[GRASSLIST:7797] Re: NVIZ and 3d vectors

[Markus Neteler]

(cc Radim)

On Thu, Aug 04, 2005 at 10:49:08PM -0700, Michael Barton wrote:
> There are some folks here at ASU who are interested in doing this kind of 3D
> generation. 
> 
> It would help, I think if we could at least see what the ascii files are
> like that generated the tower and houses,

Due to copyright restrictions I am not permitted to publish these
files of the 3D tower.

Maybe Radim can publish the house example.

> and the tree algorithm (if
> different from Jachym's perl script in the WIKI).

I only know the tree algorithm in the WIKI.

You have to use the "Faces" to make 3D surfaces. We should add
a simple example to the v.in.ascii HTML page.

Markus

> Thanks
> Michael
> 
> 
> On 8/4/05 1:05 AM, "Markus Neteler" <neteler at itc.it> wrote:
> 
> > On Wed, Aug 03, 2005 at 09:22:09PM -0400, Jean-Denis Giguere wrote:
> >> Hi all !
> >> 
> >> If you go on the GRASS 6 homepage
> >> (http://grass.itc.it/grass60/index.php), you will find very interesting
> >> snapshots that represent 3d views of a digital elevation model plus 3D
> >> vectors (see http://grass.itc.it/images/grass51trees.jpg and
> >> http://grass.itc.it/images/grass51_nviz.jpg)
> >> 
> >> I can't find any documentation about how to import and/or create such 3D
> >> vectors and vizualize them into nviz. I would really appreciate if
> >> someone could point me a tutorial or a draft procedure to create this
> >> kind of image.
> > 
> > The towers and houses were lovingly handcrafted using vim (by Radim).
> > The trees were done with a tree algorithm. Both generated as 3D ASCII
> > files, then imported with v.in.ascii.
> > 
> > It would be cool to have a program which takes 2D polygons and an
> > attribute column to generate 3D boxes (approximation of houses).
> > 
> > 
> > Markus
> 
> ____________________
> C. Michael Barton, Professor of Anthropology
> School of Human Evolution and Social Change
> PO Box 872402
> Arizona State University
> Tempe, AZ  85287-2402
> USA
> 
> Phone: 480-965-6262
> Fax: 480-965-7671
> www: <www.public.asu.edu/~cmbarton>
> 

-- 
Markus Neteler     <neteler itc it>       http://mpa.itc.it
ITC-irst -  Centro per la Ricerca Scientifica e Tecnologica
MPBA - Predictive Models for Biol. & Environ. Data Analysis
Via Sommarive, 18        -       38050 Povo (Trento), Italy