Hi Eric and Markus,
Trying to use i.segment in grass7 checked out and compiled a few days
ago (rev 56918), I came upon the following error and the resulting
segments file was not created. I can file this as a bug report, but
wanted your feedback first to see if I'm misusing i.segment somehow. I
haven't been able to find the error in the source code.
command line:
time i.segment group=xs out=seg_xs minsize=2 memory=3072 threshold=0.2 --o
error:
Segmentation converged after 16 iterations.
Merging segments smaller than 2 cells
ERREUR :Ri is 0
This is on a mosaic of Worldview 2 images with region specs as follows:
> g.region -p
projection: 1 (UTM)
zone: 33
datum: wgs84
ellipsoid: wgs84
north: 4876400
south: 4849792
west: 610056
east: 634648
nsres: 2
ewres: 2
rows: 13304
cols: 12296
cells: 163585984
The mosaic is only a narrow band within that region, so that actually
there are only 34,755,878 non-null cells.
Any hints ?
Moritz
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