[GRASS-user] magic?

achim ak7 at jupiter.uni-freiburg.de
Thu Aug 20 12:58:20 EDT 2009


Hi,

I tried a lot. And I found a solution:

I made a buffer around the area with 0 distance. Then v.to.rast works.

If anyone knows why, it would be very interesting for me.

Moreover, when this happens in a big dataset, the error will probably
not recognized.

Thanks for attention,
Achim


achim schrieb:
> Hi,
> 
> using a new location: no success
> 
> export and import as shape-file: no success
> 
> reproduce it with spearfish dataset: no success
> 
> Has anybody an idea?
> 
> I attach the problem-polygon as a shape... hope somebody has the same
> problem with it ...and an idea.
> 
> Thanks,
> Achim
> 
> achim schrieb:
>> Hello,
>>
>> I used v.to.rast
>>     v.to.rast --overwrite input=inmap output=outmap use=cat
>> to convert 29 areas to raster.
>>
>> It says
>>     Converted areas: 29 of 29
>> but one area is missing!!!
>>
>> Its the one with cat number 16. Doing the same just for the selected 16,
>> conversion results in am empty raster map.
>>
>> the same with use=attr or usr=val. Another vector map also does not
>> convert some areas. The missing areas are not special
>>
>> What happens? Magic?
>>
>> I tried it with grass64 and newly compiled grass65. (OpenSuse 11.1 64bit)
>>
>> Achim
>>
>> PS:
>> Layer: 1
>> Typ       Anzahl        Min        Max
>> Punkt          0          0          0
>> Linie           0          0          0
>> Grenze       0          0          0
>> Zentroid      29          1         29
>> Fläche           0          0          0
>> Alle           29          1         29
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