[GRASS-dev] v.to.db: next/prev line

[Moritz Lennert]

On 8/05/19 11:44, Martin Landa wrote:
> Hi,
> 
> st 8. 5. 2019 v 11:31 odesílatel Moritz Lennert
> <mlennert at club.worldonline.be> napsal:
>> I don't think we have a tool for this currently. However, I'm not sure that right and left are relevant terms for this case. Also: what do you do in the case when three lines meet at a node. What would be the 'next_left_edge line' ?
> 
> right, these terms comes from TopoGeo model based described in ISO 13249-3:2006.
> 
> See eg.
> 
> http://freegis.fsv.cvut.cz/gwiki/PostGIS_Topology
> https://trac.osgeo.org/postgis/attachment/ticket/3046/error_in_getRingedge.png

Right. That does make sens. I didn't think of left and right in that way.

I don't know what use cases are for this feature, compared to the ones I 
listed in my previous mail...

Moritz