[GRASS-user] using v.line.center

[Hamish]

Manuel Sangiao wrote:
> in order to use *v.line.center* properly I use* v.category*
> to adjust category assignment.
> 
> As a result I get:
> 
> GRASS 6.2.2 (admeurop):> v.category in=bound1 layer=2 out=boundary1 --o
....
> Number of lines : 0
> Number of boundaries: 592
....
> Then I use *v.line.center* to get the middle points of the
> boundaries (That's right?). Then I get the following result:
....
> 0 records updated/inserted
....
> So, I get nothing
> 
> Any can me help? I don't understand this result.


use v.type to convert boundaries to lines first.


Hamish