d3.csv(url[[, row], callback])
Creates a request for the CSV file at the specified url with the default mime type text/csv. An optional row conversion function may be specified to map and filter row objects to a more-specific representation; see dsv.parse for details. For example:
1 2 3 4 5 6 7 8 | function row(d) { return { year: new Date(+d.Year, 0, 1), // convert "Year" column to Date make: d.Make, model: d.Model, length: +d.Length // convert "Length" column to number };} |
The row conversion function can be changed by calling request.row on the returned instance. For example, this:
1 | d3.csv(url, row, callback); |
Is equivalent to this:
1 2 3 | d3.csv(url) .row(row) .get(callback); |
This convenience constructor is approximately equivalent to:
1 2 3 4 | d3.request(url) .mimeType("text/csv") .response(function(xhr) { return d3.csvParse(xhr.responseText, row); }) .get(callback); |
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