On Github joelotz / unique
...in 150 characters
Created by @LotzJoe / joelotz@gmail.com
var width = 780, height = 450; 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("/js/data.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("circle") .attr("class", "node") .attr("r", 5) .style("fill", function(d) { return color(d.group); }) .call(force.drag); 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("cx", function(d) { return d.x; }) .attr("cy", function(d) { return d.y; }); }); });