Issue labeling d3 sunburst

Question

I am developing a d3 sunburst type.

Everything is ok, It is taking the flare JSON correctly but, when I go to label the path look what is happening:

The code is the following:

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

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

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

var hue = d3.scale.ordinal().range(["#feec76","#aec7e8","#ff00bf","#7f7f7f"]);

var svg = d3.select("body").append("svg")
    .attr("width", width)
    .attr("height", height)
  .append("g")
    .attr("transform", "translate(" + width / 2 + "," + (height / 2 + 10) + ")");

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

var arc = d3.svg.arc()
    .startAngle(function(d) { return Math.max(0, Math.min(2 * Math.PI, x(d.x))); })
    .endAngle(function(d) { return Math.max(0, Math.min(2 * Math.PI, x(d.x + d.dx))); })
    .innerRadius(function(d) { return Math.max(0, y(d.y)); })
    .outerRadius(function(d) { return Math.max(0, y(d.y + d.dy)); });

d3.json("http://api.printoriente.com/treemap.php", function(error, root) {
  var g = svg.selectAll("g")
      .data(partition.nodes(root))
    .enter().append("g");

  var path = g.append("path")
    .attr("d", arc)
    .style("fill", function(d) { return hue((d.children ? d : d.parent).name); })
    .on("click", click);

  var text = g.append("text")
    .attr("transform", function(d) { return "rotate(" + computeTextRotation(d) + ")"; })
    .attr("x", function(d) { return y(d.y); })
    .attr("dx", "6") // margin
    .attr("dy", ".35em") // vertical-align
    .text(function(d) { return d.name; });

And the rotation code is:

function computeTextRotation(d) {
  return (x(d.x + d.dx / 2) - Math.PI / 2) / Math.PI * 180;
}

This script works for all others d3 but I have to put those colors for each path.

Where is the problem?

Regards.

UPDATED: d3 sunburst with small font-size:

UPDATED: I want something like this:

UPDATED: Take a look of internal labels:

Answer 1

I'm not sure where you got the code to calculate the angle from, but it seems to be completely off. If you look at this example , the code to compute the angle is (with everything else being equal)

var angle = (d.x + d.dx / 2) * 180 / Math.PI - 90;

Replacing the code in your example with that fixes the angles. To fix the positions, you can adjust the dx offset of the labels, eg

.attr("dx", 50")

Complete example here .