[GRASS5] nviz crashing in pre1

[Helena]

Bob,

on a second look you may be right that the crash could be the the result of the
calculations
which set the z-scale, view height and other initial settings. The initial
values are computed (or set?) when
the interface opens even without any data, so if there is an undefined variable
it may depend on what is in that
variable at the time when nviz is opened whether it crashes or not.

Helena

Covill wrote:

> Markus Neteler wrote:
> >
> > Thanks for your quick response, Bob.
> >
> > ------------------------------------------------
> >
> > Aha "funny":
> > - it crashes if the map region contains only NULL data values (should
> >   gracefully exit here). Above happened when I was (accidentally) working
> >   in a NULL data area in "nations" map.
> >
> > Maybe that's another bug. Helena, are you sure that your map contains data
> > when crashing with NVIZ?
> >
> > Markus
> > _______________________________________________
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>
> Markus,
>
> It sounds like the crash (that you are seeing) may be the result of one
> of the calculations performed on the dataset.  When data is loaded
> things like vertical exxageration, etc are caculated from the data.
>
> As you noted above, it obviously does not like like having any data
> (NULL) to load. This problem could probably be tracked down and caught
> before it crashes.
>
> --
> Bob Covill
>
> Tekmap Consulting
> P.O. Box 2016 Fall River, N.S.
> B2T 1K6
> Canada
>
> E-Mail: bcovill at tekmap.ns.ca
> Phone: 902-860-1496
> Fax: 902-860-1498
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