On 06/10/14 15:07, Pietro 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?
You can use either r.info (entire map) or r.univar (current region) for
that and then reuse the info in r.mapcalc.
Moritz
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