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November 14, 2016 19:17
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Dynamic C3 Donut Chart
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| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <link href="https://cdnjs.cloudflare.com/ajax/libs/c3/0.4.11/c3.min.css" rel="stylesheet"> | |
| <style> | |
| body | |
| { | |
| min-width: 800px; | |
| } | |
| .chart | |
| { | |
| width: 600px; | |
| height: 400px; | |
| margin: 1em; | |
| padding: 1em; | |
| border: 2px dashed #888; | |
| background: #ccc; | |
| } | |
| </style> | |
| <body> | |
| <div id="chart" class="chart"></div> | |
| </body> | |
| <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script> | |
| <script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.6/d3.min.js"></script> | |
| <script src="https://cdnjs.cloudflare.com/ajax/libs/c3/0.4.11/c3.js"></script> | |
| <script> | |
| var chart = c3.generate({ | |
| bindto: '#chart', | |
| data: { | |
| columns: [ | |
| ['Data1', 100] | |
| ], | |
| type : 'donut', | |
| } | |
| }); | |
| d3.select(window).on( "resize", function() { chart.resize(); } ); | |
| var used = []; | |
| function update() | |
| { | |
| var cols = []; | |
| var offset = parseInt( Math.random() * 10 ); | |
| // Create new data | |
| for (var i = 0; i < 10; i++) | |
| cols.push( [ 'Data'+(offset + i), parseInt( Math.random() * 1000 ) ] ); | |
| // Create an array of old keys | |
| var nkeys = cols.reduce(function(p, c){ p.push(c[0]); return p; }, []); | |
| var remove = used.filter(function(v){ return nkeys.indexOf(v) < 0;}); | |
| used = nkeys; | |
| // Load the new data | |
| chart.load({columns: cols, unload: remove}); | |
| setTimeout(update, 1000); | |
| } | |
| $(update); | |
| </script> | |
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