[GRASS-user] v.vect.stats has no results
Andres Kuusk
andres at aai.ee
Tue Oct 18 06:42:26 EDT 2011
Hi,
> .. v.vect.stats uses the key column recorded in the db link info. If
> there would be a problem with the points vector, v.vect.stats should
> print something like
>
> area_cat|count|average
> 1|0|null
> 2|0|null
> 3|0|null
>
> Maybe rebuilding topology helps?
I created a new vector of points (tmp4) using v.select, operator=within
Building areas...
0 areas built
0 isles built
Attaching islands...
Attaching centroids...
Topology was built
Number of nodes: 577
Number of primitives: 577
Number of points: 577
All these points are inside the areas 1, 2, and 3 of the area vector "rami".
> Also output of v.info on the area vector
Area vector is "rami":
Type of map: vector (level: 2)
Number of points: 0 Number of centroids: 3
Number of lines: 0 Number of boundaries: 3
Number of areas: 3 Number of islands: 3
Map is 3D: No
Number of dblinks: 1
> and v.vect.stats after g.gisenv set="DEBUG=2".
(Tue Oct 18 12:36:48 2011)
g.gisenv set=DEBUG=2
(Tue Oct 18 12:36:48 2011) Command finished (0 sec)
(Tue Oct 18 12:36:58 2011)
v.vect.stats -p points=tmp4 areas=rami type=point method=average pcolumn=uav8 ccolumn=nuav scolumn=uav8min --verbose
(Tue Oct 18 12:36:58 2011) Command finished (0 sec)
> I am using GRASS-7, r47868.
Andres
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