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@darrenjaworski
Last active August 29, 2015 14:07
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Mercator - OK school districts
<!DOCTYPE html>
<meta charset="utf-8">
<style>
.schooldistrict {
fill: #eee;
stroke: #777;
}
.schooldistrict:hover {
fill: steelblue;
}
</style>
<body>
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
<script src="http://d3js.org/d3.v3.min.js"></script>
<script src="http://d3js.org/topojson.v1.min.js"></script>
<script>
( function map() {
var width = $(window).width(), height = width/2;
var projection = d3.geo.transverseMercator()
.rotate([98 + 00 / 60, -35 + 00 / 60]) //http://www.ngs.noaa.gov/PUBS_LIB/ManualNOSNGS5.pdf
.scale(1)
.translate([0,0]);
var path = d3.geo.path()
.projection(projection);
var svg = d3.select("body")
.append("svg")
.attr("width", width)
.attr("height", height);
d3.json("schooldistricts.json", function(error, topo) {
var schooldistrict = topojson.feature(topo, topo.objects.sdtax);
var b = path.bounds(schooldistrict),
s = .95 / Math.max((b[1][0] - b[0][0]) / width, (b[1][1] - b[0][1]) / height),
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("g")
.attr("class", "schooldistrict")
.selectAll("path")
.data(schooldistrict.features)
.enter()
.append("path")
.attr("class", "schooldistrict")
.attr("d", path)
.append("title")
.text(function(d)
{
return d.properties.name;
});
});
}) ()
</script>
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