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<!DOCTYPE HTML> |
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<body> |
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<script src="http://d3js.org/d3.v4.js"></script> |
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<script src="http://d3js.org/topojson.v1.min.js"></script> |
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<style> |
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.bubble { |
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fill: rgb(52, 157, 82); |
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fill-opacity: .5; |
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stroke: rgb(52, 157, 82); |
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stroke-width: .5px; |
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} |
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.bubble :hover { |
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stroke: rgb(0, 68, 27); |
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} |
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.states { |
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stroke: #fff; |
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fill: none; |
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stroke-linejoin: round; |
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} |
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.land { |
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fill: #ddd; |
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} |
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.toolTip { |
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position: absolute; |
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display: none; |
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max-width: 300px; |
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height: auto; |
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background-color: rgba(1,1,1,.7); |
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border: 1px solid #111; |
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padding:3px 8px; |
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text-align: center; |
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font-size:11px; |
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color:#fff; |
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font-family:Arial,sans-serif; |
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line-height:1.4em; |
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border-radius:3px; |
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} |
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.toolTip .county { |
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color:#ddd; |
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} |
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</style> |
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<script> |
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var width = 960, |
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height = 600; |
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var path = d3.geoPath(); |
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var radius = d3.scaleSqrt() |
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.domain([0, 1]) |
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.range([0, 5]); |
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var svg = d3.select("body").append("svg") |
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.attr("width", width) |
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.attr("height", height); |
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var tooltip = d3.select("body").append("div").attr("class", "toolTip"); |
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var countyIds = d3.map(); |
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var format = d3.format(".2"); |
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d3.queue() |
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.defer(d3.json, "us.json") |
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.defer(d3.csv, "county-counts.csv") |
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.await(ready); |
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function ready(error, s, c) { |
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if (error) { console.log(error) } |
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topojson.feature(s, s.objects.counties).features.forEach(function(d, i) { |
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countyIds.set(d.id, d); |
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}); |
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svg.append("path") |
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.datum(topojson.feature(s, s.objects.nation)) |
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.attr("class", "land") |
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.attr("d", path); |
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svg.append("path") |
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.datum(topojson.mesh(s, s.objects.states, function(a, b) { return a !== b; })) |
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.attr("class", "states") |
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.attr("d", path); |
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svg.append("g") |
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.attr("class", "bubble") |
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.selectAll("circle") |
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.data(c |
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.filter(function(d) {return countyIds.has(d.county)}) |
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.sort(function(a, b) { return b.count - a.count; }) |
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) |
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.enter().append("circle") |
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.attr("transform", function(d) { return "translate(" + path.centroid(countyIds.get(d.county)) + ")"; }) |
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.attr("r", function(d) { return radius(d.count/countyIds.get(d.county).properties.population*100000); }) |
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.on("mousemove", function(d){ |
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tooltip |
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.style("left", path.centroid(countyIds.get(d.county))[0] -55 + "px") |
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.style("top", d3.event.pageY - 70 + "px") |
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.style("display", "inline-block") |
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.html( "<span class='county'>" + |
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countyIds.get(d.county).properties.name + |
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"</span></br>" + d.count + " Fertility Clinics </br>" + |
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format(d.count/countyIds.get(d.county).properties.population*100000) + " per 100,000 people"); |
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}) |
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.on("mouseout", function(d){ tooltip.style("display", "none");}); |
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} |
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</script> |
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</body> |
