#2550: Polygons disappear after v.generalize simplification
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Reporter: dido | Owner:
grass-dev@…
Type: defect | Status: new
Priority: major | Milestone:
6.4.5
Component: Vector | Version:
6.4.4
Keywords: Polygons disappear v.generalize simplification | Platform:
MSWindows 7
Cpu: x86-64 |
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Comment(by mmetz):
Replying to [ticket:2550 dido]:
> Polygons disappear after v.generalize simplification.
>
> A large rectangular polygon dataset is used with ~14 000 features.
> Polygons are first processed with rmarea to remove all polygons of size
900 m2. Then a simplification is executed with v.generalize using a factor
of 10, all other parameters defaulted.
>
> After simplification several large polygons are missing from the set
rendering it useless.
I can confirm the problem. This is a bug in the vector libraries regarding
topology updating and has been fixed in GRASS 7. Please wait for GRASS
7.0.0RC2 or use a daily build.
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Ticket URL: <http://trac.osgeo.org/grass/ticket/2550#comment:3>
GRASS GIS <http://grass.osgeo.org>
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