Dear all, Just suppose I have a very large - and irregular - region, and that I am running r.neighbors to compute some moving windows stats. As my region is irregular, many of central pixels will be NULL. If I use r.mask, it means that when I run r.neighbours the processing will be faster than when I not set r.mask (supposing that the north, south, west and east will be the same on both case)?
bests milton brazil=toronto
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