[GRASS-dev] patch for v.voronoi/v.delaunay

[Michael Barton]

On 4/22/08 4:40 PM, "grass-dev-request at lists.osgeo.org"
<grass-dev-request at lists.osgeo.org> wrote:

> Date: Wed, 23 Apr 2008 01:40:11 +0200
> From: "Markus Neteler" <neteler at osgeo.org>
> Subject: Re: [GRASS-dev] patch for v.voronoi/v.delaunay
> To: "GRASS developers list" <grass-dev at lists.osgeo.org>
> Message-ID:
> <86782b610804221640s3c03cab0w5533af1110694349 at mail.gmail.com>
> Content-Type: text/plain; charset=ISO-8859-1
> 
> On Wed, Apr 23, 2008 at 1:07 AM, Markus Neteler <neteler at osgeo.org> wrote:
>>  On Fri, Feb 1, 2008 at 2:16 PM, Benjamin Ducke wrote:
> ...
>>>  The output vector map will now also preserve the 3D coordinates of
>>>  the original input points. However, the centroids for the triangles
>>>  are all wrong (placed at z=0.0). I don't see a quick way of fixing
>>>  this right now.
>> 
>>  I have fixed it using Vect_tin_get_z() for delaunay (someone needs to
>>  do it for voronoi).
>> 
>>  I have submitted the fixed code to SVN:
>>  http://trac.osgeo.org/grass/changeset/31079
>> 
>>  For me it now generates a 3D Delaunay TIN.

Is there anyway to display a TIN in 3D with GRASS? In NVIZ, it just looks
like a Delaunay triangulation network unless there is something I'm not
doing.

Michael

> 
> I wonder if I could colorize the 3D TIN somehow using v.colors.
> So far it does not have a DB connected.
> 

__________________________________________
Michael Barton, Professor of Anthropology
Director of Graduate Studies
School of Human Evolution & Social Change
Center for Social Dynamics & Complexity
Arizona State University

phone: 480-965-6213
fax: 480-965-7671
www: http://www.public.asu.edu/~cmbarton