[R] maptools: Test if point is in polygon

Rainer M Krug r.m.krug at gmail.com
Thu Feb 5 16:01:25 CET 2009

On Thu, Feb 5, 2009 at 3:21 PM, Aleksandr Andreev
<aleksandr.andreev at gmail.com> wrote:
> In R's maptools package, is there a built-in function to test if a
> given point is "inside" a given polygon on the map?  The map was
> loaded from an ESRI Shapefile. The point's latitude and longitude are
> known.

If everything else fails, convert the shape file into a raster and
"drill down" at the location of the points.


> Thank you!
> Aleks
> --
> ------------------------
> Aleksandr Andreev
> Fulbright Fellow
> Graduate School of Management
> St Petersburg State University
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Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation
Biology, UCT), Dipl. Phys. (Germany)

Centre of Excellence for Invasion Biology
Faculty of Science
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University of Stellenbosch
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South Africa

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