[GRASSLIST:9380] view surface ffrom below in NVIZ

[Carlos "Guâno" Grohmann]

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
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