Created
July 28, 2013 01:25
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An exercise in using d3.js to replicate barcharts found in http://www.cbpp.org/cms/?fa=view&id=3927#_ftn10 with d3.js
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| var data = [ | |
| { | |
| "state":"Alaska", | |
| "percentage": -3.2 | |
| }, | |
| { | |
| "state":"Alabama", | |
| "percentage": -39.8 | |
| }, | |
| { | |
| "state":"Arizona", | |
| "percentage": -50.4 | |
| }, | |
| { | |
| "state":"Arkansas", | |
| "percentage":-18.9 | |
| }, | |
| { | |
| "state":"California", | |
| "percentage":-29.3 | |
| }, | |
| { | |
| "state":"Colorado", | |
| "percentage":-32.3 | |
| }, | |
| { | |
| "state":"Connecticut", | |
| "percentage":-23.1 | |
| }, | |
| { | |
| "state":"Delaware", | |
| "percentage":-25 | |
| }, | |
| { | |
| "state":"Florida", | |
| "percentage": -41.2 | |
| }, | |
| { | |
| "state":"Georgia", | |
| "percentage":-29.5 | |
| }, | |
| { | |
| "state":"Hawaii", | |
| "percentage":-25.3 | |
| }, | |
| { | |
| "state":"Idaho", | |
| "percentage": -39.6 | |
| }, | |
| { | |
| "state":"Illinois", | |
| "percentage":-23.3 | |
| }, | |
| { | |
| "state":"Indiana", | |
| "percentage":-17.2 | |
| }, | |
| { | |
| "state":"Iowa", | |
| "percentage":-27.7 | |
| }, | |
| { | |
| "state":"Kansas", | |
| "percentage":-24.5 | |
| }, | |
| { | |
| "state":"Kentucky", | |
| "percentage":-26.3 | |
| }, | |
| { | |
| "state":"Louisiana", | |
| "percentage": -42 | |
| }, | |
| { | |
| "state":"Maine", | |
| "percentage":-15.7 | |
| }, | |
| { | |
| "state":"Maryland", | |
| "percentage":-18.3 | |
| }, | |
| { | |
| "state":"Massachusetts", | |
| "percentage": -37.4 | |
| }, | |
| { | |
| "state":"Michigan", | |
| "percentage": -32.4 | |
| }, | |
| { | |
| "state":"Minnesota", | |
| "percentage":-30.4 | |
| }, | |
| { | |
| "state":"Mississippi", | |
| "percentage":-32.4 | |
| }, | |
| { | |
| "state":"Missouri", | |
| "percentage":-29.7 | |
| }, | |
| { | |
| "state":"Montana", | |
| "percentage":-16.6 | |
| }, | |
| { | |
| "state":"Nebraska", | |
| "percentage":-16.6 | |
| }, | |
| { | |
| "state":"Nevada", | |
| "percentage":-31.2 | |
| }, | |
| { | |
| "state":"New Hampshire", | |
| "percentage": -49.9 | |
| }, | |
| { | |
| "state":"New Jersey", | |
| "percentage": -27.2 | |
| }, | |
| { | |
| "state":"New Mexico", | |
| "percentage": -36.7 | |
| }, | |
| { | |
| "state":"New York", | |
| "percentage": -14.7 | |
| }, | |
| { | |
| "state":"North Carolina", | |
| "percentage": -14.6 | |
| }, | |
| { | |
| "state":"North Dakota", | |
| "percentage": 16.5 | |
| }, | |
| { | |
| "state":"Ohio", | |
| "percentage":-28.9 | |
| }, | |
| { | |
| "state":"Oklahoma", | |
| "percentage": -26.2 | |
| }, | |
| { | |
| "state":"Oregon ", | |
| "percentage": -43.6 | |
| }, | |
| { | |
| "state":"Pennsylvania", | |
| "percentage":-29.9 | |
| }, | |
| { | |
| "state":"Rhode Island", | |
| "percentage":-24.8 | |
| }, | |
| { | |
| "state":"South Carolina", | |
| "percentage": -38.8 | |
| }, | |
| { | |
| "state":"South Dakota", | |
| "percentage": -22.1 | |
| }, | |
| { | |
| "state":"Tennessee", | |
| "percentage":-30.1 | |
| }, | |
| { | |
| "state":"Texas", | |
| "percentage":-22.7 | |
| }, | |
| { | |
| "state":"Utah", | |
| "percentage":-30.6 | |
| }, | |
| { | |
| "state":"Vermont", | |
| "percentage":-18.6 | |
| }, | |
| { | |
| "state":"Virginia", | |
| "percentage":-27.8 | |
| }, | |
| { | |
| "state":"Washington", | |
| "percentage": -37.5 | |
| }, | |
| { | |
| "state":"West Virginia", | |
| "percentage": -17.8 | |
| }, | |
| { | |
| "state":"Wisconsin", | |
| "percentage":-17.5 | |
| }, | |
| { | |
| "state":"Wyoming", | |
| "percentage":7 | |
| }, | |
| ]; |
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| <!DOCTYPE HTML> | |
| <html> | |
| <head> | |
| <title></title> | |
