D3 Examples - Vector Tiles

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<!DOCTYPE html>
<meta charset="utf-8">
<style>
​
body {
  margin: 0;
}
​
path {
  fill: none;
  stroke: #000;
  stroke-linejoin: round;
  stroke-linecap: round;
}
​
.major_road { stroke: #776; }
.minor_road { stroke: #ccb; }
.highway { stroke: #f39; stroke-width: 1.5px; }
.rail { stroke: #7de; }
​
</style>
<body>
<script src="//d3js.org/d3.v3.min.js"></script>
<script src="d3.geo.tile.min.js"></script>
<script>
​
var width = Math.max(960, window.innerWidth),
    height = Math.max(500, window.innerHeight);
​
var tiler = d3.geo.tile()
    .size([width, height]);
​
var projection = d3.geo.mercator()
    .center([-122.4183, 37.7750])
    .scale((1 << 21) / 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);
​
svg.selectAll("g")
    .data(tiler
      .scale(projection.scale() * 2 * Math.PI)
      .translate(projection([0, 0])))
  .enter().append("g")
    .each(function(d) {
      var g = d3.select(this);
      d3.json("https://vector.mapzen.com/osm/roads/" + d[2] + "/" + d[0] + "/" + d[1] + ".json?api_key=vector-tiles-LM25tq4", function(error, json) {
        if (error) throw error;
​
        g.selectAll("path")
          .data(json.features.sort(function(a, b) { return a.properties.sort_key - b.properties.sort_key; }))
        .enter().append("path")
          .attr("class", function(d) { return d.properties.kind; })
          .attr("d", path);
      });
    });
​
</script>
​
    