diff -r efd9c589177a -r c0b4a8b5a012 toolkit/javascript/d3/examples/pack/pack.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/toolkit/javascript/d3/examples/pack/pack.js	Thu Apr 10 14:20:23 2014 +0200
@@ -0,0 +1,33 @@
+var w = 960,
+    h = 960,
+    format = d3.format(",d");
+
+var pack = d3.layout.pack()
+    .size([w - 4, h - 4])
+    .value(function(d) { return d.size; });
+
+var vis = d3.select("#chart").append("svg:svg")
+    .attr("width", w)
+    .attr("height", h)
+    .attr("class", "pack")
+  .append("svg:g")
+    .attr("transform", "translate(2, 2)");
+
+d3.json("../data/flare.json", function(json) {
+  var node = vis.data([json]).selectAll("g.node")
+      .data(pack.nodes)
+    .enter().append("svg:g")
+      .attr("class", function(d) { return d.children ? "node" : "leaf node"; })
+      .attr("transform", function(d) { return "translate(" + d.x + "," + d.y + ")"; });
+
+  node.append("svg:title")
+      .text(function(d) { return d.name + (d.children ? "" : ": " + format(d.size)); });
+
+  node.append("svg:circle")
+      .attr("r", function(d) { return d.r; });
+
+  node.filter(function(d) { return !d.children; }).append("svg:text")
+      .attr("text-anchor", "middle")
+      .attr("dy", ".3em")
+      .text(function(d) { return d.name.substring(0, d.r / 3); });
+});