Dear list members, I'm looking for a function in R like the function r.in.xyz in GRASS (vs. 6.2). I have x, y, z data frame (UTM) with z equals depth and would like to make a 3dperspective plot with rgl. My dataframe has 2.5 milion rows, so I think it's necessary to convert the data to a grid with something like mean depth per grid cell. I know I've seen an answer to a similar question somewhere on one of the lists, but I just don't seem to be able to find it again. Thanks for any help. Erik Meesters
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