v.support:PNT_TO_AREA failed

[Susan Huse]

On Wed, 3 Jan 1996, Agustin Lobo wrote:

You will need to go into v.digit and clean up these polygons.  Any 
unlabeled polygon will not be converted to raster - GRASS doesn't know 
it's value.  There are many tools for editting files in v.digit.  Review 
the note I just wrote to Gregg Hadish who was having problems labeling 
newly digitized area data.


> Hi!
> 
> When running v.support I get:
>     Reading Vector file.
>  100%
>     Building areas
>     Building islands
>     Attaching labels
> PNT_TO_AREA failed: (95789.981316, 90030.500000) (Category 3)
> PNT_TO_AREA failed: (71639.682632, 89589.567338) (Category 11)
> PNT_TO_AREA failed: (143834.189942, 96443.688325) (Category 15)
> PNT_TO_AREA failed: (133385.125018, 96305.000000) (Category 74)
> PNT_TO_AREA failed: (115477.821506, 100638.269729) (Category 89)
>  Number of lines:   329
>  Number of nodes:   258
>  Number of areas:   85
>  Number of isles:   29
>  Number of atts :   85
>  Number of unattached atts :   5
>  Snapped lines  :   0
> 
> Then, if I try to convert to raster with v.to.rast I get 
> a raster with a large empty patch. I've run v.spag, but this 
> does not seem to improve the result.
> 
> Thanks a happy 1996
> !
> 
> Agus
> 
> ***************************************************
> Dr. Agustin Lobo
> Instituto de Ciencias de la Tierra (CSIC)
> Marti Franques s/n
> 08028 Barcelona (Spain)
> 
> tel. 34 3 330 2716
> fax. 34 3 411 0012
> 
> alobo at ija.csic.es
> alobo at eno.princeton.edu
> ***************************************************
> 


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