I'm not that familiar with this type of data. I just had a similar issue, but had a GIS person do it in Arc view.
But maybe try some of the following functions? Match %in% Plus I'll forward U the replies I got to my post Good luck :-) -----Original Message----- From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On Behalf Of kfl...@falw.vu.nl Sent: Tuesday, 20 July 2010 9:42 PM To: r-help@r-project.org Subject: [R] data from SpatialGridDataFrame Dear All, I have a raster map of the class 'SpatialPointsDataFrame' and coordinates of the class 'SpatialPoints'. I would like to retrieve the values that are contained in the raster map at the specific locations given by the coordinates. Can anyone help me out? Kind regards, Katrin Fleischer ______________________________________________ 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. ______________________________________________ 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.