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Last active July 19, 2019 19:44
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113th U.S. Congressional Districts
license: gpl-3.0
<!DOCTYPE html>
<meta charset="utf-8">
<style>
path {
stroke-linejoin: round;
stroke-linecap: round;
}
.districts {
fill: #bbb;
}
.districts :hover {
fill: orange;
}
.district-boundaries {
pointer-events: none;
fill: none;
stroke: #fff;
stroke-width: .5px;
}
.state-boundaries {
pointer-events: none;
fill: none;
stroke: #fff;
stroke-width: 1.5px;
}
</style>
<body>
<script src="//d3js.org/d3.v3.min.js"></script>
<script src="//d3js.org/queue.v1.min.js"></script>
<script src="//d3js.org/topojson.v1.min.js"></script>
<script>
var width = 960,
height = 600;
var projection = d3.geo.albersUsa()
.scale(1280)
.translate([width / 2, height / 2]);
var path = d3.geo.path()
.projection(projection);
var svg = d3.select("body").append("svg")
.attr("width", width)
.attr("height", height);
queue()
.defer(d3.json, "/mbostock/raw/4090846/us.json")
.defer(d3.json, "/mbostock/raw/4090846/us-congress-113.json")
.await(ready);
function ready(error, us, congress) {
if (error) throw error;
svg.append("defs").append("path")
.attr("id", "land")
.datum(topojson.feature(us, us.objects.land))
.attr("d", path);
svg.append("clipPath")
.attr("id", "clip-land")
.append("use")
.attr("xlink:href", "#land");
svg.append("g")
.attr("class", "districts")
.attr("clip-path", "url(#clip-land)")
.selectAll("path")
.data(topojson.feature(congress, congress.objects.districts).features)
.enter().append("path")
.attr("d", path)
.append("title")
.text(function(d) { return d.id; });
svg.append("path")
.attr("class", "district-boundaries")
.datum(topojson.mesh(congress, congress.objects.districts, function(a, b) { return a !== b && (a.id / 1000 | 0) === (b.id / 1000 | 0); }))
.attr("d", path);
svg.append("path")
.attr("class", "state-boundaries")
.datum(topojson.mesh(us, us.objects.states, function(a, b) { return a !== b; }))
.attr("d", path);
}
d3.select(self.frameElement).style("height", height + "px");
</script>
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