[GRASS-user] Re: [GRASSLIST:1175] add centroids automatically to area boundaries

[Hamish]

Ulrich Leopold wrote:

> I am trying to solve the impossible it seems. I have the following
> problem:
> 
> I have a patched vector map with lines. These lines should be
> converted into area boundaries in order to receive areas. Once
> boundaries are retrieved I still need  to attach centroids to them in
> order to overlay with *another* vector map which already consists of
> boundaries and areas including centroids. How can I achieve this?
> 
> I tried to convert all lines into boundaries with
> v.type type=line,boundary
> 
> It seems to work as there are only boundaries left. Next step would be
> to add automatically centroids to these boundaries. How can this be
> done?


v.category option=add


Hamish