[GRASS-user] Creating 3D Vector file (v.in.ascii) for eventual use in NVIZ

GRASS GRASS user
1

Could these tutorials be actual MPEG movies showing screen captures of
what was done? I've seen such kinds of tutorials put out by different
companies (e.g., ESRI), but I don't know how difficult it would be to do
or whether the resulting MPEG would be unmanageably large etc.

My 2 cents.
Craig

-------------

hallo,

On Mon, Oct 02, 2006 at 07:32:54PM +1300, Hamish wrote:

I'm thinking for a while now that it would be really nice to put
together a collection of articles showcasing the existing and new 3D
capabilities of GRASS 6 for an upcoming GRASS newsletter or special
edition.

for example:

* 3D vector processing
   - overview of GRASS's method: faces, kernels, etc
   - new 3D vector modules from Jachym (v.extrude etc)
   - some nice example (e.g. make a pyramid [see attached]),

Trento/NYC

* 3D raster processing
   - overview of GRASS's method: voxels, g.region -3, as a time

series, etc

   - new 3D raster modules from Sren
   - some nice example (e.g. do some quantitative analysis of sample
      Slovakia rain data)

* visualization with NVIZ, export to VTK etc
   - new NVIZ features by Massimo and Luigi, Bob, etc
   - v.in.onearth SRTM + LANDSAT -> i.landsat.rgb -> nviz (reader's

home)

etc., etc., etc.

(I'm a big fan of bite sized 10-15 minute tutorials...)

Hamish

if there is interest on this topic, i could prepare some tutorials out
of my presentations (fossgis in bonn, foss4g in lausanne). though i got
some positive feedback, i was never shure, if the presentations are good
start for such kind of tutorials.

when should next release of grass news come out?

thanks

jachym
--
Jachym Cepicky
e-mail: jachym.cepicky@centrum.cz
URL: http://les-ejk.cz
GPG:
http://les-ejk.cz/gnupg_public_key/jachym_cepicky-gpg_public_key.asc
-----------------------------------------
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URL: http://mapserver.mendelu.cz
Tel.: +420 545 134 514
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University of Alberta
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T6G 2E9
Phone: 780-492-1289
Fax: 780-492-9234

2

On Mon, Oct 02, 2006 at 12:00:33PM -0600, Craig Aumann wrote:

Could these tutorials be actual MPEG movies showing screen captures of
what was done? I've seen such kinds of tutorials put out by different
companies (e.g., ESRI), but I don't know how difficult it would be to do
or whether the resulting MPEG would be unmanageably large etc.

I would suggest use flash instead of mpegs

jachym

My 2 cents.
Craig

-------------

hallo,

On Mon, Oct 02, 2006 at 07:32:54PM +1300, Hamish wrote:
> I'm thinking for a while now that it would be really nice to put
> together a collection of articles showcasing the existing and new 3D
> capabilities of GRASS 6 for an upcoming GRASS newsletter or special
> edition.
>
> for example:
>
> * 3D vector processing
> - overview of GRASS's method: faces, kernels, etc
> - new 3D vector modules from Jachym (v.extrude etc)
> - some nice example (e.g. make a pyramid [see attached]),
Trento/NYC
>
> * 3D raster processing
> - overview of GRASS's method: voxels, g.region -3, as a time
series, etc
> - new 3D raster modules from Sren
> - some nice example (e.g. do some quantitative analysis of sample
> Slovakia rain data)
>
> * visualization with NVIZ, export to VTK etc
> - new NVIZ features by Massimo and Luigi, Bob, etc
> - v.in.onearth SRTM + LANDSAT -> i.landsat.rgb -> nviz (reader's
home)
>
> etc., etc., etc.
>
>
> (I'm a big fan of bite sized 10-15 minute tutorials...)
>
>
> Hamish

if there is interest on this topic, i could prepare some tutorials out
of my presentations (fossgis in bonn, foss4g in lausanne). though i got
some positive feedback, i was never shure, if the presentations are good
start for such kind of tutorials.

when should next release of grass news come out?

