[GRASS-user] v.distance warning (WARNING: more cats of to_layer)

[Martin Landa]

Hi,

in your case the vector map (given as 'to' in v.distance) contains
some areas (bunch of boundaries and centroid inside). Category number
of area is assigned to the centroid. Geometry feature (point, line,
boundary, centroid, face or kernel) can have more categories in
general. The message from v.distance warns you that there are more
categories assigned to the area (i.e. centroid) in given layer
(to_layer). The last found category in given layer is taken for
computation, maybe v.distance should be fixed to handle also multiple
categories in one layer(?)

Martin

2008/3/12, Corrado <ct529 at york.ac.uk>:
> Dear Martin,
>
>  I do not understand what you mean. Could you please explain?
>
>
>  On Wednesday 12 March 2008 14:09:46 you wrote:
>  > Hi,
>  >
>  > it means that given vector feature from 'to' map (layer 'to_layers')
>  > has more then one category. Maybe it would make sense to change
>  > warning text to something less cryptic.
>  >
>  > Martin
>  >
>  > 2008/3/12, Corrado <ct529 at york.ac.uk>:
>  > > Dear Martin,
>  > >
>  > >  I am using 6.2.3.
>  > >
>  > >  On Wednesday 12 March 2008 13:31:49 you wrote:
>  > >  > Hi,
>  > >  >
>  > >  > 2008/3/12, Corrado <ct529 at york.ac.uk>:
>  > >  > >  what does the warning:
>  > >  > >
>  > >  > >  WARNING: more cats of to layer
>  > >  > >
>  > >  > >  mean, when you execute the command v.distance?
>  > >  >
>  > >  > which GRASS version are you using? I cannot find such kind of message
>  > >  > in grass_trunk.
>  > >  >
>  > >  > Martin
>  > >
>  > > Best Regards
>  > >  --
>  > >  Corrado Topi
>  > >
>  > >  Global Climate Change and Biodiversity
>  > >  Area 18,Department of Biology
>  > >  University of York, York, YO10 5YW, UK
>  > >  Phone: + 44 (0) 1904 328645, E-mail: ct529 at york.ac.uk
>
>
>  Best Regards
>  --
>  Corrado Topi
>
>  Global Climate Change and Biodiversity
>  Area 18,Department of Biology
>  University of York, York, YO10 5YW, UK
>  Phone: + 44 (0) 1904 328645, E-mail: ct529 at york.ac.uk
>


-- 
Martin Landa <landa.martin gmail.com> * http://gama.fsv.cvut.cz/~landa *