Crossfilter is a Javascript library for filtering large datasets inwards the browser. When partnered amongst the Google Maps API it provides a powerful tool for edifice mapped visualisations of data.
Using Crossfilter tin endure a petty daunting at first. Luckily, however, Brendan Kelly, a fellow member of the Google Maps API team, has created a helpful YouTube video that walks you lot through how you lot tin give-up the ghost started amongst Crossfilter as well as the Google Maps API.
Brendan has also created a working demo map as well as made the code available on GitHub.
