[GRASS-user] r.neighbour and r.mask

Milton Cezar Ribeiro miltinho.astronauta at gmail.com
Tue Jul 7 01:12:44 EDT 2009

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
pixels will be NULL. If I use r.mask, it means that when I run r.neighbours
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)?


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