See function pip (point in polygon) in package splancs. Renaud
2009/2/5 Rainer M Krug <r.m.k...@gmail.com> > On Thu, Feb 5, 2009 at 3:21 PM, Aleksandr Andreev > <aleksandr.andr...@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. > > Rainer > > > > > Thank you! > > > > Aleks > > > > -- > > ------------------------ > > Aleksandr Andreev > > Fulbright Fellow > > Graduate School of Management > > St Petersburg State University > > > > ______________________________________________ > > R-help@r-project.org mailing list > > https://stat.ethz.ch/mailman/listinfo/r-help > > PLEASE do read the posting guide > http://www.R-project.org/posting-guide.html > > and provide commented, minimal, self-contained, reproducible code. > > > > > > -- > Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation > Biology, UCT), Dipl. Phys. (Germany) > > Centre of Excellence for Invasion Biology > Faculty of Science > Natural Sciences Building > Private Bag X1 > University of Stellenbosch > Matieland 7602 > South Africa > > ______________________________________________ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide > http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > -- Renaud LANCELOT Département Systèmes Biologiques du CIRAD CIRAD, Biological Systems Department Campus International de Baillarguet TA 30 / B F34398 Montpellier Tel +33 (0)4 67 59 37 17 Secr. +33 (0)4 67 59 37 37 Fax +33 (0)4 67 59 37 95 [[alternative HTML version deleted]]
______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
