[GRASS-user] NVIZperspective

[Markus Neteler]

Hi Annalisa,

On Tue, Jul 14, 2009 at 9:36 AM, Annalisa Minelli<annagrass6 at gmail.com> wrote:
> Hello All,
> I'm trying to do some simulation of view in NVIZ and I have to look an
> object at a fix distance from a fix point.. so I usually use the "position"
> panel (where I can set coords and elevation of the two points) but sometimes
> it happens that when you obtain this view you see some white space under
> your "feet" so I tried to avoid this modifying the perspective parameter
> (slide in the main panel).
> Doing this I noted that if I modify the perspective parameter the distance
> of observation changes; what does this angle represent? who can explain me
> its specific meaning? and why if I increase/diminish it the observed object
> goes/comes far/near?

the tcltk nviz isn't "the future", perhaps you could try the new nviz based
on python? It can be controlled via command line which might help a lot.

Markus