[GRASS-dev] v.extracy fails for type=boundary
markus.metz.giswork at gmail.com
Fri May 4 07:41:59 PDT 2018
On Fri, May 4, 2018 at 4:09 PM, Nikos Alexandris <nik at nikosalexandris.net>
> I get something unexpected using type=boundary with `v.external`:
> v.extract input=european_grid_10k_boundaries out=test type=boundary --v
> Using native format
> Extracting features...
> Building topology for vector map <test at PERMANENT>...
> Registering primitives...
> 0 primitives registered
> 0 vertices registered
> Topology was built
> Number of nodes: 0
> Number of primitives: 0
> Number of points: 0
> Number of lines: 0
> Number of boundaries: 0
> Number of centroids: 0
> Number of areas: 0
> Number of isles: 0
> Writing attributes...
The default answer for the layer option of v.extract is 1, i.e. only
features with a category in layer 1 will be extracted. If you want to
extract all features of a given type, use e.g. v.extract layer=-1
> I tried this in both 7.4 and trunk.
> The map does have boundaries,
> v.info -t european_grid_10k_boundaries
> I can draw the boundaries on-screen using `d.vect type=boundary`.
> The vector map is small, so I have attached it here-in, in case someone
> can have a quick look.
> Thank you, Nikos
> grass-dev mailing list
> grass-dev at lists.osgeo.org
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