thanks

jachym
--
Jachym Cepicky
e-mail: jachym.cepicky@centrum.cz
URL: http://les-ejk.cz
GPG:
http://les-ejk.cz/gnupg_public_key/jachym_cepicky-gpg_public_key.asc
-----------------------------------------
OFFICE:
Department of Geoinformation Technologies
Zemedelska 3
613 00, Brno
Czech Republick
e-mail: xcepicky@node.mendelu.cz
URL: http://mapserver.mendelu.cz
Tel.: +420 545 134 514
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--
CW-405 Biological Sciences Blding
University of Alberta
Edmonton AB
T6G 2E9
Phone: 780-492-1289
Fax: 780-492-9234

_______________________________________________
grassuser mailing list
grassuser@grass.itc.it
http://grass.itc.it/mailman/listinfo/grassuser

--
Jachym Cepicky
e-mail: jachym.cepicky@centrum.cz
URL: http://les-ejk.cz
GPG: http://les-ejk.cz/gnupg_public_key/jachym_cepicky-gpg_public_key.asc
-----------------------------------------
OFFICE:
Department of Geoinformation Technologies
Zemedelska 3
613 00, Brno
Czech Republick
e-mail: xcepicky@node.mendelu.cz
URL: http://mapserver.mendelu.cz
Tel.: +420 545 134 514

3

Hi,

Jachym Cepicky schrieb:

On Mon, Oct 02, 2006 at 12:00:33PM -0600, Craig Aumann wrote:

Could these tutorials be actual MPEG movies showing screen captures of
what was done? I've seen such kinds of tutorials put out by different
companies (e.g., ESRI), but I don't know how difficult it would be to do
or whether the resulting MPEG would be unmanageably large etc.

I would suggest use flash instead of mpegs

Yes flash is a nice small format.
There is a free tool available to create flash
tutorials from a vnc session.

http://www.unixuser.org/~euske/vnc2swf/

There is a sample tutorial about r3.out.vtk available at:

http://www-pool.math.tu-berlin.de/~soeren/grass/modules/

It would be great if we can provide beginners tutorials
covering themes like:

* what is grass
* creation of a new location
* importing data into grass
* using gis.m
* image data analaysis
* vector data editing
...

GRASS will be much easier to learn for beginners if we
can provide those tutorials.

Best regards
Soeren

jachym

My 2 cents. Craig

-------------

hallo,

On Mon, Oct 02, 2006 at 07:32:54PM +1300, Hamish wrote:

I'm thinking for a while now that it would be really nice to put
together a collection of articles showcasing the existing and new 3D
capabilities of GRASS 6 for an upcoming GRASS newsletter or special
edition.

for example:

* 3D vector processing
   - overview of GRASS's method: faces, kernels, etc
   - new 3D vector modules from Jachym (v.extrude etc)
   - some nice example (e.g. make a pyramid [see attached]),

Trento/NYC

* 3D raster processing
   - overview of GRASS's method: voxels, g.region -3, as a time

series, etc

   - new 3D raster modules from Sren
   - some nice example (e.g. do some quantitative analysis of sample
      Slovakia rain data)

* visualization with NVIZ, export to VTK etc
   - new NVIZ features by Massimo and Luigi, Bob, etc
   - v.in.onearth SRTM + LANDSAT -> i.landsat.rgb -> nviz (reader's

home)

etc., etc., etc.

(I'm a big fan of bite sized 10-15 minute tutorials...)

Hamish

if there is interest on this topic, i could prepare some tutorials out
of my presentations (fossgis in bonn, foss4g in lausanne). though i got
some positive feedback, i was never shure, if the presentations are good
start for such kind of tutorials.

when should next release of grass news come out?

thanks

jachym
--
Jachym Cepicky
e-mail: jachym.cepicky@centrum.cz
URL: http://les-ejk.cz
GPG:
http://les-ejk.cz/gnupg_public_key/jachym_cepicky-gpg_public_key.asc
----------------------------------------- OFFICE: Department of Geoinformation Technologies Zemedelska 3
613 00, Brno
Czech Republick
e-mail: xcepicky@node.mendelu.cz
URL: http://mapserver.mendelu.cz
Tel.: +420 545 134 514
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--
CW-405 Biological Sciences Blding
University of Alberta
Edmonton AB
T6G 2E9
Phone: 780-492-1289
Fax: 780-492-9234

