Thanks Helmut
v.extract demo cats=1-100 out=new
worked like a charm! Sorry I missed your point the first time.
Dave
On 11/27/16 23:46, Helmut Kudrnovsky wrote:
Thanks for the suggestion, but the area with no centroid doesn't
have a cat.
that's exactly what I've meant.
then do v.extract cats="cats of the polygones with cat" to extract only
these polygones you need.
from the v.extract manual :
cats=range
Category values
Example: 1,3,7-9,13
-----
best regards
Helmut
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