D3js Test

{
    "name": "Carte des services informatiques",
    "children": [
    {
        "name": "Services utilisateurs",
        "children" : [
        {
            "name": "Comptes et accès",
            "children" : [
            { "name": "Régles générales", "size": 500},
            { "name": "Création compte", "size": 500},
            { "name": "Supression compte", "size": 500},
            { "name": "Modification du mot de passe", "size": 500},
            { "name": "Modification des informations personnelles", "size": 500}
                ]
        },
[...]

var diameter = 960;

var tree_r = d3.layout.tree()
    .size([360, diameter / 2 - 120])
    .separation(function(a, b) { return (a.parent == b.parent ? 1 : 2) / a.depth; });

var diagonal_r = d3.svg.diagonal.radial()
    .projection(function(d) { return [d.y, d.x / 180 * Math.PI]; });

var svg_r = d3.select(".d3-1").append("svg")
    .attr("width", diameter)
    .attr("height", diameter - 150)
  .append("g")
    .attr("transform", "translate(" + diameter / 2 + "," + diameter / 2 + ")");

d3.json("ias.json", function(error, root) {
  var nodes = tree_r.nodes(root),
      links = tree_r.links(nodes);

  var link_r = svg_r.selectAll(".link")
      .data(links)
    .enter().append("path")
      .attr("class", "link")
      .attr("d", diagonal_r);

  var node_r = svg_r.selectAll(".node")
      .data(nodes)
    .enter().append("g")
      .attr("class", "node")
      .attr("transform", function(d) { return "rotate(" + (d.x - 90) + ")translate(" + d.y + ")"; })

  node_r.append("circle")
      .attr("r", 4.5);

  node_r.append("text")
      .attr("dy", ".31em")
      .attr("text-anchor", function(d) { return d.x < 180 ? "start" : "end"; })
      .attr("transform", function(d) { return d.x < 180 ? "translate(8)" : "rotate(180)translate(-8)"; })
      .text(function(d) { return d.name; });
});

d3.select(".d3-1").style("height", diameter - 150 + "px");