[GRASS-user] more on v.net: break lines on nodes

[Moritz Lennert]

On 07/07/09 11:39, achim wrote:
>>> So, I don't really see the possibility of having nodes on a network
>>> line. Could you elaborate ?
> 
> I like to do something like "zonal statistics" on vector areas. Not with
> rasters, but with vectors inside. That means eg:
> 
> "length of all roads of a kind for every area". Or: "longest road on
> that area in an network of roads".
> 
> Maybe there is a possibility to "cut out" line features on the border of
> areas?

v.overlay operator=and: the result gives you an attribute table 
combining both original attribute tables and thus allows easy summary 
statistics through SQL queries.

Moritz