[GRASSLIST:7779] NVIZ and 3d vectors

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.

Greetings,

Jean-Denis

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

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

Thanks
Michael

On 8/4/05 1:05 AM, "Markus Neteler" <neteler@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>

(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@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

On 8/5/05, Markus Neteler <neteler@itc.it> wrote:

(cc Radim)

Maybe Radim can publish the house example.

Everything WAS in g51test-12.tar.gz, which I had to remove
from web because I did not have time to keep it up-to-date.
If you find a copy, there are 3D ascii files.

Radim