Thanks Edzer. It's a sparse grid, indeed. I created it as SpatialPixels. I won't care... :-)
2008/4/7, Edzer Pebesma <[EMAIL PROTECTED]>: > G. Allegri wrote: > > Hi list, > > what does this warning mean? > > > > "Warning in points2grid(points,tolerance): > > grid has empty columns/rows in dimension 1" > > > > > That, when forming a grid from points, complete rows/columns are emtpy. > Dimension 1 is x. > > It gets out when doing an overlay between points and grid > > [overlay(grid, pointsdataframe)], with sp package. > > > > > Probably because it converts a SpatialPixels object (points on a grid) to > the full grid representation. > > I receive a complete list of values for the points, uploaded from the > > grid, but I don't know if I have to care about the warning... > > > > > Probably not. > -- > Edzer > > Giovanni > > > > _______________________________________________ > > R-sig-Geo mailing list > > R-sig-Geo@stat.math.ethz.ch > > https://stat.ethz.ch/mailman/listinfo/r-sig-geo > > > > > > _______________________________________________ R-sig-Geo mailing list R-sig-Geo@stat.math.ethz.ch https://stat.ethz.ch/mailman/listinfo/r-sig-geo
