[GRASS-user] Network Topology Reconstruction

[Markus Neteler]

Hi,

v.edit in latest GRASS 6.3 is also a good candidate.

Markus

On Thu, Nov 08, 2007 at 07:38:16PM +0100, M S wrote:
> v.clean has various parameters.  Did you try increasing the threshold
> for the snapping?   I'd try in relatively small increments and observe
> the results, because having a snapping threshold too high will
> collapse features you dont want collapsed.
> 
> 
> Mark
> 
> On 11/8/07, Andre Hauptfleisch <ahaupt at gmail.com> wrote:
> > Good day,
> >
> > I'm busy working on road extraction from QuickBird imagery. I've managed to
> > get my centrelines into a network of vectors (thanks to Grass!), but I would
> > like to run a topology reconstruction tool of sorts.
> >
> > I've tried the v.clean component, but had little effect. I suppose my
> > branches and gaps are to big for them to be pruned and connected.
> >
> > Does anyone know of a component, or external tool that could complete my
> > vector network?
> >
> > I've various papers on the topic, but unfortunately I don't have enough time
> > implement and experiment with these at this stage.
> >
> > Any hints? Ideas?
> >
> > Regards,
> > Andre
> >
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> >
> 
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-- 
Markus Neteler  <neteler fbk eu>  http://mpa.fbk.eu/markus/
FBK-irst -  Centro per la Ricerca Scientifica e Tecnologica
MPBA - Predictive Models for Biol. & Environ. Data Analysis
Via Sommarive, 18        -       38050 Povo (Trento), Italy