[GRASSLIST:9382] Re: view surface ffrom below in NVIZ

[Ian MacMillan]

Carlos, this is a known problem with NVIZ (see GRASSLIST:9174).
http://grass.itc.it/pipermail/grassuser/2005-November/031305.html

A workaround is to use the twist slider to swing your inverted image 
around.

G'lcuk,
-Ian


On Dec 8, 2005, at 6:49 AM, Carlos Guâno Grohmann wrote:

> So, after some workaround I managed to get my cave data into GRASS,
> and I can visualize it in NVIZ. The thin is, since it is a cavern, I'd
> like to view it from below the topographic surface, but when I change
> the Height in NVIZ to a value smaller than the minimum of the surface,
> the surface is flipped upside down. NVIZ inverts the situation, so I
> end up looking a upside down surface from above, not a correct durface
> from below. See the attached files. In the first image, the cave is
> below the surface, but with a small change in height, I get the second
> image, with the cave above the "inverted"surface.
>
> any help will be appreciated.
>
>
> thanks
> --
> +-----------------------------------------------------------+
>               Carlos Henrique Grohmann - Guano
>   Geologist M.Sc  - Doctorate Student at IGc-USP - Brazil
> Linux User #89721  - carlos dot grohmann at gmail dot com
> +-----------------------------------------------------------+
> _________________
> "Good morning, doctors. I have taken the liberty of removing Windows
> 95 from my hard drive."
> --The winning entry in a "What were HAL's first words" contest judged
> by 2001: A SPACE ODYSSEY creator Arthur C. Clarke
> <nviz_cave_below.jpg><nviz_cave_above.jpg>
 >
 >
What happens if a big asteroid hits Earth? Judging from realistic 
simulations involving a sledge hammer and a common laboratory frog, we 
can assume it will be pretty bad.
  - Dave Barry


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