Hamish: I looked at that before and the only thing I could think of was to use r.to.rast3 by first generating a whole series of horizontal surfaces with r.mapcalc, one for each foot of elevation, with each cell getting a value of "1" if the "elevation" for that particular new surface lied between the corresponding cell values of the top and bottom surfaces. Then taking those whole bunch of surfaces and feeding them to r.to.rast3. But that seemed pretty inelegant. But it may be only way to do it. I would only be about 25 rasters to generate and then merge.
J.S. On Sun, 20 Feb 2011 17:14:39 -0800 (PST), "Hamish" <[email protected]> said: > J.S. wrote: > > I want to generate a 3D raster (and display in nviz) that is > > the volume between two 2D elevation rasters. The application > > is to visualize the subsuraface area that will be subject to > > environmental remediation. > > maybe this summary helps, > http://grass.osgeo.org/wiki/Help_with_3D > > > Hamish > > > > _______________________________________________ grass-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-user
