I have updated the videos for wxnviz including working with multiple surfaces, 
color draping and adding a constant surface
and cutting planes here:
http://courses.ncsu.edu/mea582/common/GIS_anal_grass/GIS_Anal_grvisual.html
you can see there wxnviz and old nviz side-by-side.

I will re-do the videos once we have a final release of 6.4.3

The only thing that you need to be aware of is that in GRASS6 change in region 
is ignored by wxnviz - it always
uses the region which was set when you first switched to it. You need to quit 
wxgui, change region and restart wxgui.
In GRASS7 region can be changed - one more reason to have GRASS7 pre-release.

Anna please correct me if I am wrong in anything above.

I hope this helps, Helena


Helena Mitasova
Associate Professor
Department of Marine, Earth, and Atmospheric Sciences
2800 Faucette Drive, Rm. 1125 Jordan Hall
North Carolina State University
Raleigh, NC 27695-8208
[email protected]

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be disclosed to third parties.” 

On May 26, 2013, at 7:16 AM, Markus Metz wrote:

> On Sun, May 26, 2013 at 11:21 AM, Anna Petrášová <[email protected]> 
> wrote:
>> 
>> 
>> 
>> On Sun, May 26, 2013 at 11:08 AM, Markus Metz
>> <[email protected]> wrote:
>>> 
>>> On Sun, May 26, 2013 at 10:32 AM, Anna Petrášová <[email protected]>
>>> wrote:
>>>> 
>>>> The problem why you don't see anything when you load both maps is that
>>>> flowacc has large extreme values, so the initial view is confused.
>>>> Anyway
>>>> you should be able see something when you adjust the view to some normal
>>>> height.
>>> 
>>> That means I can not change the raster map to be used as surface?
>>> Because I see that two different surfaces are used after updating,
>>> resetting, and changing height to a reasonable value, even though only
>>> one surface map is given. BTW, nviz in 6.x accepts multiple raster
>>> maps as surfaces.
>>> 
>> Sorry, I don't really understand what you mean. You can display more
>> surfaces, you can unload (uncheck or remove) surface and add new.
> 
> OK, got it. All active raster maps in the layer manager are loaded as 
> surfaces.
> 
> Markus M
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