[GRASS-dev] Re: [GRASS-user] V.extrude... confused

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On Feb 13, 2008, at 1:45 PM, Sampson, David wrote:

Alright,

I am using the cygwin version of GRASS and much better results... The
function does not hang and it completes nicely.

I guess I was expecting to see a 3D object afterwords. I have to turn on
faces to see anything and still I only see lines.

Do I have to view this in nVIZ?

I used 30 and 300 for the height values but I still see nothing.

Does anyone have more experience using the v.extrude?

AFAIK, you need to use NVIZ to see 2.5/3D.

Michael

-----Original Message-----
From: grass-user-bounces@lists.osgeo.org
[mailto:grass-user-bounces@lists.osgeo.org] On Behalf Of Michael Barton
Sent: Wednesday, February 13, 2008 10:12
To: grass-user@lists.osgeo.org
Subject: Re: [GRASS-user] V.extrude... confused

On Feb 13, 2008, at 1:20 AM, grass-user-request@lists.osgeo.org wrote:

The green bar does not complete.

The fact that the green bar does not get completely to the right side of
the output window does not necessarily mean that the program has hung.
Is there a little 'running person' icon? If so, the process is still
going; if not, it's done.

Michael
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On Feb 13, 2008 10:06 PM, Michael Barton <michael.barton@asu.edu> wrote:

On Feb 13, 2008, at 1:45 PM, Sampson, David wrote:

...

> I guess I was expecting to see a 3D object afterwords. I have to
> turn on faces to see anything and still I only see lines.
>
> Do I have to view this in nVIZ?

Yes. In the GRASS monitor you only see (naturally) 2D.

> I used 30 and 300 for the height values but I still see nothing.
>
> Does anyone have more experience using the v.extrude?

AFAIK, you need to use NVIZ to see 2.5/3D.

Yes. For example:
http://grass.osgeo.org/screenshots/vector.php

Markus

On 13/02/08 22:31, Markus Neteler wrote:

On Feb 13, 2008 10:06 PM, Michael Barton <michael.barton@asu.edu> wrote:

On Feb 13, 2008, at 1:45 PM, Sampson, David wrote:

...

I guess I was expecting to see a 3D object afterwords. I have to
turn on faces to see anything and still I only see lines.

Do I have to view this in nVIZ?

Yes. In the GRASS monitor you only see (naturally) 2D.

I used 30 and 300 for the height values but I still see nothing.

Does anyone have more experience using the v.extrude?

AFAIK, you need to use NVIZ to see 2.5/3D.

Yes. For example:
http://grass.osgeo.org/screenshots/vector.php

Would it be possible to add the recipes for some of these screenshots, i.e. the entire chain of commands from v.extrude to the final 3D-Display, either to the screenshots page or for one example to the v.extrude page ?

Moritz

Hi,

some examples are there, only thing, which is missing is link to nviz
manual page.

the entire "chain" consist out of two commands:

v.extrude ... out=buildings
nviz elev=dem vect=buildings

jachym

Moritz Lennert píše v Čt 21. 02. 2008 v 13:39 +0100:

On 13/02/08 22:31, Markus Neteler wrote:
> On Feb 13, 2008 10:06 PM, Michael Barton <michael.barton@asu.edu> wrote:
>> On Feb 13, 2008, at 1:45 PM, Sampson, David wrote:
> ...
>>> I guess I was expecting to see a 3D object afterwords. I have to
>>> turn on faces to see anything and still I only see lines.
>>>
>>> Do I have to view this in nVIZ?
>
> Yes. In the GRASS monitor you only see (naturally) 2D.
>
>>> I used 30 and 300 for the height values but I still see nothing.
>>>
>>> Does anyone have more experience using the v.extrude?
>> AFAIK, you need to use NVIZ to see 2.5/3D.
>
> Yes. For example:
> http://grass.osgeo.org/screenshots/vector.php

Would it be possible to add the recipes for some of these screenshots,
i.e. the entire chain of commands from v.extrude to the final
3D-Display, either to the screenshots page or for one example to the
v.extrude page ?

Moritz
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--
Jachym Cepicky
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On 21/02/08 13:53, Jachym Cepicky wrote:

Hi,

some examples are there, only thing, which is missing is link to nviz
manual page.

the entire "chain" consist out of two commands:

v.extrude ... out=buildings
nviz elev=dem vect=buildings

Can you just show extruded vectors without a DEM underneath ? I get an error when I try just nviz vect=ExtrudedMap.

Moritz

some examples are there, only thing, which is missing is link to nviz
manual page.

I've added the missing link to main nviz html page in TRUNK and grass63_release branch.

~ Eric.