[GRASSLIST:9393] Re: view surface ffrom below in NVIZ

[Carlos "Guâno" Grohmann]

thanks Ian, that helped.

On 12/8/05, Ian MacMillan <ian_macmillan at umail.ucsb.edu> wrote:
> 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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>
>


--
+-----------------------------------------------------------+
              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