Created
December 6, 2016 21:59
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california population per square mile
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| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <link href='https://fonts.googleapis.com/css?family=Cardo:400,400italic,700' rel='stylesheet' type='text/css'> | |
| <link href="https://fonts.googleapis.com/css?family=Bungee+Hairline" rel="stylesheet"> | |
| <style> | |
| body { | |
| background: #f5f5f5; | |
| } | |
| .caption { | |
| font-family: 'Cardo'; | |
| font-size: 18px; | |
| font-style: italic; | |
| font-weight: 400; | |
| } | |
| .tick { | |
| font-family: 'Cardo'; | |
| font-size: 18px; | |
| font-style: italic; | |
| font-weight: 400; | |
| } | |
| .counties { | |
| stroke: #fff; | |
| stroke-width: .25px; | |
| } | |
| .states { | |
| stroke: #fff; | |
| stroke-linejoin: round; | |
| } | |
| .axis { | |
| font-family: Futura; | |
| font-size: 11px; | |
| } | |
| </style> | |
| <svg width="960" height="1100"></svg> | |
| <script src="https://d3js.org/d3.v4.min.js"></script> | |
| <script src="https://d3js.org/d3-scale-chromatic.v1.min.js"></script> | |
| <script src="https://d3js.org/topojson.v2.min.js"></script> | |
| <script> | |
| // my style applied to a mbostock example: http://bl.ocks.org/mbostock/39b34968ad5eab65de1d7da81f78bb27 | |
| var svg = d3.select("svg"), | |
| width = +svg.attr("width"), | |
| height = +svg.attr("height"); | |
| var path = d3.geoPath(); | |
| var color = d3.scaleThreshold() | |
| .domain([1, 10, 50, 200, 500, 1000, 2000, 4000]) | |
| .range(d3.schemePuOr[9]); | |
| var x = d3.scaleSqrt() | |
| .domain([0, 4500]) | |
| .rangeRound([440, 950]); | |
| var g = svg.append("g") | |
| .attr("class", "key") | |
| .attr("transform", "translate(0,40)"); | |
| g.selectAll("rect") | |
| .data(color.range().map(function(d) { | |
| d = color.invertExtent(d); | |
| if (d[0] == null) d[0] = x.domain()[0]; | |
| if (d[1] == null) d[1] = x.domain()[1]; | |
| return d; | |
| })) | |
| .enter().append("rect") | |
| .attr("height", 8) | |
| .attr("x", function(d) { return x(d[0]); }) | |
| .attr("width", function(d) { return x(d[1]) - x(d[0]); }) | |
| .attr("fill", function(d) { return color(d[0]); }); | |
| g.append("text") | |
| .attr("class", "caption") | |
| .attr("x", x.range()[0]) | |
| .attr("y", -6) | |
| .attr("fill", "#000") | |
| .attr("text-anchor", "start") | |
| .text("Population per square mile"); | |
| g.call(d3.axisBottom(x) | |
| .tickSize(13) | |
| .tickValues(color.domain())) | |
| .select(".domain") | |
| .remove(); | |
| d3.json("topo.json", function(error, topology) { | |
| if (error) throw error; | |
| var defs = svg.append("defs"); | |
| //Filter for the outside glow | |
| var filter = defs.append("filter") | |
| .attr("id","glow"); | |
| filter.append("feGaussianBlur") | |
| .attr("stdDeviation","3.5") | |
| .attr("result","coloredBlur"); | |
| var feMerge = filter.append("feMerge"); | |
| feMerge.append("feMergeNode") | |
| .attr("in","coloredBlur"); | |
| feMerge.append("feMergeNode") | |
| .attr("in","SourceGraphic"); | |
| svg.append("g") | |
| .selectAll("path") | |
| .data(topojson.feature(topology, topology.objects.blockgroups).features) | |
| .enter().append("path") | |
| .attr("fill", function(d) { return d3.schemePuOr[9][d.id]; }) | |
| .attr("d", path); | |
| svg.append("path") | |
| .datum(topojson.feature(topology, topology.objects.counties)) | |
| .attr("fill", "none") | |
| .attr("stroke", "#000") | |
| .attr("stroke-width", ".25px") | |
| .attr("stroke-opacity", 0.3) | |
| .attr("d", path); | |
| d3.selectAll("path") | |
| .style("filter", "url(#glow)"); | |
| }); | |
| </script> |
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