test_sunburst

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<!DOCTYPE html>
<meta charset="utf-8">
<style>

path {
  stroke: #fff;
}

</style>
<body>
<script src="//d3js.org/d3.v3.min.js"></script>
<script>

var width = 960,
    height = 700,
    radius = (Math.min(width, height) / 2) - 10;

var formatNumber = d3.format(",d");

var x = d3.scale.linear()
    .range([0, 2 * Math.PI]);

var y = d3.scale.sqrt()
    .range([0, radius]);

var color = d3.scale.category20c();

var partition = d3.layout.partition()
    .value(function(d) { return d.size; });

var svg = d3.select("body").append("svg")
    .attr("width", width)
    .attr("height", height)
  .append("g")
    .attr("transform", "translate(" + width / 2 + "," + (height / 2) + ")");

d3.json("flare.json", function(error, root) {
  console.log(root);
  var path = svg.datum(root).selectAll("path")
  .data(partition.nodes)
  .enter().append("g")

path.append("path")
  .attr("display", function(d) { return d.depth ? null : "none"; }) // hide inner ring
  .attr("d", arc)
  .style("stroke", "#fff")
  .style("fill", function(d) { return color((d.children ? d : d.parent).name); })
  .style("fill-rule", "evenodd")
  .each(stash);

path.append("text")
        .text(function(d) { return d.name})
        .classed("label", true)
        .attr("x", function(d) { return d.x; })
        .attr("text-anchor", "middle")
        // translate to the desired point and set the rotation
        .attr("transform", function(d) {
            if (d.depth > 0) {
                return "translate(" + arc.centroid(d) + ")" +
                       "rotate(" + getAngle(d) + ")";
            }  else {
                return null;
            }
        })
        .attr("dx", "6") // margin
        .attr("dy", ".35em") // vertical-align
        .attr("pointer-events", "none");
  
  svg.selectAll("path")
      .data(partition.nodes(root))
    .enter().append("path")
      .attr("d", arc)
      .style("fill", function(d) { return color((d.children ? d : d.parent).name); })
      .on("click", click)
    .append("title")
      .text(function(d) { return d.name + "\n" + formatNumber(d.value); });
});

path.append("text")
        .text(function(d) { return d.name})
        .classed("label", true)
        .attr("x", function(d) { return d.x; })
        .attr("text-anchor", "middle")
        // translate to the desired point and set the rotation
        .attr("transform", function(d) {
            if (d.depth > 0) {
                return "translate(" + arc.centroid(d) + ")" +
                       "rotate(" + getAngle(d) + ")";
            }  else {
                return null;
            }
        })
        .attr("dx", "6") // margin
        .attr("dy", ".35em") // vertical-align
        .attr("pointer-events", "none");
  
function click(d) {
  svg.transition()
      .duration(750)
      .tween("scale", function() {
        var xd = d3.interpolate(x.domain(), [d.x, d.x + d.dx]),
            yd = d3.interpolate(y.domain(), [d.y, 1]),
            yr = d3.interpolate(y.range(), [d.y ? 20 : 0, radius]);
        return function(t) { x.domain(xd(t)); y.domain(yd(t)).range(yr(t)); };
      })
    .selectAll("path")
      .attrTween("d", function(d) { return function() { return arc(d); }; });
}

d3.select(self.frameElement).style("height", height + "px");

</script>

https://d3js.org/d3.v3.min.js