -1;
  }
  function d3_time_parseYear(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.substring(i, i + 2));
    return n ? (date.y = d3_time_expandYear(+n[0]), i += n[0].length) : -1;
  }
  function d3_time_expandYear(d) {
    return d + (d > 68 ? 1900 : 2e3);
  }
  function d3_time_parseMonthNumber(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.substring(i, i + 2));
    return n ? (date.m = n[0] - 1, i += n[0].length) : -1;
  }
  function d3_time_parseDay(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.substring(i, i + 2));
    return n ? (date.d = +n[0], i += n[0].length) : -1;
  }
  function d3_time_parseHour24(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.substring(i, i + 2));
    return n ? (date.H = +n[0], i += n[0].length) : -1;
  }
  function d3_time_parseMinutes(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.substring(i, i + 2));
    return n ? (date.M = +n[0], i += n[0].length) : -1;
  }
  function d3_time_parseSeconds(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.substring(i, i + 2));
    return n ? (date.S = +n[0], i += n[0].length) : -1;
  }
  function d3_time_parseMilliseconds(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.substring(i, i + 3));
    return n ? (date.L = +n[0], i += n[0].length) : -1;
  }
  var d3_time_numberRe = /\s*\d+/;
  function d3_time_parseAmPm(date, string, i) {
    var n = d3_time_amPmLookup.get(string.substring(i, i += 2).toLowerCase());
    return n == null ? -1 : (date.p = n, i);
  }
  var d3_time_amPmLookup = d3.map({
    am: 0,
    pm: 1
  });
  function d3_time_zone(d) {
    var z = d.getTimezoneOffset(), zs = z > 0 ? "-" : "+", zh = ~~(Math.abs(z) / 60), zm = Math.abs(z) % 60;
    return zs + d3_time_zfill2(zh) + d3_time_zfill2(zm);
  }
  d3.time.format.utc = function(template) {
    var local = d3.time.format(template);
    function format(date) {
      try {
        d3_time = d3_time_utc;
        var utc = new d3_time;
        utc._ = date;
        return local(utc);
      } finally {
        d3_time = Date;
      }
    }
    format.parse = function(string) {
      try {
        d3_time = d3_time_utc;
        var date = local.parse(string);
        return date && date._;
      } finally {
        d3_time = Date;
      }
    };
    format.toString = local.toString;
    return format;
  };
  var d3_time_formatIso = d3.time.format.utc("%Y-%m-%dT%H:%M:%S.%LZ");
  d3.time.format.iso = Date.prototype.toISOString ? d3_time_formatIsoNative : d3_time_formatIso;
  function d3_time_formatIsoNative(date) {
    return date.toISOString();
  }
  d3_time_formatIsoNative.parse = function(string) {
    var date = new Date(string);
    return isNaN(date) ? null : date;
  };
  d3_time_formatIsoNative.toString = d3_time_formatIso.toString;
  function d3_time_interval(local, step, number) {
    function round(date) {
      var d0 = local(date), d1 = offset(d0, 1);
      return date - d0 < d1 - date ? d0 : d1;
    }
    function ceil(date) {
      step(date = local(new d3_time(date - 1)), 1);
      return date;
    }
    function offset(date, k) {
      step(date = new d3_time(+date), k);
      return date;
    }
    function range(t0, t1, dt) {
      var time = ceil(t0), times = [];
      if (dt > 1) {
        while (time < t1) {
          if (!(number(time) % dt)) times.push(new Date(+time));
          step(time, 1);
        }
      } else {
        while (time < t1) times.push(new Date(+time)), step(time, 1);
      }
      return times;
    }
    function range_utc(t0, t1, dt) {
      try {
        d3_time = d3_time_utc;
        var utc = new d3_time_utc;
        utc._ = t0;
        return range(utc, t1, dt);
      } finally {
        d3_time = Date;
      }
    }
    local.floor = local;
    local.round = round;
    local.ceil = ceil;
    local.offset = offset;
    local.range = range;
    var utc = local.utc = d3_time_interval_utc(local);
    utc.floor = utc;
    utc.round = d3_time_interval_utc(round);
    utc.ceil = d3_time_interval_utc(ceil);
    utc.offset = d3_time_interval_utc(offset);
    utc.range = range_utc;
    return local;
  }
  function d3_time_interval_utc(method) {
    return function(date, k) {
      try {
        d3_time = d3_time_utc;
        var utc = new d3_time_utc;
        utc._ = date;
        return method(utc, k)._;
