Move data files into examples directory.

This way, we don't need symlinks (which don't work on Windows). This commit also
simplifies the structure of the flare.json file, so that we don't need to tricky
conversion of the JSON map—it can be read directly by the hierarchy layout.

examples/albers/albers.html

@@ -51,7 +51,7 @@ <h3>Albers Projection</h3>
   .append("svg:g")
     .attr("id", "states");
 
-d3.json("../../data/us-states.json", function(collection) {
+d3.json("../data/us-states.json", function(collection) {
   d3.select("#states")
     .selectAll("path")
       .data(collection.features)

examples/azimuthal/azimuthal.js

@@ -2,7 +2,7 @@ var xy = d3.geo.azimuthal().scale(240).mode("stereographic"),
     path = d3.geo.path().projection(xy),
     svg = d3.select("body").append("svg:svg");
 
-d3.json("../../data/world-countries.json", function(collection) {
+d3.json("../data/world-countries.json", function(collection) {
   svg.selectAll("path")
       .data(collection.features)
     .enter().append("svg:path")

examples/bubble/bubble.js

@@ -11,7 +11,7 @@ var vis = d3.select("#chart").append("svg:svg")
     .attr("height", r)
     .attr("class", "bubble");
 
-d3.json("flare.json", function(json) {
+d3.json("../data/flare.json", function(json) {
   var node = vis.selectAll("g.node")
       .data(bubble(classes(json))
       .filter(function(d) { return !d.children; }))
@@ -37,18 +37,8 @@ function classes(root) {
   var classes = [];
 
   function recurse(name, node) {
-    for (var childName in node) {
-      var child = node[childName];
-      if (isNaN(child)) {
-        recurse(childName, child);
-      } else {
-        classes.push({
-          className: childName,
-          packageName: name,
-          value: child
-        });
-      }
-    }
+    if (node.children) node.children.forEach(function(child) { recurse(node.name, child); });
+    else classes.push({packageName: name, className: node.name, value: node.size});
   }
 
   recurse(null, root);

examples/choropleth/choropleth-area.html

@@ -34,7 +34,7 @@
     .domain([10, 500])
     .range(["brown", "steelblue"]);
 
-d3.json("../../data/us-counties.json", function(json) {
+d3.json("../data/us-counties.json", function(json) {
   counties.selectAll("path")
       .data(json.features)
     .enter().append("svg:path")

examples/choropleth/choropleth-bounds.html

@@ -29,7 +29,7 @@
 
 var path = d3.geo.path();
 
-d3.json("../../data/us-counties.json", function(json) {
+d3.json("../data/us-counties.json", function(json) {
   counties.selectAll("path")
       .data(json.features)
     .enter().append("svg:path")

examples/cluster/cluster-radial.js

@@ -1,9 +1,7 @@
 var r = 960 / 2;
 
 var cluster = d3.layout.cluster()
-    .size([360, r - 120])
-    .sort(null)
-    .children(function(d) { return isNaN(d.value) ? d3.entries(d.value) : null; });
+    .size([360, r - 120]);
 
 var diagonal = d3.svg.diagonal.radial()
     .projection(function(d) { return [d.y, d.x / 180 * Math.PI]; });
@@ -14,8 +12,8 @@ var vis = d3.select("#chart").append("svg:svg")
   .append("svg:g")
     .attr("transform", "translate(" + r + "," + r + ")");
 
-d3.json("flare.json", function(json) {
-  var nodes = cluster(d3.entries(json)[0]);
+d3.json("../data/flare.json", function(json) {
+  var nodes = cluster(json);
 
   var link = vis.selectAll("path.link")
       .data(cluster.links(nodes))
@@ -37,5 +35,5 @@ d3.json("flare.json", function(json) {
       .attr("dy", ".31em")
       .attr("text-anchor", function(d) { return d.x < 180 ? "start" : "end"; })
       .attr("transform", function(d) { return d.x < 180 ? null : "rotate(180)"; })
-      .text(function(d) { return d.key; });
+      .text(function(d) { return d.name; });
 });