A display of US median age by county using the census.ide.org API.
Created
October 9, 2012 05:42
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US Median Age by County
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta http-equiv="Content-Type" content="text/html;charset=utf-8"/> | |
| <script type="text/javascript" src="http://d3js.org/d3.v2.js"></script> | |
| <script type="text/javascript" src="https://raw.github.com/IntoMethod/Lightweight-JSONP/master/jsonp.js"></script> | |
| <link type="text/css" rel="stylesheet" href="http://mbostock.github.com/d3/talk/20111018/colorbrewer/colorbrewer.css"/> | |
| <style type="text/css"> | |
| #counties path { | |
| stroke: #fff; | |
| stroke-width: .25px; | |
| } | |
| #states path { | |
| fill: none; | |
| stroke: #fff; | |
| stroke-width: 1.5px; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <div id="body"> | |
| <div id="footer"> | |
| U.S. Unemployment, 2008 | |
| <div class="hint">use the menu to change the color scale</div> | |
| <div><select> | |
| <optgroup label="Colors by Cynthia Brewer."> | |
| <option value="YlGn">YlGn</option> | |
| <option value="YlGnBu">YlGnBu</option> | |
| <option value="GnBu">GnBu</option> | |
| <option value="BuGn">BuGn</option> | |
| <option value="PuBuGn">PuBuGn</option> | |
| <option value="PuBu">PuBu</option> | |
| <option value="BuPu">BuPu</option> | |
| <option value="RdPu">RdPu</option> | |
| <option value="PuRd">PuRd</option> | |
| <option value="OrRd">OrRd</option> | |
| <option value="YlOrRd">YlOrRd</option> | |
| <option value="YlOrBr">YlOrBr</option> | |
| <option value="Purples">Purples</option> | |
| <option value="Blues" selected>Blues</option> | |
| <option value="Greens">Greens</option> | |
| <option value="Oranges">Oranges</option> | |
| <option value="Reds">Reds</option> | |
| <option value="Greys">Greys</option> | |
| </optgroup> | |
| </select></div> | |
| </div> | |
| </div> | |
| <script type="text/javascript"> | |
| var path = d3.geo.path() | |
| .projection(d3.geo.albersUsa() | |
| .scale(1400) | |
| .translate([680, 360])); | |
| var svg = d3.select("#body").append("svg:svg") | |
| .attr("class", "Blues") | |
| .attr("width", 1280) | |
| .attr("height", 800); | |
| var counties = svg.append("svg:g") | |
| .attr("id", "counties"); | |
| var states = svg.append("svg:g") | |
| .attr("id", "states"); | |
| d3.json("us-counties.json", function(json) { | |
| var pad = d3.format("05d"), | |
| // quantize = d3.scale.quantile().domain([0, 15]).range(d3.range(9)), | |
| quantize = d3.scale.quantile().domain([20, 60]).range(d3.range(9)), | |
| queue = json.features.slice(0).map(function (feature) { return pad(feature.id) }).sort(), | |
| features = []; | |
| // http://arf.hrsa.gov/indep.htm 02201 Defunct as of 5/19/08 | |
| var defunct = [ "02201", "02232", "02280" ]; | |
| queue = queue.filter(function (feature) { return defunct.indexOf(feature) == -1 }); | |
| function obtained (data) { | |
| features = features.concat(json.features.filter(function (feature) { return data[pad(feature.id)] })); | |
| counties.selectAll("path") | |
| .data(features) | |
| .enter().append("svg:path") | |
| .attr("class", function(d) { return "q" + quantize(data[pad(d.id)].data[2010]["P13"]["P013001"]) + "-9"; }) | |
| .attr("d", path) | |
| .append("svg:title") | |
| .text(function(d) { return d.properties.name + ": " + data[pad(d.id)].data[2010]["P13"]["P013001"] + ""; }); | |
| if (queue.length) obtain(); | |
| else alert("done"); | |
| } | |
| function obtain () { | |
| var range = queue.splice(0, 90), | |
| params = { url: "http://census.ire.org/data/" + range.join(",") + ".json?tables=P13" }; | |
| console.log(range); | |
| JSONP.get("http://census.prettyrobots.com/", params, obtained, "jsonp"); | |
| } | |
| //obtain(); | |
| alert('loaded'); | |
| }); | |
| d3.json("us-states.json", function(json) { | |
| states.selectAll("path") | |
| .data(json.features) | |
| .enter().append("svg:path") | |
| .attr("d", path); | |
| }); | |
| d3.select("select").on("change", function() { | |
| d3.selectAll("svg").attr("class", this.value); | |
| }); | |
| </script> | |
| </body> | |
| </html> |
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