      } finally {
        d3_time = Date;
      }
    };
  }
  d3.time.second = d3_time_interval(function(date) {
    return new d3_time(Math.floor(date / 1e3) * 1e3);
  }, function(date, offset) {
    date.setTime(date.getTime() + Math.floor(offset) * 1e3);
  }, function(date) {
    return date.getSeconds();
  });
  d3.time.seconds = d3.time.second.range;
  d3.time.seconds.utc = d3.time.second.utc.range;
  d3.time.minute = d3_time_interval(function(date) {
    return new d3_time(Math.floor(date / 6e4) * 6e4);
  }, function(date, offset) {
    date.setTime(date.getTime() + Math.floor(offset) * 6e4);
  }, function(date) {
    return date.getMinutes();
  });
  d3.time.minutes = d3.time.minute.range;
  d3.time.minutes.utc = d3.time.minute.utc.range;
  d3.time.hour = d3_time_interval(function(date) {
    var timezone = date.getTimezoneOffset() / 60;
    return new d3_time((Math.floor(date / 36e5 - timezone) + timezone) * 36e5);
  }, function(date, offset) {
    date.setTime(date.getTime() + Math.floor(offset) * 36e5);
  }, function(date) {
    return date.getHours();
  });
  d3.time.hours = d3.time.hour.range;
  d3.time.hours.utc = d3.time.hour.utc.range;
  d3.time.day = d3_time_interval(function(date) {
    var day = new d3_time(0, date.getMonth(), date.getDate());
    day.setFullYear(date.getFullYear());
    return day;
  }, function(date, offset) {
    date.setDate(date.getDate() + offset);
  }, function(date) {
    return date.getDate() - 1;
  });
  d3.time.days = d3.time.day.range;
  d3.time.days.utc = d3.time.day.utc.range;
  d3.time.dayOfYear = function(date) {
    var year = d3.time.year(date);
    return Math.floor((date - year - (date.getTimezoneOffset() - year.getTimezoneOffset()) * 6e4) / 864e5);
  };
  d3_time_weekdays.forEach(function(day, i) {
    day = day.toLowerCase();
    i = 7 - i;
    var interval = d3.time[day] = d3_time_interval(function(date) {
      (date = d3.time.day(date)).setDate(date.getDate() - (date.getDay() + i) % 7);
      return date;
    }, function(date, offset) {
      date.setDate(date.getDate() + Math.floor(offset) * 7);
    }, function(date) {
      var day = d3.time.year(date).getDay();
      return Math.floor((d3.time.dayOfYear(date) + (day + i) % 7) / 7) - (day !== i);
    });
    d3.time[day + "s"] = interval.range;
    d3.time[day + "s"].utc = interval.utc.range;
    d3.time[day + "OfYear"] = function(date) {
      var day = d3.time.year(date).getDay();
      return Math.floor((d3.time.dayOfYear(date) + (day + i) % 7) / 7);
    };
  });
  d3.time.week = d3.time.sunday;
  d3.time.weeks = d3.time.sunday.range;
  d3.time.weeks.utc = d3.time.sunday.utc.range;
  d3.time.weekOfYear = d3.time.sundayOfYear;
  d3.time.month = d3_time_interval(function(date) {
    date = d3.time.day(date);
    date.setDate(1);
    return date;
  }, function(date, offset) {
    date.setMonth(date.getMonth() + offset);
  }, function(date) {
    return date.getMonth();
  });
  d3.time.months = d3.time.month.range;
  d3.time.months.utc = d3.time.month.utc.range;
  d3.time.year = d3_time_interval(function(date) {
    date = d3.time.day(date);
    date.setMonth(0, 1);
    return date;
  }, function(date, offset) {
    date.setFullYear(date.getFullYear() + offset);
  }, function(date) {
    return date.getFullYear();
  });
  d3.time.years = d3.time.year.range;
  d3.time.years.utc = d3.time.year.utc.range;
  function d3_time_scale(linear, methods, format) {
    function scale(x) {
      return linear(x);
    }
    scale.invert = function(x) {
      return d3_time_scaleDate(linear.invert(x));
    };
    scale.domain = function(x) {
      if (!arguments.length) return linear.domain().map(d3_time_scaleDate);
      linear.domain(x);
      return scale;
    };
    scale.nice = function(m) {
      var extent = d3_time_scaleExtent(scale.domain());
      return scale.domain([ m.floor(extent[0]), m.ceil(extent[1]) ]);
    };
    scale.ticks = function(m, k) {
      var extent = d3_time_scaleExtent(scale.domain());
      if (typeof m !== "function") {
        var span = extent[1] - extent[0], target = span / m, i = d3.bisect(d3_time_scaleSteps, target);
        if (i == d3_time_scaleSteps.length) return methods.year(extent, m);
        if (!i) return linear.ticks(m).map(d3_time_scaleDate);
