Adam, find attached my (old) r.out.povscript script which does the needed calculations. Perhaps giving some ideas. the Povray scales are a bit tricky.
cheers Markus On Wed, Oct 27, 2010 at 6:07 PM, Adam Dershowitz, Ph.D., P.E. <adershow...@exponent.com> wrote: > I have been trying to use r.out.pov but something is not clear to me from the > documentation, and examples I can find on the web. > If I use hftype=0 (the default) then, as I understand it it, each step, from > 0-65535 represents one map unit (meters in my case). That is giving me too > much "stair-stepping" in POVRAY. > I think that part of the issue is that there is too much rounding of > elevations. So, I decided to try hrtype=1. As I understand it that will > scale the height of the image to use more of the range (my map just goes from > 61-1086 meters). But, I can't seem to figure out how much it scales by. > There is also the scale= option in r.out.pov, but I am not sure if that is a > multiplier or a divider? > This is important because I need to then scale the heighfield in my POV file. > If I use hrtype=0 then this is correct: > scale < dx, 65535, dy > > > But, if I use hftype=1, what is the correct value for the above scale > command? Is it 65535/1086 (max height in the map?) > 65535/(1086-61) (vertical range of my map?) > > If I use scale=10 then should it be? > scale < dx, 65535/10, dy > > scale < dx, 65535*10, dy > > scale < dx, 10, dy > > > Or should I use scale=0.1? Or should I use r.out.pov scale=65535/1086 > > Thanks, > > --Adam > > > > _______________________________________________ > grass-user mailing list > grass-user@lists.osgeo.org > http://lists.osgeo.org/mailman/listinfo/grass-user >
r.out.povscript
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