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New York Census Tracts
license: gpl-3.0
.DS_Store
build
node_modules
<!DOCTYPE html>
<meta charset="utf-8">
<style>
.tract {
fill: #ccc;
}
.tract:hover {
fill: orange;
}
.tract-border {
fill: none;
stroke: #333;
stroke-linejoin: round;
stroke-linecap: round;
}
</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 = 700;
var path = d3.geo.path()
.projection(null);
var svg = d3.select("body").append("svg")
.attr("width", width)
.attr("height", height);
d3.json("ny.json", function(error, ny) {
if (error) throw error;
var tracts = ny.objects.tracts;
// strip water counties
tracts.geometries = tracts.geometries
.filter(function(d) { return (d.id / 10000 | 0) !== 99; });
svg.append("g")
.selectAll("path")
.data(topojson.feature(ny, tracts).features)
.enter().append("path")
.attr("class", "tract")
.attr("d", path)
.append("title")
.text(function(d, i) { return d.id; });
svg.append("path")
.attr("class", "tract-border")
.datum(topojson.mesh(ny, tracts, function(a, b) { return a !== b; }))
.attr("d", path);
});
d3.select(self.frameElement).style("height", height + "px");
</script>
GENERATED_FILES = \
ny.json
all: $(GENERATED_FILES)
.PHONY: clean all
clean:
rm -rf -- $(GENERATED_FILES) build
build/tl_2012_%_tract.zip:
mkdir build
curl -o $@ 'http://www2.census.gov/geo/tiger/TIGER2012/TRACT/$(notdir $@)'
build/tracts.shp: build/tl_2012_36_tract.zip
rm -rf $(basename $@)
mkdir -p $(basename $@)
unzip -d $(basename $@) $<
for file in $(basename $@)/*; do chmod 644 $$file; mv $$file $(basename $@).$${file##*.}; done
rmdir $(basename $@)
touch $@
ny.json: build/tracts.shp
node_modules/.bin/topojson -o $@ --q0=0 --simplify=1 --projection='d3.geo.mercator().center([-75.819, 42.795]).scale(6193).translate([480, 350]).precision(0)' --id-property=TRACTCE -- $(filter %.shp,$^)
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{
"name": "anonymous",
"version": "0.0.1",
"private": true,
"devDependencies": {
"d3": "3",
"topojson": "1"
}
}
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