rveciana - d3-tutorial-ii-setting-projection

D3 tutorial II: Setting projection

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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

<!DOCTYPE html>
<meta charset="utf-8">

.states {
  fill: #ccc;
  stroke: #fff;
<script src="http://d3js.org/d3.v3.min.js"></script>
<script src="http://d3js.org/topojson.v0.min.js"></script>

var width = 960,
    height = 500;

var projection = d3.geo.mercator()
    .scale(4000 / 2 / Math.PI)
    .translate([width / 2, height / 2]);

var path = d3.geo.path()

var svg = d3.select("body").append("svg")
    .attr("width", width)
    .attr("height", height);

d3.json("/mbostock/raw/4090846/us.json", function(error, us) {
      .attr("class", "states")
      .datum(topojson.object(us, us.objects.states))
      .attr("d", path);