Swiss Cantons by mbostock

index.html

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

.canton {
  fill: #bbb;
}

.canton-boundary {
  fill: none;
  stroke: #fff;
  stroke-linejoin: round;
}

text {
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: 10px;
  text-anchor: middle;
}

</style>
<body>
<script src="//d3js.org/d3.v3.min.js"></script>
<script src="//d3js.org/topojson.v1.min.js"></script>
<script>

var width = 960,
    height = 600;

var projection = d3.geo.albers()
    .rotate([0, 0])
    .center([8.3, 46.8])
    .scale(16000)
    .translate([width / 2, height / 2])
    .precision(.1);

var path = d3.geo.path()
    .projection(projection);

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

d3.json("readme-swiss.json", function(error, swiss) {
  if (error) throw error;

  var cantons = topojson.feature(swiss, swiss.objects.cantons);

  svg.append("path")
      .datum(cantons)
      .attr("class", "canton")
      .attr("d", path);

  svg.append("path")
      .datum(topojson.mesh(swiss, swiss.objects.cantons, function(a, b) { return a !== b; }))
      .attr("class", "canton-boundary")
      .attr("d", path);

  svg.selectAll("text")
      .data(cantons.features)
    .enter().append("text")
      .attr("transform", function(d) { return "translate(" + path.centroid(d) + ")"; })
      .attr("dy", ".35em")
      .text(function(d) { return d.properties.name; });
});

</script>