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 equipment and software to clients, and perhaps it is to
those who have higher math skills...
On 18-Jun-08, at 2:22 PM, Wolf Bergenheim wrote:
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 skeleton lines, but
currently there is no direct support for skeleton lines in GRASS, as
far as I can tell, perhaps if Martin P. gets interested he will
develop this method and as a by-product a v.skeleton module, but
that won't probably happen autumn if at all.
--Wolf
Looks like some interesting material, I'll have a read though this,
see what I can use out of it for my situation. I noticed the issue of
the "Branching" outside the Centerline/Skeleton came up, I'll have to
read deeper to see if or what the solution was for this issue.
Have a look at this old page
http://research.esd.ornl.gov/CRERP/DOCS/RIVERMI/P114.HTM
you could do the same thing in GRASS
Bill H.
Thanks Tom, I must have miss spelled when I searched it in the GRASS
manual.
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 Russo
Mars Sjoden
Aurora Geomatics
[EMAIL PROTECTED]
http://arorageo.blogspot.com/
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