Created
January 14, 2014 17:48
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| <!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="utf-8"> | |
| <title>d3: NYC Tract</title> | |
| <script src="http://d3js.org/d3.v3.min.js"></script> | |
| <script src="http://labratrevenge.com/d3-tip/javascripts/d3.tip.min.js"></script> | |
| <style type="text/css"> | |
| .d3-tip { | |
| line-height: 1; | |
| font-weight: bold; | |
| padding: 12px; | |
| background: rgba(224, 228, 235, .9); | |
| font: 12px sans-serif; | |
| color: black; | |
| border-radius: 2px; | |
| } | |
| /* Creates a small triangle extender for the tooltip */ | |
| .d3-tip:after { | |
| box-sizing: border-box; | |
| display: inline; | |
| font-size: 10px; | |
| width: 100%; | |
| line-height: 1; | |
| color: rgba(224, 228, 235, .9); | |
| content: "\25BC"; | |
| position: absolute; | |
| text-align: center; | |
| } | |
| /* Style northward tooltips differently */ | |
| .d3-tip.n:after { | |
| margin: -1px 0 0 0; | |
| top: 100%; | |
| left: 0; | |
| } | |
| .canvas{ | |
| border: 2px solid black; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <script type="text/javascript"> | |
| //Width and height | |
| var margin = {top: 45, right: 20, bottom: 50, left: 20}, | |
| w = 1000 - margin.left - margin.right, | |
| h = 750 - margin.top - margin.bottom; | |
| //Map projection | |
| var projection = d3.geo.mercator() | |
| .center([-73.9400, 40.6700]) | |
| .scale(50000) | |
| .translate([(w) / 2, (h)/2]); | |
| //Define path | |
| var path = d3.geo.path() | |
| .projection(projection); | |
| //colors | |
| var color = d3.scale.linear() | |
| .domain([1, 250000]) | |
| .range(["#f1c40f", "#ff0000"]) | |
| .interpolate(d3.interpolateHcl); | |
| //tool tip | |
| var tip = d3.tip() | |
| .attr('class', 'd3-tip') | |
| .offset([-10, 0]) | |
| .html(function(d) {return "GeoID: " + d.properties.GeoID;}); | |
| //Create SVG element | |
| var svg = d3.select("body") | |
| .append("svg") | |
| .attr("width", w) | |
| .attr("height", h) | |
| .attr("class","canvas"); | |
| svg.call(tip); | |
| // Shape Data | |
| d3.json("nyctract.json", function(json) { | |
| //Json Data for tracts | |
| svg.selectAll("path") | |
| .data(json.features) | |
| .enter() | |
| .append("path") | |
| .attr("d", path) | |
| .attr("transform", "translate(" + 20 + "," + 30 + ")") | |
| .style("stroke", "white") | |
| .style("stroke-width", 1) | |
| /*.style("fill", "grey")*/ | |
| .style('fill', function(d) {return color( d.properties.medhhincom);}) | |
| .on('mouseover', tip.show) | |
| .on('mouseout', tip.hide); | |
| }); | |
| </script> | |
| </body> | |
| </html> | |
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