[GRASSLIST:1010] NVIZ: 1m topo map over an SRTM

GRASS GRASS user
1

Hi,

Would it be possiblle to display a topo map of resolution 1m over an 90m
DEM, preserving both the full map resolution and the smooth surface
experience, not having to resample DEM to 1m first?

I can't find such a functionality in NVIZ, but maybe it is hidden
somewher deep there?

Any ideas?

Thanks,
Maciek

--------------------
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2

On Fri, May 05, 2006 at 12:45:11PM +0200, Maciek Sieczka wrote:

Hi,

Would it be possiblle to display a topo map of resolution 1m over an 90m
DEM, preserving both the full map resolution and the smooth surface
experience, not having to resample DEM to 1m first?

I can't find such a functionality in NVIZ, but maybe it is hidden
somewher deep there?

Any ideas?

Thanks,

Maciek,

g.region rast=topo -p
nviz srtm col=topo

BUT: will look horrible (nice stairs). So resampling is needed:

g.region rast=topo
r.resamp.rst srtm ... ew=1 ns=1
g.region rast=topo -p
nviz srtm_1m col=topo

Markus

3

On Fri, 5 May 2006 13:22:09 +0200
Markus Neteler <neteler@itc.it> wrote:

On Fri, May 05, 2006 at 12:45:11PM +0200, Maciek Sieczka wrote:
> Hi,
>
> Would it be possiblle to display a topo map of resolution 1m over
> an 90m DEM, preserving both the full map resolution and the smooth
> surface experience, not having to resample DEM to 1m first?
>
> I can't find such a functionality in NVIZ, but maybe it is hidden
> somewher deep there?
>
> Any ideas?
>
> Thanks,

Maciek,

g.region rast=topo -p
nviz srtm col=topo

BUT: will look horrible (nice stairs).

I know.

So resampling is needed:
g.region rast=topo
r.resamp.rst srtm ... ew=1 ns=1
g.region rast=topo -p
nviz srtm_1m col=topo

That's what I want to avoid :).

Other words:

I want to display a 1m topo draped over a 90m DEM. Without having to
resample 90m to 1m first but avoiding "nice stairs" too.

Like if DEM was an object and the topo was a texture. Like in our
favorite computer games.

Impossible?

Maciek

--------------------
W polskim Internecie s? setki milion?w stron. My przekazujemy Tobie tylko najlepsze z nich!
http://katalog.panoramainternetu.pl/