Wondering if there is a simple way in GRASS to produce skeletons of
Polygons (rivers/streams), to find the flow centerline.
thanks
Mars Sjoden
Aurora Geomatics
[EMAIL PROTECTED]
http://arorageo.blogspot.com/
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Subject: [GRASS-user] Centerlines of Polygons (skeletons)
Wondering if there is a simple way in GRASS to produce skeletons of
Polygons (rivers/streams), to find the flow centerline.
thanks
Mars Sjoden
Aurora Geomatics
[EMAIL PROTECTED]
http://a
Hi,
I only know the way for raster data using r.thin to get a center line
for e.g. wide raster streams.
Christian.
Am Mittwoch, den 18.06.2008, 10:24 -0700 schrieb Aurora Geomatics:
> Wondering if there is a simple way in GRASS to produce skeletons of
> Polygons (rivers/streams), to find the
Thank you to both Christian and Michael,
I suppose that is an avenue to go down, but then I suppose if I were
to go the Raster route I may as well use the DEM file and do a quick
hydro-analysis.
I wonder, is there a way to create a Voronoi diagram in GRASS?
hmmm,
Oh, is there a method to
On Wed, Jun 18, 2008 at 02:01:56PM -0700, we recorded a bogon-computron
collision of the <[EMAIL PROTECTED]> flavor, containing:
>
> I wonder, is there a way to create a Voronoi diagram in GRASS?
>
Yes. With v.voronoi.
--
Tom RussoKM5VY SAR502 DM64ux http://www.swcp.com/~rus
On 19.06.2008 00:01, Aurora Geomatics wrote:
I wonder, is there a way to create a Voronoi diagram in GRASS?
There is the v.voronoi module, which is also the subject of one of the
Summer of Code projects this summer. I've been looking at an algorithm
that creates Voronoi diagrams out of skel
This sounds very interesting, certainly I could see this really coming
in handy when given a few thousand polygons of rivers and streams and
asked to quickly output the centerlines... Finding centerlines of
river/stream polygons may seem so simple for all this powerful
computational equipme
Mars wrote:
> Wondering if there is a simple way in GRASS to produce skeletons
> of Polygons (rivers/streams), to find the flow centerline.
Michael Perdue
> You could do;
>
> v.to.rast -> r.thin -> r.to.vect -> v.clean (and
> maybe v.generalize)
>
> But you'll lose the link to the attribute dat
