# Crossfilter

**Crossfilter** is a JavaScript library for exploring large multivariate datasets in the browser. Crossfilter supports extremely fast (<30ms) interaction with coordinated views, even with datasets containing a million or more records; we built it to power analytics for Square Register, allowing merchants to slice and dice their payment history fluidly.

Since most interactions only involve a single dimension, and then only small adjustments are made to the filter values, incremental filtering and reducing is significantly faster than starting from scratch. Crossfilter uses sorted indexes (and a few bit-twiddling hacks) to make this possible, dramatically increasing the perfor­mance of live histograms and top-K lists. Crossfilter is available under the [Apache License](/square/crossfilter/blob/master/LICENSE).

Want to learn more? [See the wiki.](https://github.com/square/crossfilter/wiki)


Fast multidimensional filtering for coordinated views. 

Meet the Socket Team at BlackHat and DEF CON in Las Vegas, Aug 4-6

crossfilter

Fast multidimensional filtering for coordinated views.

mbostock

jasondavies

randometc

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crossfilter

Crossfilter

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