[GRASS-user] v.net option connect

[Martin Landa]

Ciao Ivan,

2008/7/23 ivan marchesini <marchesini at unipg.it>:
> I have a network of 6379 roads
> I have a map with a single point
>
> I run:
>
> v.net input=road points=point operation=connect output=connected_point
> thresh=(very high thresh) alayer=1 nlayer=2
>
> then (to check the output):
>
> v.build connected_point
>
> and I see that the number of lines is 6381
>
> i.e. the module v.net creates two lines for one point???

the network arc(edge) need to be splitted, e.g.

------------------

          +

->

--------+---------
           |
           |
          +

In this case you get two lines more.

Cheers, Martin

-- 
Martin Landa <landa.martin gmail.com> * http://gama.fsv.cvut.cz/~landa *