pierrelorioux/index.html

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

.tract {
  fill: #eee;
}

.tract-border {
  fill: none;
  stroke: #333;
}

.state-border {
  fill: none;
  stroke: #333;
}

</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 = 1200;

var projection = d3.geo.mercator()
    .rotate([74 + 30 / 60, -38 - 50 / 60, 90]);

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

var svg = d3.select("body").append("svg")
    .attr("width", width)
    .attr("height", height)
  .append("g")
    .attr("transform", "rotate(90 " + width / 2 + "," + height / 2 + ")");

d3.json("nj-tracts.json", function(error, nj) {
  var tracts = topojson.object(nj, nj.objects.tracts);

  projection
      .scale(1)
      .translate([0, 0]);

  var b = path.bounds(tracts),
      s = .95 / Math.max((b[1][0] - b[0][0]) / height, (b[1][1] - b[0][1]) / width),
      t = [(width - s * (b[1][0] + b[0][0])) / 2, (height - s * (b[1][1] + b[0][1])) / 2];

  projection
      .scale(s)
      .translate(t);

  svg.append("path")
      .datum({type: "GeometryCollection", geometries: tracts.geometries.filter(function(d) { return (d.id / 10000 | 0) % 100 !== 99; })})
      .attr("class", "tract")
      .attr("d", path);

  svg.append("path")
      .datum(topojson.mesh(nj, nj.objects.tracts, function(a, b) { return a !== b; }))
      .attr("class", "tract-border")
      .attr("d", path);

  svg.append("path")
      .datum(topojson.mesh(nj, nj.objects.tracts, function(a, b) { return a === b; }))
      .attr("class", "state-border")
      .attr("d", path);
});

d3.select(self.frameElement).style("height", height + "px");

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

	.tract {
	fill: #eee;
	}

	.tract-border {
	fill: none;
	stroke: #333;
	}

	.state-border {
	fill: none;
	stroke: #333;
	}

	</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 = 1200;

	var projection = d3.geo.mercator()
	.rotate([74 + 30 / 60, -38 - 50 / 60, 90]);

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

	var svg = d3.select("body").append("svg")
	.attr("width", width)
	.attr("height", height)
	.append("g")
	.attr("transform", "rotate(90 " + width / 2 + "," + height / 2 + ")");

	d3.json("nj-tracts.json", function(error, nj) {
	var tracts = topojson.object(nj, nj.objects.tracts);

	projection
	.scale(1)
	.translate([0, 0]);

	var b = path.bounds(tracts),
	s = .95 / Math.max((b[1][0] - b[0][0]) / height, (b[1][1] - b[0][1]) / width),
	t = [(width - s * (b[1][0] + b[0][0])) / 2, (height - s * (b[1][1] + b[0][1])) / 2];

	projection
	.scale(s)
	.translate(t);

	svg.append("path")
	.datum({type: "GeometryCollection", geometries: tracts.geometries.filter(function(d) { return (d.id / 10000 \| 0) % 100 !== 99; })})
	.attr("class", "tract")
	.attr("d", path);

	svg.append("path")
	.datum(topojson.mesh(nj, nj.objects.tracts, function(a, b) { return a !== b; }))
	.attr("class", "tract-border")
	.attr("d", path);

	svg.append("path")
	.datum(topojson.mesh(nj, nj.objects.tracts, function(a, b) { return a === b; }))
	.attr("class", "state-border")
	.attr("d", path);
	});

	d3.select(self.frameElement).style("height", height + "px");

	</script>
	</body>
	</html>