|
| 1 | +<!DOCTYPE html> |
| 2 | +<html> |
| 3 | + <head> |
| 4 | + <title>Force-Directed Layout</title> |
| 5 | + <script type="text/javascript" src="http://mbostock.github.com/d3/d3.js?1.29.1"></script> |
| 6 | + <script type="text/javascript" src="http://mbostock.github.com/d3/d3.geom.js?1.29.1"></script> |
| 7 | + <script type="text/javascript" src="http://mbostock.github.com/d3/d3.layout.js?1.29.1"></script> |
| 8 | + <style type="text/css"> |
| 9 | + |
| 10 | +circle { |
| 11 | + stroke-width: 1.5px; |
| 12 | +} |
| 13 | + |
| 14 | +line { |
| 15 | + stroke: #999; |
| 16 | +} |
| 17 | + |
| 18 | + </style> |
| 19 | + </head> |
| 20 | + <body> |
| 21 | + <script type="text/javascript"> |
| 22 | + |
| 23 | +var w = 960, |
| 24 | + h = 500, |
| 25 | + r = 6, |
| 26 | + fill = d3.scale.category20(); |
| 27 | + |
| 28 | +var force = d3.layout.force() |
| 29 | + .gravity(.01) |
| 30 | + .charge(-120) |
| 31 | + .linkDistance(30) |
| 32 | + .size([w, h]); |
| 33 | + |
| 34 | +var svg = d3.select("body").append("svg:svg") |
| 35 | + .attr("width", w) |
| 36 | + .attr("height", h); |
| 37 | + |
| 38 | +d3.json("miserables.json", function(json) { |
| 39 | + var link = svg.selectAll("line") |
| 40 | + .data(json.links) |
| 41 | + .enter().append("svg:line"); |
| 42 | + |
| 43 | + var node = svg.selectAll("circle") |
| 44 | + .data(json.nodes) |
| 45 | + .enter().append("svg:circle") |
| 46 | + .attr("r", r - .75) |
| 47 | + .style("fill", function(d) { return fill(d.group); }) |
| 48 | + .style("stroke", function(d) { return d3.rgb(fill(d.group)).darker(); }) |
| 49 | + .call(force.drag); |
| 50 | + |
| 51 | + force |
| 52 | + .nodes(json.nodes) |
| 53 | + .links(json.links) |
| 54 | + .on("tick", tick) |
| 55 | + .start(); |
| 56 | + |
| 57 | + function tick() { |
| 58 | + node.attr("cx", function(d) { return d.x = Math.max(r, Math.min(w - r, d.x)); }) |
| 59 | + .attr("cy", function(d) { return d.y = Math.max(r, Math.min(h - r, d.y)); }); |
| 60 | + |
| 61 | + link.attr("x1", function(d) { return d.source.x; }) |
| 62 | + .attr("y1", function(d) { return d.source.y; }) |
| 63 | + .attr("x2", function(d) { return d.target.x; }) |
| 64 | + .attr("y2", function(d) { return d.target.y; }); |
| 65 | + } |
| 66 | +}); |
| 67 | + |
| 68 | + </script> |
| 69 | + </body> |
| 70 | +</html> |
0 commit comments