no binning for <20 discrete numeric values, fixed % labels

scout-ui/src/minicharts/d3fns/few.js

@@ -1,6 +1,7 @@
 var d3 = require('d3');
 var _ = require('lodash');
 var tooltipHtml = require('./tooltip.jade');
+var shared = require('./shared');
 var debug = require('debug')('scout-ui:minicharts:few');
 
 require('d3-tip')(d3);
@@ -25,7 +26,7 @@ module.exports = function(data, g, width, height, options) {
       }
       return d.tooltip || tooltipHtml({
           label: d.label,
-          value: Math.round(d.value / sumValues * 100)
+          value: shared.percentFormat(d.value / sumValues)
         });
     })
     .direction('n')

scout-ui/src/minicharts/d3fns/many.js

@@ -1,6 +1,7 @@
 var d3 = require('d3');
 var _ = require('lodash');
 var tooltipHtml = require('./tooltip.jade');
+var shared = require('./shared');
 var debug = require('debug')('scout-ui:minicharts:many');
 
 require('d3-tip')(d3);
@@ -18,13 +19,13 @@ module.exports = function(data, g, width, height, options) {
     .rangeBands([0, width], 0.3, 0.0);
 
   var values = _.pluck(data, 'value');
+  var maxValue = d3.max(values);
+  var sumValues = d3.sum(values);
 
   var y = d3.scale.linear()
-    .domain([0, d3.max(values)])
+    .domain([0, maxValue])
     .range([height, 0]);
 
-  var sumY = d3.sum(values);
-
   // set up tooltips
   var tip = d3.tip()
     .attr('class', 'd3-tip')
@@ -34,7 +35,7 @@ module.exports = function(data, g, width, height, options) {
       }
       return d.tooltip || tooltipHtml({
           label: d.label,
-          value: d.value
+          value: shared.percentFormat(d.value / sumValues)
         });
     })
     .direction('n')
@@ -46,8 +47,6 @@ module.exports = function(data, g, width, height, options) {
 
   if (options.scale) {
     var maxVal = d3.max(y.domain());
-    var format = d3.format('%.1f');
-    var legendValues = [format(maxVal), format(maxVal / 2)];
 
     // @todo use a scale and wrap both text and line in g element
     var legend = g.append('g')
@@ -60,7 +59,7 @@ module.exports = function(data, g, width, height, options) {
       .attr('y', 0)
       .attr('dy', '0.3em')
       .attr('text-anchor', 'end')
-      .text(d3.max(y.domain()) + '%');
+      .text(shared.percentFormat(maxValue / sumValues));
 
     legend.append('text')
       .attr('class', 'legend')
@@ -69,7 +68,7 @@ module.exports = function(data, g, width, height, options) {
       .attr('y', height / 2)
       .attr('dy', '0.3em')
       .attr('text-anchor', 'end')
-      .text(d3.max(y.domain()) / 2 + '%');
+      .text(shared.percentFormat(maxValue / sumValues / 2));
 
     legend.append('text')
       .attr('class', 'legend')

scout-ui/src/minicharts/d3fns/number.js

@@ -13,37 +13,46 @@ module.exports = function(opts) {
   var height = opts.height - margin.top - margin.bottom;
   var el = opts.el;
 
-  // use the linear scale just to get nice binning values
-  var x = d3.scale.linear()
-    .domain(d3.extent(values))
-    .range([0, width]);
+  if (opts.data.unique < 20) {
+    var data = _(values)
+      .groupBy(function(d) {
+        return d;
+      })
+      .map(function(v, k) {
+        v.label = k;
+        v.value = v.length;
+        return v;
+      })
+      .value();
 
-  // Generate a histogram using approx. twenty uniformly-spaced bins
-  var ticks = x.ticks(20);
+  } else {
+    // use the linear scale just to get nice binning values
+    var x = d3.scale.linear()
+      .domain(d3.extent(values))
+      .range([0, width]);
 
-  var hist = d3.layout.histogram()
-    .bins(ticks);
+    // Generate a histogram using approx. twenty uniformly-spaced bins
+    var ticks = x.ticks(20);
+    var hist = d3.layout.histogram()
+      .bins(ticks);
 
-  var data = hist(values);
-  var sumY = d3.sum(_.pluck(data, 'y'));
+    var data = hist(values);
+    var sumY = d3.sum(_.pluck(data, 'y'));
 
-  _.each(data, function(d, i) {
-    var label;
-    if (i === 0) {
-      label = '< ' + (d.x + d.dx);
-    } else if (i === data.length - 1) {
-      label = '&ge; ' + d.x;
-    } else {
-      label = d.x + '-' + (d.x + d.dx);
-    }
-    // remapping keys to conform with all other types
-    d.value = d.y;
-    d.label = label;
-    d.tooltip = tooltipHtml({
-      label: label,
-      value: Math.round(d.y / sumY * 100)
+    _.each(data, function(d, i) {
+      var label;
+      if (i === 0) {
+        label = '< ' + (d.x + d.dx);
+      } else if (i === data.length - 1) {
+        label = '&ge; ' + d.x;
+      } else {
+        label = d.x + '-' + (d.x + d.dx);
+      }
+      // remapping keys to conform with all other types
+      d.value = d.y;
+      d.label = label;
     });
-  });
+  }
 
   // clear element first
   d3.select(el).selectAll('*').remove();
@@ -52,16 +61,23 @@ module.exports = function(opts) {
     .append('g')
     .attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');
 
-  many(data, g, width, height - 10, {
-    scale: true,
-    bgbars: false,
-    labels: {
+  var labels;
+  if (opts.data.unique < 20) {
+    labels = true;
+  } else {
+    labels = {
       text: function(d, i) {
         if (i === 0) return 'min: ' + d3.min(values);
         if (i === data.length - 1) return 'max: ' + d3.max(values);
         return '';
       }
-    }
+    };
+  }
+
+  many(data, g, width, height - 10, {
+    scale: true,
+    bgbars: false,
+    labels: labels
   });
 };
 

scout-ui/src/minicharts/d3fns/shared.js

@@ -1,3 +1,5 @@
+var d3 = require('d3');
+
 module.exports = {
 
   margin: {
@@ -7,4 +9,6 @@ module.exports = {
     left: 40
   },
 
+  percentFormat: d3.format('%.1f')
+
 };

scout-ui/src/minicharts/d3fns/tooltip.jade

@@ -1,3 +1,3 @@
 .tooltip-wrapper
   .tooltip-label!= label
-  .tooltip-value #{value}%
+  .tooltip-value #{value}