RapidPolygonLookup: Polygon lookup using kd trees
Version 0.1

Facilitates efficient polygon search using kd trees. Coordinate level spatial data can be aggregated to higher geographical identities like census blocks, ZIP codes or police district boundaries. This process requires mapping each point in the given data set to a particular identity of the desired geographical hierarchy. Unless efficient data structures are used, this can be a daunting task. The operation point.in.polygon() from the package sp is computationally expensive. Here, we exploit kd-trees as efficient nearest neighbor search algorithm to dramatically reduce the effective number of polygons being searched.

Package details

AuthorMarkus Loecher <markus.loecher@gmail.com> and Madhav Kumar <madhavkumar2005@gmail.com>
Date of publication2014-01-28 16:28:53
MaintainerMarkus Loecher <markus.loecher@gmail.com>
LicenseGPL
Version0.1
Package repositoryView on CRAN
Installation Install the latest version of this package by entering the following in R:
install.packages("RapidPolygonLookup")

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RapidPolygonLookup documentation built on May 30, 2017, 1:44 a.m.