Skip to content

Instantly share code, notes, and snippets.

@piwodlaiwo

piwodlaiwo/.block

Created March 4, 2018 04:06
Show Gist options
  • Save piwodlaiwo/8283bebe2ad96c0904ef3c8f0bf3a489 to your computer and use it in GitHub Desktop.
Save piwodlaiwo/8283bebe2ad96c0904ef3c8f0bf3a489 to your computer and use it in GitHub Desktop.
Download ZIP
Map of Spain with GitHub TopoJSON
Raw
.block
license: mit
Raw
README.md
Raw
index.html
<!DOCTYPE html>
<meta charset="utf-8">
<style>
body { margin:0;position:fixed;top:0;right:0;bottom:0;left:0; }
svg { width:100%; height: 100% }
</style>
<body>
<script src="https://unpkg.com/d3@4"></script>
<script src="https://unpkg.com/topojson-client@3"></script>
<script>
var width = 900;
var height = 500;
var svg = d3.select("body").append("svg");
var projection = d3.geoMercator();
projection.scale(1).translate([0, 0]);
var path = d3.geoPath().projection(projection);
d3.json("https://raw.githubusercontent.com/piwodlaiwo/TopoJSON-Data/master/diva-gis/ESP_adm/ESP_adm1.topo.json", function(error, topo) {
if (error) throw error;
var spain = topojson.feature(topo, topo.objects.states);
var spain_features = spain.features;
//Find Spain bounds relative to height and width
var b = path.bounds(spain),
s = .95 / Math.max((b[1][0] - b[0][0]) / width, (b[1][1] - b[0][1]) / height),
t = [(width - s * (b[1][0] + b[0][0])) / 2, (height - s * (b[1][1] + b[0][1])) / 2];
//zoom to Spain from World Mercator Projection
projection.scale(s).translate(t);
svg.selectAll("path")
.data(spain_features)
.enter().append("path")
.attr("d", path);
});
</script>
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment