It appears that running r.neighbors with really large neighborhoods
results in mostly NULLs. A neighborhood of 31 seemed to work, but 51 returned only a tiny portion of the map.
Dave
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David W. Roberts office 406-994-4548
Professor and Head FAX 406-994-3190
Department of Ecology email droberts@montana.edu
Montana State University
Bozeman, MT 59717-3460