Skip to content

Instantly share code, notes, and snippets.

@Fil
Last active Jun 25, 2016
Embed
What would you like to do?
U.S. States TopoJSON small multiples
license: gpl-3.0
<!DOCTYPE html>
<meta charset="utf-8">
<style>
.land {
fill: #222;
}
.county-boundary {
fill: none;
stroke: #fff;
stroke-width: .5px;
}
.state-boundary {
fill: none;
stroke: #fff;
}
</style>
<body>
<script src="//d3js.org/d3.v3.min.js"></script>
<script src="//d3js.org/topojson.v1.min.js"></script>
<script>
var width = 96,
height = 50;
var projection = d3.geo.albersUsa()
.scale(100)
.translate([width / 2, height / 2]);
var path = d3.geo.path()
.projection(projection);
d3.json("https://gist.githubusercontent.com/mbostock/4090846/raw/d534aba169207548a8a3d670c9c2cc719ff05c47/us.json", function(error, us) {
if (error) throw error;
var land = topojson.feature(us, us.objects.land),
land_path = path(land),
counties = topojson.mesh(us, us.objects.counties, function(a, b) { return a !== b && !(a.id / 1000 ^ b.id / 1000); }),
counties_path = path(counties),
states = topojson.mesh(us, us.objects.states, function(a, b) { return a !== b; })
states_path = path(states);
for (var i=1; i<=81; i++) {
console.log(i, new Date())
var svg = d3.select("body").append("svg")
.attr("width", width)
.attr("height", height);
svg.insert("path", ".graticule")
.datum(land)
.attr("class", "land")
.attr("d", land_path);
svg.insert("path", ".graticule")
.datum(counties)
.attr("class", "county-boundary")
.attr("d", counties_path);
svg.insert("path", ".graticule")
.datum(states)
.attr("class", "state-boundary")
.attr("d", states_path);
}
});
d3.select(self.frameElement).style("height", height + "px");
</script>
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment