data

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envision

http://www.humblesoftware.com/envision/ Envision.js is a library for creating fast, dynamic and interactive HTML5 visualizations. Real-Time: TimeSeries template with real-time data. This demo features animation of the selection when new data arrives. The data itself is from a function but could be a callback to a remote data source. ( click to code )
Fast Multidimensional Filtering for Coordinated Views Tesseract is a JavaScript library for filtering large multivariate datasets in the browser. Tesseract supports extremely fast ( http://square.github.com/tesseract/

Crossfilter

Insertion and Deletion Versus Balance We do not attempt to balance the tree with every insertion or deletion. The client may obtain a cursor to the leaf pages, iterate through them deleting records along the way.

strata_.coffee

http://bigeasy.github.com/strata/