Perhaps easier to access them in R: library(raster) r <- raster(filename.grd) and then, e.g., plot(r) spg <- as(r, 'SpatialGridDataFrame') Robert On Sun, Oct 31, 2010 at 2:42 PM, Peter Larson <pslarson2 at gmail.com> wrote: > Hello, > > grd file problem solved. > > I used DIVA to convert the file to an ASCII. > > Thanks, > > Pete > > >