The crossfilter.js library

Crossfilter is also a library created by D3's author Mike Bostock, initially used to power analytics for Square Register.

Crossfilter is a JavaScript library for exploring large multivariate datasets in browser. Crossfilter supports extremely fast (<30ms) interaction with coordinated views, even with datasets containing a million or more records.

-Crossfilter Wiki (August 2013)

In other words, Crossfilter is a library that you can use to generate data dimensions on large and typically flat multivariate datasets. So what is a data dimension? A data dimension can be considered as a type of data grouping or categorization while each dimensional data element is a categorical variable. Since this is still a pretty abstract concept, ...

Get Data Visualization with D3.js Cookbook now with O’Reilly online learning.

O’Reilly members experience live online training, plus books, videos, and digital content from 200+ publishers.