        if (Math.log(target / d3_time_scaleSteps[i - 1]) < Math.log(d3_time_scaleSteps[i] / target)) --i;
        m = methods[i];
        k = m[1];
        m = m[0].range;
      }
      return m(extent[0], new Date(+extent[1] + 1), k);
    };
    scale.tickFormat = function() {
      return format;
    };
    scale.copy = function() {
      return d3_time_scale(linear.copy(), methods, format);
    };
    return d3.rebind(scale, linear, "range", "rangeRound", "interpolate", "clamp");
  }
  function d3_time_scaleExtent(domain) {
    var start = domain[0], stop = domain[domain.length - 1];
    return start < stop ? [ start, stop ] : [ stop, start ];
  }
  function d3_time_scaleDate(t) {
    return new Date(t);
  }
  function d3_time_scaleFormat(formats) {
    return function(date) {
      var i = formats.length - 1, f = formats[i];
      while (!f[1](date)) f = formats[--i];
      return f[0](date);
    };
  }
  function d3_time_scaleSetYear(y) {
    var d = new Date(y, 0, 1);
    d.setFullYear(y);
    return d;
  }
  function d3_time_scaleGetYear(d) {
    var y = d.getFullYear(), d0 = d3_time_scaleSetYear(y), d1 = d3_time_scaleSetYear(y + 1);
    return y + (d - d0) / (d1 - d0);
  }
  var d3_time_scaleSteps = [ 1e3, 5e3, 15e3, 3e4, 6e4, 3e5, 9e5, 18e5, 36e5, 108e5, 216e5, 432e5, 864e5, 1728e5, 6048e5, 2592e6, 7776e6, 31536e6 ];
  var d3_time_scaleLocalMethods = [ [ d3.time.second, 1 ], [ d3.time.second, 5 ], [ d3.time.second, 15 ], [ d3.time.second, 30 ], [ d3.time.minute, 1 ], [ d3.time.minute, 5 ], [ d3.time.minute, 15 ], [ d3.time.minute, 30 ], [ d3.time.hour, 1 ], [ d3.time.hour, 3 ], [ d3.time.hour, 6 ], [ d3.time.hour, 12 ], [ d3.time.day, 1 ], [ d3.time.day, 2 ], [ d3.time.week, 1 ], [ d3.time.month, 1 ], [ d3.time.month, 3 ], [ d3.time.year, 1 ] ];
  var d3_time_scaleLocalFormats = [ [ d3.time.format("%Y"), function(d) {
    return true;
  } ], [ d3.time.format("%B"), function(d) {
    return d.getMonth();
  } ], [ d3.time.format("%b %d"), function(d) {
    return d.getDate() != 1;
  } ], [ d3.time.format("%a %d"), function(d) {
    return d.getDay() && d.getDate() != 1;
  } ], [ d3.time.format("%I %p"), function(d) {
    return d.getHours();
  } ], [ d3.time.format("%I:%M"), function(d) {
    return d.getMinutes();
  } ], [ d3.time.format(":%S"), function(d) {
    return d.getSeconds();
  } ], [ d3.time.format(".%L"), function(d) {
    return d.getMilliseconds();
  } ] ];
  var d3_time_scaleLinear = d3.scale.linear(), d3_time_scaleLocalFormat = d3_time_scaleFormat(d3_time_scaleLocalFormats);
  d3_time_scaleLocalMethods.year = function(extent, m) {
    return d3_time_scaleLinear.domain(extent.map(d3_time_scaleGetYear)).ticks(m).map(d3_time_scaleSetYear);
  };
  d3.time.scale = function() {
    return d3_time_scale(d3.scale.linear(), d3_time_scaleLocalMethods, d3_time_scaleLocalFormat);
  };
  var d3_time_scaleUTCMethods = d3_time_scaleLocalMethods.map(function(m) {
    return [ m[0].utc, m[1] ];
  });
  var d3_time_scaleUTCFormats = [ [ d3.time.format.utc("%Y"), function(d) {
    return true;
  } ], [ d3.time.format.utc("%B"), function(d) {
    return d.getUTCMonth();
  } ], [ d3.time.format.utc("%b %d"), function(d) {
    return d.getUTCDate() != 1;
  } ], [ d3.time.format.utc("%a %d"), function(d) {
    return d.getUTCDay() && d.getUTCDate() != 1;
  } ], [ d3.time.format.utc("%I %p"), function(d) {
    return d.getUTCHours();
  } ], [ d3.time.format.utc("%I:%M"), function(d) {
    return d.getUTCMinutes();
  } ], [ d3.time.format.utc(":%S"), function(d) {
    return d.getUTCSeconds();
  } ], [ d3.time.format.utc(".%L"), function(d) {
    return d.getUTCMilliseconds();
  } ] ];
  var d3_time_scaleUTCFormat = d3_time_scaleFormat(d3_time_scaleUTCFormats);
  function d3_time_scaleUTCSetYear(y) {
    var d = new Date(Date.UTC(y, 0, 1));
    d.setUTCFullYear(y);
    return d;
  }
  function d3_time_scaleUTCGetYear(d) {
    var y = d.getUTCFullYear(), d0 = d3_time_scaleUTCSetYear(y), d1 = d3_time_scaleUTCSetYear(y + 1);
    return y + (d - d0) / (d1 - d0);
  }
  d3_time_scaleUTCMethods.year = function(extent, m) {
    return d3_time_scaleLinear.domain(extent.map(d3_time_scaleUTCGetYear)).ticks(m).map(d3_time_scaleUTCSetYear);
  };
  d3.time.scale.utc = function() {
    return d3_time_scale(d3.scale.linear(), d3_time_scaleUTCMethods, d3_time_scaleUTCFormat);
  };
})();