Getting Started with GEO, CouchDB, and Node.js by Thompson Mick

Author:Thompson, Mick [Mick Thompson]
Language: eng
Format: epub
Tags: COMPUTERS / Data Processing
ISBN: 9781449315450
Publisher: O'Reilly Media, Inc.
Published: 2011-07-21T16:00:00+00:00

GeoCouch

GeoCouch is an branch of CouchDB that was created by Volker Mische. Within the same RESTful view framework of CouchDB he added a new index, R-trees. R-tree indices are used by many to store geospatial data because of speed of lookups. R-trees are basically a collection of bounding boxes—or ranges—that contain pointers to actual points in that range or other sub ranges contained in the parent range. This reduces the number of bounding boxes that need to be queried, as the dataset can most often be limited to a much smaller subset of the points stored. GeoCouch was merged and released as part of the new Couchbase, a merged datastore with functionality from both CouchDB and Membase. GeoCouch offers an easy way to build spatial indices by simply including GeoJSON formatted geometry data in the CouchDB view.

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