[GRASS-dev] wxGUI GRASS 7: how to drape a map over a DEM?

[Anna Petrášová]

On Sun, May 26, 2013 at 3:47 PM, Helena Mitasova <hmitaso at ncsu.edu> wrote:

> I have updated the videos for wxnviz including working with multiple
> surfaces, color draping and adding a constant surface
> and cutting planes here:
> http://courses.ncsu.edu/mea582/common/GIS_anal_grass/GIS_Anal_grvisual.html
> you can see there wxnviz and old nviz side-by-side.
>
> I will re-do the videos once we have a final release of 6.4.3
>
> The only thing that you need to be aware of is that in GRASS6 change in
> region is ignored by wxnviz - it always
> uses the region which was set when you first switched to it. You need to
> quit wxgui, change region and restart wxgui.
> In GRASS7 region can be changed - one more reason to have GRASS7
> pre-release.
>
> Anna please correct me if I am wrong in anything above.
>

Agreed. As far as I remember it was not easy to backport the relevant part
of code in core library, at least for me.

Anna


>
> I hope this helps, Helena
>
>
> Helena Mitasova
> Associate Professor
> Department of Marine, Earth, and Atmospheric Sciences
> 2800 Faucette Drive, Rm. 1125 Jordan Hall
> North Carolina State University
> Raleigh, NC 27695-8208
> hmitaso at ncsu.edu
>
> "All electronic mail messages in connection with State business which are
> sent to or received by this account are subject to the NC Public Records
> Law and may be disclosed to third parties.”
>
> On May 26, 2013, at 7:16 AM, Markus Metz wrote:
>
> > On Sun, May 26, 2013 at 11:21 AM, Anna Petrášová <kratochanna at gmail.com>
> wrote:
> >>
> >>
> >>
> >> On Sun, May 26, 2013 at 11:08 AM, Markus Metz
> >> <markus.metz.giswork at gmail.com> wrote:
> >>>
> >>> On Sun, May 26, 2013 at 10:32 AM, Anna Petrášová <
> kratochanna at gmail.com>
> >>> wrote:
> >>>>
> >>>> The problem why you don't see anything when you load both maps is that
> >>>> flowacc has large extreme values, so the initial view is confused.
> >>>> Anyway
> >>>> you should be able see something when you adjust the view to some
> normal
> >>>> height.
> >>>
> >>> That means I can not change the raster map to be used as surface?
> >>> Because I see that two different surfaces are used after updating,
> >>> resetting, and changing height to a reasonable value, even though only
> >>> one surface map is given. BTW, nviz in 6.x accepts multiple raster
> >>> maps as surfaces.
> >>>
> >> Sorry, I don't really understand what you mean. You can display more
> >> surfaces, you can unload (uncheck or remove) surface and add new.
> >
> > OK, got it. All active raster maps in the layer manager are loaded as
> surfaces.
> >
> > Markus M
> > _______________________________________________
> > grass-dev mailing list
> > grass-dev at lists.osgeo.org
> > http://lists.osgeo.org/mailman/listinfo/grass-dev
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/grass-dev/attachments/20130526/8fd496a8/attachment.html>