Hi GRASSusers,
it seems that r.clump doesn't clump a reclassed map derived from a
previously clumped map.
Here an example (with spearfish data):
r.clump input=geology output=geology.dump
(422 clumps. Correct)
r.reclass input=geology.clump output=geology.clump.rec
50 200 = 1
end
(the map geology.clump.rec contains 2 groups of cells with category 1.
Correct)
r.clump input=geology.clump.rec output=geology.final
(geology.final contains 11 clumps instead of 2. Not correct)
Note that:
1) r.clump works well on a new map obtained from the reclassed map with
r.resample.
2) With GRASS4.3 the above procedure works well. The geology.final map
contains 2 clumps as aspected.
Anything wrong in version 5 ?
Thanks.
Aldo Clerici