[GRASS-dev] missing volumes in NVIZ

[Michael Barton]

I¹m trying to create a volume using r.to.rast3 and display it in NVIZ. I¹ve
got 6 versions of a 600x500 map at 90m resolution. The 6 versions are from
9000, 9200, 9400, 9600, 9800, and 10000 years ago. So I¹ve tried the
following settings using g.region.

bottom=0
top=6
resolution=1

bottom=0
top=600
resolution=100

bottom=9000
top=10200
resolution=200

All of these give me 6 depths that make sense, given the resolution
settings, in r3.info after running r.to.rast3.

The values range from ­2000 to 2000 roughly, but most are in the 0-500
range. So I¹ve picked isosurfaces of 10, 50, 100, 400, 1000, and even 9500.
None show up. I see the volume ³box² as a flat rectangle (i.e., no vertical
depth), but nothing in it.

Any suggestions as to what I¹m doing wrong here? I¹ve done this before and
it seemed to work with no problems.

Michael
__________________________________________
Michael Barton, Professor of Anthropology
School of Human Evolution & Social Change
Center for Social Dynamics and Complexity
Arizona State University

phone: 480-965-6213
fax: 480-965-7671
www: http://www.public.asu.edu/~cmbarton 

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