RapidPolygonLookup: Polygon lookup using kd trees

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.

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

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Files

RapidPolygonLookup
RapidPolygonLookup/inst
RapidPolygonLookup/inst/doc
RapidPolygonLookup/inst/doc/RapidPolygonLookup.R
RapidPolygonLookup/inst/doc/RapidPolygonLookup.Rnw
RapidPolygonLookup/inst/doc/RapidPolygonLookup.pdf
RapidPolygonLookup/NAMESPACE
RapidPolygonLookup/data
RapidPolygonLookup/data/california.tract10.rda
RapidPolygonLookup/data/sf.crime.2012.rda
RapidPolygonLookup/data/sf.polys.rda
RapidPolygonLookup/data/datalist
RapidPolygonLookup/R
RapidPolygonLookup/R/RapidPolygonLookup.R RapidPolygonLookup/R/DiagnoseFailure.R RapidPolygonLookup/R/SearchForPolygon.R RapidPolygonLookup/R/AddRanges.R RapidPolygonLookup/R/FindPolygonInRanges.R RapidPolygonLookup/R/CropSpatialPolygonsDataFrame.R
RapidPolygonLookup/vignettes
RapidPolygonLookup/vignettes/RapidPolygonLookup.Rnw
RapidPolygonLookup/vignettes/RapidPolygonLookup.bib
RapidPolygonLookup/MD5
RapidPolygonLookup/build
RapidPolygonLookup/build/vignette.rds
RapidPolygonLookup/DESCRIPTION
RapidPolygonLookup/man
RapidPolygonLookup/man/RapidPolygonLookup.Rd RapidPolygonLookup/man/sf.polys.Rd RapidPolygonLookup/man/RapidPolygonLookup-package.Rd RapidPolygonLookup/man/sf.crime.2012.Rd RapidPolygonLookup/man/CropSpatialPolygonsDataFrame.Rd RapidPolygonLookup/man/FindPolygonInRanges.Rd RapidPolygonLookup/man/DiagnoseFailure.Rd RapidPolygonLookup/man/california.tract10.Rd RapidPolygonLookup/man/SearchForPolygon.Rd RapidPolygonLookup/man/AddRanges.Rd

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