Force-Directed SVG Icons

Replaces the circles in the force-directed graph with some SVG icons.

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

.node {
  stroke: #fff;
  stroke-width: 1.5px;
}

.link {
  stroke: #999;
  stroke-opacity: .6;
}

</style>
<body>
<script src="https://d3js.org/d3.v3.min.js"></script>
<script>
var logos = {
  star: "M14.615,4.928c0.487-0.986,1.284-0.986,1.771,0l2.249,4.554c0.486,0.986,1.775,1.923,2.864,2.081l5.024,0.73c1.089,0.158,1.335,0.916,0.547,1.684l-3.636,3.544c-0.788,0.769-1.28,2.283-1.095,3.368l0.859,5.004c0.186,1.085-0.459,1.553-1.433,1.041l-4.495-2.363c-0.974-0.512-2.567-0.512-3.541,0l-4.495,2.363c-0.974,0.512-1.618,0.044-1.432-1.041l0.858-5.004c0.186-1.085-0.307-2.6-1.094-3.368L3.93,13.977c-0.788-0.768-0.542-1.525,0.547-1.684l5.026-0.73c1.088-0.158,2.377-1.095,2.864-2.081L14.615,4.928z",
  apple: "M24.32,10.85c-1.743,1.233-2.615,2.719-2.615,4.455c0,2.079,1.078,3.673,3.232,4.786c-0.578,1.677-1.416,3.134-2.514,4.375c-1.097,1.241-2.098,1.862-3.004,1.862c-0.427,0-1.009-0.143-1.748-0.423l-0.354-0.138c-0.725-0.281-1.363-0.423-1.92-0.423c-0.525,0-1.1,0.11-1.725,0.331l-0.445,0.16l-0.56,0.229c-0.441,0.176-0.888,0.264-1.337,0.264c-1.059,0-2.228-0.872-3.507-2.616c-1.843-2.498-2.764-5.221-2.764-8.167c0-2.095,0.574-3.781,1.725-5.061c1.149-1.279,2.673-1.92,4.568-1.92c0.709,0,1.371,0.13,1.988,0.389l0.423,0.172l0.445,0.183c0.396,0.167,0.716,0.251,0.959,0.251c0.312,0,0.659-0.072,1.04-0.217l0.582-0.229l0.435-0.16c0.693-0.251,1.459-0.377,2.297-0.377C21.512,8.576,23.109,9.334,24.32,10.85zM19.615,3.287c0.021,0.267,0.033,0.473,0.033,0.617c0,1.317-0.479,2.473-1.438,3.467s-2.075,1.49-3.347,1.49c-0.038-0.297-0.058-0.51-0.058-0.639c0-1.12,0.445-2.171,1.337-3.153c0.891-0.982,1.922-1.558,3.096-1.725C19.32,3.329,19.447,3.311,19.615,3.287z",
  glasses: "M14.075,9.531c0,0-2.705-1.438-5.158-1.438c-2.453,0-4.862,0.593-4.862,0.593L3.971,9.869c0,0,0.19,0.19,0.528,0.53c0.338,0.336,0.486,3.741,1.838,5.094c1.353,1.354,4.82,1.396,5.963,0.676c1.14-0.718,2.241-3.466,2.241-4.693c0-0.38,0-0.676,0-0.676c0.274-0.275,1.615-0.303,1.917,0c0,0,0,0.296,0,0.676c0,1.227,1.101,3.975,2.241,4.693c1.144,0.72,4.611,0.678,5.963-0.676c1.355-1.353,1.501-4.757,1.839-5.094c0.338-0.34,0.528-0.53,0.528-0.53l-0.084-1.183c0,0-2.408-0.593-4.862-0.593c-2.453,0-5.158,1.438-5.158,1.438C16.319,9.292,14.737,9.32,14.075,9.531z"
};
var groupLogo = {
  1: logos.star,
  2: logos.apple
}

var width = 960,
    height = 500;

var color = d3.scale.category20();

var force = d3.layout.force()
    .charge(-120)
    .linkDistance(30)
    .size([width, height]);

var svg = d3.select("body").append("svg")
    .attr("width", width)
    .attr("height", height);

d3.json("miserables.json", function(error, graph) {
  force
      .nodes(graph.nodes)
      .links(graph.links)
      .start();

var link = svg.selectAll(".link")
      .data(graph.links)
    .enter().append("line")
      .attr("class", "link")
      .style("stroke-width", function(d) { return Math.sqrt(d.value); });

var node = svg.selectAll(".node")
      .data(graph.nodes)
    .enter().append("g")
      .attr("class", "node")
      .call(force.drag);

node.append("path")
      .attr("d", function(d) {
        if (d.group in groupLogo) return groupLogo[d.group];
        return logos.glasses;
      })
      .attr("transform", "scale(0.75)")
      .style("fill", function(d) { return color(d.group); });

node.append("title")
      .text(function(d) { return d.name; });

force.on("tick", function() {
    link.attr("x1", function(d) { return d.source.x; })
        .attr("y1", function(d) { return d.source.y; })
        .attr("x2", function(d) { return d.target.x; })
        .attr("y2", function(d) { return d.target.y; });

node.attr("transform", function(d) { return "translate(" + (d.x-12) + "," + (d.y-12) + ")"; });
  });
});

</script>

Modified http://d3js.org/d3.v3.min.js to a secure url

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