Thanks. This is helpful for some ideas. Although, it uses a vertical scale that is just a constant of 65535. But, my followup email probably crossed with yours.
--Adam On Nov 3, 2010, at 4:22 AM, Markus Neteler wrote: > 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> _______________________________________________ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user