_______________________________________________
grassuser mailing list
grassuser@grass.itc.it
http://grass.itc.it/mailman/listinfo/grassuser

------------------------------------------------------------------------

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4

Craig:

> Could these tutorials be actual MPEG movies showing screen captures
> of what was done? I've seen such kinds of tutorials put out by
> different companies (e.g., ESRI), but I don't know how difficult it
> would be to do or whether the resulting MPEG would be unmanageably
> large etc.

Jachym:

I would suggest use flash instead of mpegs

Instuctions for doing this posted to the GRASS lists in Feb:
  http://article.gmane.org/gmane.comp.gis.grass.devel/10772/
   From: Sören Gebbert
   Subject: Video tutorials
   Date: 2006-02-20

This may mean I need to install a flash player after all these years.
eek.

Jachym:

if there is interest on this topic, i could prepare some tutorials out
of my presentations (fossgis in bonn, foss4g in lausanne). though i
got some positive feedback, i was never shure, if the presentations
are good start for such kind of tutorials.

I think that would be great.

another 3D topic I am now reminded of: automatic generation of MPEG-1
and MPEG-4 (Xvid)* animations directly from NVIZ's keyframe animation
panel.

[*] requires "USE_XVID" compile time macro;
    buggy (it's a raw stream that displays with mplayer only)

Hamish

5

Il giorno mar, 03/10/2006 alle 16.16 +1300, Hamish ha scritto:

This may mean I need to install a flash player after all these years.
eek.

http://www.gnu.org/software/gnash/

At least, stay free. :wink:

Best,
Steko

--
Stefano Costa
http://www.iosa.it Software Open Source per l'Archeologia
Jabber: steko@jabber.linux.it
GnuPG Key ID 1024D/0xD0D30245
Linux Registered User #385969 counter.li.org

6

On question I have is how people have dealt with the audio track. Two
options seem possible. Record while capturing the screen as is
illustrated in one of the examples, or capture the audio at a later time
and use edit.py to add it in. Are there practical pros/cons to either
approach?

Also, does there exist something like "arecord" for windows to capture
the audio track? This linux user would appreciate some examples of how
screen and audio capture could be done on windows.

Cheers!
Craig

On Tue, 2006-10-03 at 01:37 +0200, Sören Gebbert wrote:

Hi,

Jachym Cepicky schrieb:
> On Mon, Oct 02, 2006 at 12:00:33PM -0600, Craig Aumann wrote:
>> Could these tutorials be actual MPEG movies showing screen captures of
>> what was done? I've seen such kinds of tutorials put out by different
>> companies (e.g., ESRI), but I don't know how difficult it would be to do
>> or whether the resulting MPEG would be unmanageably large etc.
>>
>
> I would suggest use flash instead of mpegs

Yes flash is a nice small format.
There is a free tool available to create flash
tutorials from a vnc session.

http://www.unixuser.org/~euske/vnc2swf/

There is a sample tutorial about r3.out.vtk available at:

http://www-pool.math.tu-berlin.de/~soeren/grass/modules/

It would be great if we can provide beginners tutorials
covering themes like:

* what is grass
* creation of a new location
* importing data into grass
* using gis.m
* image data analaysis
* vector data editing
...

GRASS will be much easier to learn for beginners if we
can provide those tutorials.

