[GRASS-user] NVIZperspective

Annalisa Minelli annagrass6 at gmail.com
Thu Jul 16 05:41:49 EDT 2009

Thanks Markus,
I'll try and see if it this way can clear up my theoretical-doubts.:)


2009/7/15 Markus Neteler <neteler at osgeo.org>

> 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
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