Very simple start to map using data from the SF Planning commission to make a map with d3. One problem was there was a little of Alameda in the Data so I cleaned that out and made it a little more web mapping friendly.
Use this or make your own maps from the source data http://www.sfgov2.org/index.aspx?page=2618 to help people better contextualize SF Politics.
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>D3: Mercator projection applied to stuff</title>
<script src="//d3js.org/d3.v3.min.js"></script>
<script src="//d3js.org/topojson.v1.min.js"></script>
<style type="text/css">
/* No style rules here yet */
</style>
</head>
<body>
<script type="text/javascript">
//Width and height
var w = 500;
var h = 300;
//Define map projection
var projection = d3.geo.mercator()
.translate([w/2, h/2])
.scale([78900])
.center([ -122.43198394775389,37.76365837331252])
;
//Define path generator
var path = d3.geo.path()
.projection(projection);
//Create SVG element
var svg = d3.select("body")
.append("svg")
.attr("width", w)
.attr("height", h);
//Load in GeoJSON data
d3.json("sfBOScle.geojson", function(json) {
//Bind data and create one path per GeoJSON feature
svg.selectAll("path")
.data(json.features)
.enter()
.append("path")
.attr("d", path)
.style("fill", "purple");
console.dir(json.features)
});
</script>
</body>
</html>