Best regards
Soeren

>
> jachym
>
>>
>> My 2 cents.
>> Craig
>>
>>
>>
>> -------------
>>
>> hallo,
>>
>> On Mon, Oct 02, 2006 at 07:32:54PM +1300, Hamish wrote:
>>> I'm thinking for a while now that it would be really nice to put
>>> together a collection of articles showcasing the existing and new 3D
>>> capabilities of GRASS 6 for an upcoming GRASS newsletter or special
>>> edition.
>>>
>>> for example:
>>>
>>> * 3D vector processing
>>> - overview of GRASS's method: faces, kernels, etc
>>> - new 3D vector modules from Jachym (v.extrude etc)
>>> - some nice example (e.g. make a pyramid [see attached]),
>> Trento/NYC
>>> * 3D raster processing
>>> - overview of GRASS's method: voxels, g.region -3, as a time
>> series, etc
>>> - new 3D raster modules from Sren
>>> - some nice example (e.g. do some quantitative analysis of sample
>>> Slovakia rain data)
>>>
>>> * visualization with NVIZ, export to VTK etc
>>> - new NVIZ features by Massimo and Luigi, Bob, etc
>>> - v.in.onearth SRTM + LANDSAT -> i.landsat.rgb -> nviz (reader's
>> home)
>>> etc., etc., etc.
>>>
>>>
>>> (I'm a big fan of bite sized 10-15 minute tutorials...)
>>>
>>>
>>> Hamish
>> if there is interest on this topic, i could prepare some tutorials out
>> of my presentations (fossgis in bonn, foss4g in lausanne). though i got
>> some positive feedback, i was never shure, if the presentations are good
>> start for such kind of tutorials.
>>
>> when should next release of grass news come out?
>>
>> thanks
>>
>> jachym
>> --
>> Jachym Cepicky
>> e-mail: jachym.cepicky@centrum.cz
>> URL: http://les-ejk.cz
>> GPG:
>> http://les-ejk.cz/gnupg_public_key/jachym_cepicky-gpg_public_key.asc
>> -----------------------------------------
>> OFFICE:
>> Department of Geoinformation Technologies
>> Zemedelska 3
>> 613 00, Brno
>> Czech Republick
>> e-mail: xcepicky@node.mendelu.cz
>> URL: http://mapserver.mendelu.cz
>> Tel.: +420 545 134 514
>> -------------- next part --------------
>> A non-text attachment was scrubbed...
>> Name: not available
>> Type: application/pgp-signature
>> Size: 191 bytes
>> Desc: Digital signature
>> Url :
>> http://grass.itc.it/pipermail/grassuser/attachments/20061002/c065fd51/attachment.bin
>>
>>
>>
>> --
>> CW-405 Biological Sciences Blding
>> University of Alberta
>> Edmonton AB
>> T6G 2E9
>> Phone: 780-492-1289
>> Fax: 780-492-9234
>>
>> _______________________________________________
>> grassuser mailing list
>> grassuser@grass.itc.it
>> http://grass.itc.it/mailman/listinfo/grassuser
>
>
> ------------------------------------------------------------------------
>
> _______________________________________________
> grassuser mailing list
> grassuser@grass.itc.it
> http://grass.itc.it/mailman/listinfo/grassuser

--
CW-405 Biological Sciences Blding
University of Alberta
Edmonton AB
T6G 2E9
Phone: 780-492-1289
Fax: 780-492-9234

7

> >> Could these tutorials be actual MPEG movies showing screen
> >captures of what was done? I've seen such kinds of tutorials
> >put out by different companies (e.g., ESRI), but I don't know how
> >difficult it would be to do or whether the resulting MPEG would
> >be unmanageably large etc.
> >
> > I would suggest use flash instead of mpegs
>
> Yes flash is a nice small format.
> There is a free tool available to create flash
> tutorials from a vnc session.
>
> http://www.unixuser.org/~euske/vnc2swf/

..
Craig Aumann wrote:

On question I have is how people have dealt with the audio track. Two
options seem possible. Record while capturing the screen as is
illustrated in one of the examples, or capture the audio at a later
time and use edit.py to add it in. Are there practical pros/cons to
either approach?

no idea for the flash animations, but for MPEG: (mjpegtools)

mplex video_stream audio_stream -o with_audio.mpg

Also, does there exist something like "arecord" for windows to capture
the audio track? This linux user would appreciate some examples of how
screen and audio capture could be done on windows.

"Audacity" is platform independent for sound capture.

Hamish