This example belongs to the presentation made to the OSGeo local group in Barcelona Geoinquiets The example is an adaptation from Mike Bostock's Symbol Map example
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December 15, 2015 01:38
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D3 tutorial II: Setting projection
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<!DOCTYPE html> | |
<meta charset="utf-8"> | |
<style> | |
.states { | |
fill: #ccc; | |
stroke: #fff; | |
} | |
</style> | |
<body> | |
<script src="http://d3js.org/d3.v3.min.js"></script> | |
<script src="http://d3js.org/topojson.v0.min.js"></script> | |
<script> | |
var width = 960, | |
height = 500; | |
var projection = d3.geo.mercator() | |
.center([-97,37]) | |
.scale(4000 / 2 / Math.PI) | |
.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); | |
d3.json("/mbostock/raw/4090846/us.json", function(error, us) { | |
svg.append("path") | |
.attr("class", "states") | |
.datum(topojson.object(us, us.objects.states)) | |
.attr("d", path); | |
}); | |
</script> | |
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