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d3 segment chart
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| <!doctype html> | |
| <html> | |
| <head> | |
| <title>Segment Graph</title> | |
| <style> | |
| #segmentChart { | |
| width: 400px; | |
| height: 100px; | |
| } | |
| </style> | |
| <script src="https://raw.github.com/mbostock/d3/master/d3.v2.min.js" type="text/javascript"></script> | |
| <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.8.2/jquery.min.js" type="text/javascript"></script> | |
| <script src="http://underscorejs.org/underscore-min.js" type="text/javascript"></script> | |
| <script type="text/javascript"> | |
| $(document).ready(function(){ | |
| var data=[{key: 2011, values : [10,100]},{key: 2012, values: [20, 150]}, {key: 2013, values: [30, 120]}]; | |
| var d3Data = [] | |
| var lowDomain=0, highDomain=0; | |
| _.each(data, function(obj,index) { | |
| if(-obj.values[0]<lowDomain) { lowDomain = -obj.values[0]; } | |
| if(obj.values[1]>highDomain) { highDomain=obj.values[1]; } | |
| obj.values[0] = -obj.values[0]; | |
| }); | |
| var chartWidth = $("#segmentChart").width(); | |
| var margin = 10; | |
| var colors = d3.scale.category10(); | |
| x = d3.scale.linear().domain([lowDomain,highDomain]).range([margin,chartWidth-margin]); | |
| var availableHeight = $("#segmentChart").height()-margin*2; | |
| barHeight = availableHeight / (data.length + (data.length-1)/2); | |
| var chart = d3.select("#segmentChart").selectAll(".series") | |
| .data(data) | |
| .enter() | |
| .append("g").classed("series",true).style("fill",function(d,i) { return colors(i) }) | |
| .attr("transform",function(d,i) { return "translate(0,"+(margin+i*barHeight*1.5)+")"; }) | |
| .selectAll("rect").data(function(d,i){ console.log(d);return d.values;}) | |
| .enter() | |
| .append("rect") | |
| .attr("x",function(d,i) { if(d<0) { return x(d); } else { return x(0); } }) | |
| .attr("y",0) | |
| .attr("width",function(d,i) { return Math.abs(x(d)-x(0)); }) | |
| .attr("height", barHeight) | |
| .append("title").text(function(d,i) { return Math.abs(d); }); | |
| d3.select("#segmentChart").append("line").attr("x1",x(0)).attr("y1",margin).attr("x2",x(0)).attr("y2",margin+availableHeight).attr("style","stroke:black") | |
| }); | |
| </script> | |
| </head> | |
| <body> | |
| <svg id="segmentChart"> | |
| </svg> | |
| </body> | |
| </html> |
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