On Sep 14, 2007, at 12:13 AM, Hamish wrote:
Michael Barton wrote:
I finished updating the new TclTk animation module and committed
it to
the cvs. It does pretty much what xganim did, but with somewhat nicer
interface. It also has several important improvements over xganim.
One thing I have wanted in a GRASS animation tool is the ability to
take
a 3D raster block and animate through the z-layers without having
to do
run r3.to.rast first then remove all the sections after.
we have included few examples of such use of xganim in the new GRASS
book -
I have found it very useful for pre-viewing the volume data in a
quick and efficient way
before going into nviz - probably a script could be written to
automate the procedure.
I have also used d.slide.show along with xganim. So a script - volume
slicer? - that will
either slice through the volume using xganim or display the slices as
a series of still slides
would be really useful
Helena
one of the (very simple) examples from the book using the nc_spm data
# create a volume
g.region rural_1m res3=3 t=132 b=102 tbres=2 -ap3
r.to.rast3elev -l soils_Kfactor elev=elev_lid792_1m out=soils_Kvol
r3.info soils_Kvol
# convert to horiz. slices and display
r3.to.rast soils_Kvol out=soils_Kvolslice
d.slide.show soils_Kvolslice
xganim view1="soils_Kvolslice*"
Especially if the
z-axis represents a time-series. A more advanced version could slide
through the x or y axis, or, if you want to get really tricky,
normal to
an arbitrary plane. Maybe the fancy stuff is better left for nviz
cutting
planes and just try for the z-layers.
Hamish
_______________________________________________
grass-dev mailing list
[email protected]
http://grass.itc.it/mailman/listinfo/grass-dev
_______________________________________________
grass-dev mailing list
[email protected]
http://grass.itc.it/mailman/listinfo/grass-dev
