Labeled Force Layout

A force-directed graph using images as nodes, with accompanying text labels.

forked from mbostock's block: Labeled Force Layout

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

.link {
  stroke: #ccc;
}

.node text {
  pointer-events: none;
  font: 10px sans-serif;
}

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

var width = 1800,
    height = 1800;

function zoomed() {
  container.attr("transform", "translate(" + d3.event.translate + ")scale(" + d3.event.scale + ")");
}

function dragstarted(d) {
  d3.event.sourceEvent.stopPropagation();
  d3.select(this).classed("dragging", true);
}

function dragged(d) {
  d3.select(this).attr("cx", d.x = d3.event.x).attr("cy", d.y = d3.event.y);
}

function dragended(d) {
  d3.select(this).classed("dragging", false);
}

var zoom = d3.behavior.zoom()
    .scaleExtent([1, 10])
    .on("zoom", zoomed);

var drag = d3.behavior.drag()
    .origin(function(d) { return d; })
    .on("dragstart", dragstarted)
    .on("drag", dragged)
    .on("dragend", dragended);
  
var color = d3.scale.category20c();
  
var svg = d3.select("body").append("svg")
    .attr("width", width)
    .attr("height", height);

var force = d3.layout.force()
    .gravity(0.05)
    .distance(100)
    .charge(-50)
    .size([width, height]);

d3.json("graph.json", function(error, json) {
  if (error) throw error;

force
      .nodes(json.nodes)
      .links(json.links)
      .start();

var link = svg.selectAll(".link")
      .data(json.links)
    .enter().append("line")
      .attr("class", "link");

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

node.append("circle")
      .attr("r", 3)
      .style("fill", function(d) { console.log('d: ', d); return color(d.group); });;

node.append("text")
      .attr("dx", 12)
      .attr("dy", ".35em")
      .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 + "," + d.y + ")"; });
  });
});

</script>

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