D3 Examples - NYC Boroughs in d3

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<!DOCTYPE html>
<meta charset="utf-8">
​
<style>
#boroughs {
  stroke: grey;
    stroke-width: 2px;
    fill: steelblue;
}
</style>
​
<script src="https://d3js.org/d3.v3.min.js" charset="utf-8"></script>
​
<body>
​
<script>
​
var width = 960,
   height = 500;
​
var svg = d3.select("body").append("svg")
    .attr("width", width)
    .attr("height", height);
​
  d3.json("nyc.json", function(error, nyb) {
​
    console.log(nyb)
​
    var projection = d3.geo.mercator()
                    .center([-73.94, 40.70])
                    .scale(50000)
                    .translate([(width) / 2, (height)/2]);
​
    var path = d3.geo.path()
            .projection(projection);
​
    var g = svg.append("g");
​
    g.append("g")
        .attr("id", "boroughs")
        .selectAll(".state")
        .data(nyb.features)
        .enter().append("path")
        .attr("class", function(d){ return d.properties.name; })
        .attr("d", path);
​
    });
​
</script>
</body>
</html>
    