Created
February 4, 2014 20:01
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| <!DOCTYPE html> | |
| <html> | |
| <body> | |
| <script src="d3.js" charset="utf-8"></script> | |
| <script> | |
| // `data.csv` | |
| // date,pass,fail,compid | |
| // 01/2014,1,2,001 | |
| // 01/2014,11,5,002 | |
| // 02/2014,7,3,001 | |
| // 02/2014,8,1,002 | |
| // 03/2014,2,3,001 | |
| // 03/2014,6,1,002 | |
| d3.csv('data.csv', function(err, data){ | |
| if(err) throw err | |
| data = d3.nest() | |
| .key(function(d){ return d.date }) // `GROUP BY date` | |
| .rollup(function(values){ | |
| // `values` is all the rows of a particular date | |
| var counts = {}, keys = ['pass', 'fail'] | |
| keys.forEach(function(key){ | |
| counts[key] = d3.sum(values, function(d){ return d[key] }) | |
| }) | |
| return counts | |
| }) | |
| .entries(data) | |
| // `data` will now look like: | |
| // [ | |
| // { | |
| // "key": "01/2014", | |
| // "values": { | |
| // "pass": 12, | |
| // "fail": 7 | |
| // } | |
| // }, | |
| // { | |
| // "key": "02/2014", | |
| // "values": { | |
| // "pass": 15, | |
| // "fail": 4 | |
| // } | |
| // }, | |
| // { | |
| // "key": "03/2014", | |
| // "values": { | |
| // "pass": 8, | |
| // "fail": 4 | |
| // } | |
| // } | |
| // ] | |
| }) | |
| </script> | |
| </body> | |
| </html> |
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