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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.

Resources

• Introduction
• API Reference
• Support

Contributing

Want to add support for a new backend or visualization? We'd love for you to participate in the development of Crossfilter. Before we can accept your pull request, please sign our Individual Contributor License Agreement. It's a short form that covers our bases and makes sure you're eligible to contribute. Thank you!