How to export dc.js filtered data

Question

I'm using dc.js library to generate graphs and I would like to be able to retrieve the filtered data when filters are applied.

score 5 · Accepted Answer · answered Oct 08 '14 at 19:06

5

Create another dimension and then call dimension.top(Infinity) on it.

You will need the extra dimension because dimensions do not observe their own filters, only the filters on other dimensions.

Then you can use e.g. d3.csv.format to produce text, if you need to.

answered Oct 08 '14 at 19:06

Gordon

Yeah the thing is crossfilter – Boris Barroso Oct 08 '14 at 21:27
Here's a [complete example](http://dc-js.github.io/dc.js/examples/download-table.html) including a download button. Explained in [this answer](http://stackoverflow.com/a/37573744/676195). – Gordon Jun 01 '16 at 16:08

score 2 · Answer 2 · answered Nov 10 '18 at 23:26

2

In the version 4 of d3.js d3.csv.format doesn't exist, you must use d3.csvFormat instead.

const cf = crossfilter(data);

csvDimension = cf.dimension( x => x );

csvContent = d3.csvFormat(csvDimension.top(Infinity), [field, field2, ...]);

As Gordon said, csvDimension must be a new dimension in order for the filters to be applied.

answered Nov 10 '18 at 23:26

Suriem

Typescript will complain about type and returning true worked without errors `csvDimension = cf.dimension( x => true );` – David Douglas Apr 30 '20 at 17:36

2 Answers2