Tutorial original from: http://bost.ocks.org/mike/bar/2/
A basic bar chart in svg.
Created
April 18, 2014 04:27
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Bar chart in svg
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| name | weight | |
|---|---|---|
| Mary | 60 | |
| Chi | 70 | |
| Chen | 45 | |
| Jack | 65 | |
| Weber | 66 | |
| Kevin | 80 |
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| <html> | |
| <head> | |
| <style> | |
| .chart rect { | |
| fill: steelblue; | |
| } | |
| .chart text { | |
| fill: white; | |
| font: 10px sans-serif; | |
| text-anchor: end; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <svg class="chart"> | |
| </svg> | |
| <script src="//cdnjs.cloudflare.com/ajax/libs/d3/3.4.5/d3.js"></script> | |
| <script> | |
| var width = 420; | |
| var barHeight = 20; | |
| d3.csv('./data.csv', type, function(data) { | |
| // scale | |
| var x = d3.scale.linear() | |
| .domain([0, d3.max(data, function(d) {return d.weight;})]) | |
| .range([0, width]); | |
| var chart = d3.select('.chart') | |
| .attr('width', width) | |
| .attr('height', barHeight * data.length); | |
| var bar = chart.selectAll('g') | |
| .data(data) | |
| .enter() | |
| .append('g') | |
| .attr('transform', function(d, i) {return "translate(0, " + i * barHeight + ")"}); | |
| bar.append('rect') | |
| .attr('width', function(d) {return x(d.weight)}) | |
| .attr('height', barHeight -1); | |
| bar.append('text') | |
| .attr('x', function(d) {return x(d.weight) -3 }) | |
| .attr('y', barHeight / 2) | |
| .attr('dy', '.35em') | |
| .text(function(d) {return d.name}) | |
| }) | |
| function type(d) { | |
| d.weight = +d.weight; // coerce to number | |
| return d; | |
| } | |
| </script> | |
| </body> | |
| </html> |
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