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Michael Hladky edited this page Jun 17, 2019 · 18 revisions

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.

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

Contributing To Crossfilter

If you want to contribute to Crossfilter, please submit a pull request (PR) with your changes. The PR should contain tests (but not build artifacts).

If you are looking for a way to contribute, check out the help wanted and documentation issues.

This is a community-maintained fork of square/crossfilter and you don't need to sign a contributor agreement.

Using Crossfilter

TypeScript

In order to use the Typescript definition in crossfilter add the following import statement to your typescript project code:

import crossfilter from 'crossfilter2';

Then to use crossfilter pass the data array to crossfilter inside your typescript file.

import crossfilter from 'crossfilter2';

class Payments {
    var payments = crossfilter([
          {date: "2011-11-14T16:17:54Z", quantity: 2, total: 190, tip: 100, type: "tab", productIDs:["001"]},
          {date: "2011-11-14T16:20:19Z", quantity: 2, total: 190, tip: 100, type: "tab", productIDs:["001", "005"]},
          {date: "2011-11-14T16:28:54Z", quantity: 1, total: 300, tip: 200, type: "visa", productIDs:["004" ,"005"]},
          {date: "2011-11-14T16:30:43Z", quantity: 2, total: 90, tip: 0, type: "tab", productIDs:["001", "002"]},
          {date: "2011-11-14T16:48:46Z", quantity: 2, total: 90, tip: 0, type: "tab", productIDs:["005"]},
          {date: "2011-11-14T16:53:41Z", quantity: 2, total: 90, tip: 0, type: "tab", productIDs:["001", "004" ,"005"]},
          {date: "2011-11-14T16:54:06Z", quantity: 1, total: 100, tip: 0, type: "cash", productIDs:["001", "002", "003", "004" ,"005"]},
          {date: "2011-11-14T16:58:03Z", quantity: 2, total: 90, tip: 0, type: "tab", productIDs:["001"]},
          {date: "2011-11-14T17:07:21Z", quantity: 2, total: 90, tip: 0, type: "tab", productIDs:["004" ,"005"]},
          {date: "2011-11-14T17:22:59Z", quantity: 2, total: 90, tip: 0, type: "tab", productIDs:["001", "002", "004" ,"005"]},
          {date: "2011-11-14T17:25:45Z", quantity: 2, total: 200, tip: 0, type: "cash", productIDs:["002"]},
          {date: "2011-11-14T17:29:52Z", quantity: 1, total: 200, tip: 100, type: "visa", productIDs:["004"]}
    ]);
}
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