| <script src="http://d3js.org/d3.v3.min.js"></script> | |
| <style> | |
| path.domain | |
| { | |
| display:none; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <script type="text/javascript" src="data.js"></script> | |
| <script> | |
| // Descending sort | |
| data.sort(function(a,b) | |
| { | |
| return a.percentage < b.percentage ? -1 : a.percentage > b.percentage ? 1: 0; | |
| }); | |
| var margin = {top: 0, right: 50, bottom: 20, left: 50}; | |
| var width = 650 - margin.right - margin.left; | |
| var height = 650 - margin.top - margin.bottom; | |
| var highestMagnitude = d3.max(data.map(function(d){return Math.abs(d.percentage);})); | |
| var xScaleLeft = d3.scale.linear().domain([-highestMagnitude,0]).range([width/2,0]); | |
| var xScaleRight = d3.scale.linear().domain([0,highestMagnitude]).range([0,width/2]); | |
| var yScale = d3.scale.ordinal().domain(data.map(function(d){return d.state;})).rangeRoundBands([margin.top,height - margin.bottom],.4); | |
| var yAxis = d3.svg.axis().scale(yScale).orient("left"); | |
| var svg = d3.select("body") | |
| .append("svg") | |
| .attr("height",height + margin.top + margin.bottom) | |
| .attr("width",width + margin.left + margin.right) | |
| .append("g") | |
| .attr("transform","translate(" + margin.left + "," + margin.top + ")"); | |
| svg.selectAll("rect").data(data).enter().append("rect") | |
| .attr({ | |
| "x":function(d) | |
| { | |
| if(d.percentage < 0) | |
| { | |
| return width/2 - xScaleLeft(d.percentage); | |
| } | |
| else | |
| { | |
| return width/2; | |
| } | |
| }, | |
| "y":function(d) | |
| { | |
| return yScale(d.state); | |
| }, | |
| "width":function(d) | |
| { | |
| if(d.percentage < 0) | |
| { | |
| return xScaleLeft(d.percentage); | |
| } | |
| else | |
| { | |
| console.log(xScaleRight(d.percentage) + width/2) | |
| return xScaleRight(d.percentage); | |
| } | |
| } , | |
| "height":yScale.rangeBand(), | |
| "fill":function(d) | |
| { | |
| if(d.percentage < 0) | |
| { | |
| return "#c33"; | |
| } | |
| else | |
| { | |
| return "#16a"; | |
| } | |
| } | |
| }) | |
| .on("mouseover",function(d) | |
| { | |
| console.log(d.state); | |
| }); | |
| var gy = svg.append("g") | |
| .attr("class", "y axis") | |
| .attr("transform","translate(" + width/2 + ", 0)") | |
| .call(yAxis) | |
| .selectAll("text") | |
| .style("text-anchor",function(d,i) | |
| { | |
| if(data[i].percentage < 0) | |
| { | |
| return "start"; | |
| } | |
| else | |
| { | |
| return "end"; | |
| } | |
| }) | |
| .attr("dx",function(d,i) | |
| { | |
| if(data[i].percentage < 0) | |
| { | |
| return 15; | |
| } | |
| else | |
| { | |
| return 3; | |
| } | |
| }) | |
| .style("font-family","sans-serif") | |
| .style("font-size",yScale.rangeBand() +3) | |
| .style("renderStyle","crisp-edges"); | |
| svg.selectAll("text.statePercentage") | |
| .data(data) | |
| .enter().append("text") | |
| .attr("class","statePercentage") | |
| .attr("transform","translate("+width/2+",0)") | |
| .text(function(d){return d.percentage + "%";}) | |
| .style("text-anchor",function(d,i) | |
| { | |
| if(data[i].percentage < 0) | |
| { | |
| return "end"; | |
| } | |
| else | |
| { | |
| return "start"; | |
| } | |
| }) | |
| .attr("x",function(d,i) | |
| { | |
| if(data[i].percentage < 0) | |
| { | |
| return -xScaleLeft(data[i].percentage); | |
| } | |
| else | |
| { | |
| return xScaleRight(data[i].percentage); | |
| } | |
| }) | |
| .attr("y",function(d,i) | |
| { | |
| return yScale(i) + yScale.rangeBand() / 2; | |
| }) | |
| .attr("dx",function(d,i) | |
| { | |
| return data[i].percentage < 0 ? -5 : 5; | |
| }) | |
| .attr("dy",3) | |
| .style("font-family","sans-serif") | |
| .style("font-size",yScale.rangeBand() + 2) | |
| .style("renderStyle","crisp-edges"); | |
| </script> | |
| </body> | |
| </html> |
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