On Mon, Oct 6, 2014 at 9:07 AM, Pietro <[email protected]> wrote: > On Mon, Oct 6, 2014 at 2:25 PM, Anna Petrášová <[email protected]> > wrote: > > On Mon, Oct 6, 2014 at 4:51 AM, Pietro <[email protected]> wrote: > >> Again everything is NULL, I'm doing something wrong or it is a bug? > > > > > > Glynn could perhaps give you some more precise comment, but basically, > max > > doesn't operate on the entire map but only on the current cell. So for > > example, r.macalc "map_max = max(elevation1, elevation2, elevation3)" > > creates a map where each cell is the largest value of the corresponding > > cells in the 3 elevation maps. > > Ahh, I misunderstood the documentation I thought it was not pixel by > pixel but for the whole raster map... > now the results are explained! :-) > > Perhaps we could add two new functions, like: rmin and rmax that stay > for range min and range max that give this information, do you think > could be useful? >
Yes, definitely, I was also missing this functionality. I assume it shouldn't be too difficult since range is stored in the map anyway. Anna
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