Michael Barton pisze:
Am I missing something or is there no module that does the opposite of
r.grow (i.e., shrink rasters of a given category by 1 or more pixels)?
r.thin tries to thin to a line.
Michael
____________________
C. Michael Barton
Director, Center for Social Dynamics & Complexity
Professor of Anthropology, School of Human Evolution & Social Change
Arizona State University
voice: 480-965-6262 (SHESC), 480-727-9746 (CSDC)
fax: 480-965-7671 (SHESC), 480-727-0709 (CSDC)
www: www.public.asu.edu/~cmbarton,
<http://www.public.asu.edu/%7Ecmbarton,> http://csdc.asu.edu
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for that I use following mapcalc expression:
echo 'map=if( isnull(map[-1,-1])||isnull(map[-1,0])|| \
isnull(map[-1,1])||isnull(map[0,-1])|| \
isnull(map[0,1])||isnull(map[1,-1])||isnull(map[1,0])|| \
isnull(map[1,1]), map,null())'| r.mapcalc
this work for me
Jarek
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