Creates a d3-voronoi diagram for a couple of random coordinates. The color of the polygons is defined by a continuous color scheme based on ColorBrewer using d3-scale-chromatic.
Example in D3 v4.0
Last active
June 28, 2016 14:08
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Voroni & Chromatic Scale
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| <script src="https://d3js.org/d3.v4.0.0-rc.2.min.js"></script> | |
| <script src="https://d3js.org/d3-color.v0.5.min.js"></script> | |
| <script src="https://d3js.org/d3-interpolate.v0.9.min.js"></script> | |
| <script src="https://d3js.org/d3-scale-chromatic.v0.3.min.js"></script> | |
| <div id="viz"></div> | |
| <script> | |
| var width = 960, | |
| height = 500; | |
| var svg = d3.select('#viz').append('svg') | |
| .attr('width',width) | |
| .attr('height',height); | |
| var n = 2000; | |
| var data = d3.range(n).map(function() { return d3.range(2).map(Math.random) }); | |
| var voronoi = d3.voronoi() | |
| .x(function(d) {return d[0]*width}) | |
| .y(function(d) {return d[1]*height}) | |
| .size([width, height]); | |
| var pointareas = svg.selectAll('areas') | |
| .data(voronoi.polygons(data)) | |
| .enter().append('path') | |
| .attr('d', function(d) { return "M" + d.join("L") + "Z"; }) | |
| .style('fill', function(d) { | |
| return d3.interpolateRdYlBu(d.data[0])}); | |
| pointareas.on("mouseover", function(d,i ) { | |
| pointareas | |
| .style('fill', function(p) { | |
| dist = Math.sqrt(Math.pow((d.data[0] - p.data [0]),2) + Math.pow((d.data[1] - p.data [1]),2)) | |
| return d3.interpolateRdYlBu(dist) | |
| }); | |
| }) | |
| </script> |
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