[GRASS-user] getting closed boundary line

[Maciej Sieczka]

temiz wrote:
> Maciej Sieczka wrote:
>> temiz wrote:
>>  
>>> how can I get perimeter line of an area ( as closed boundary line) ?
>>
>> v.to.db
>>   
> thank you for your interest
> 
> If I am not mistaken, v.to.db produces  perimeter  as value.

Yes. You asked for perimeter. The perimeter is the distance around a
two-dimensional object. Hence, it has to be a "value".

> I need only border  "line"  of an area  (as graphic).

OK. So you want to extract a boundary. Then add category (v.category)
to your boundary and extract it (v.extract).

Maciek