[GRASS-dev] integrate v.concave.hull into v.hull [was point cloud analysis: new features]]

[Blumentrath, Stefan]

Hei Markus,

Assuming you have no attributes for those lines, what about the following procedure:

1) Turning all to closed line strings into areas in a first step (v.centroids) and then 
2) use some v.to.db ("sides" option) in order to distinguish inner and outer boundaries, in other words those which have no category at one side from those which have a category at both sides?
3) Then you can extract the latter and build areas only from them...

Cheers
Stefan 

-----Original Message-----
From: grass-dev-bounces at lists.osgeo.org [mailto:grass-dev-bounces at lists.osgeo.org] On Behalf Of Markus Neteler
Sent: 23. mars 2015 12:17
To: Moritz Lennert
Cc: GRASS developers list; Markus Metz
Subject: Re: [GRASS-dev] integrate v.concave.hull into v.hull [was point cloud analysis: new features]]

Hi,

ok, to make it hopefully clear:
attached a screenshot of the lines describing contours of a lake.

I would like to turn this into a polygon describing the like, ideally in a non-manual way.

thanks
Markus