I'm looking for a heightfield for the entire US of A, or at least the contiguous
48 states.  Right now I appear to have two options.

I've done several searches and most of the time I get lots of USGS info... these
are really to high a resolution for my needs.  But I *could* download *all* of
the DEM files and stitch them together then reduce the resolution (ewww... I
don't think I've got the HD space or the memory)

I could also take one of the higher res. whole earth pictures I've found and
just cut out the US.  But the problem with that is two-fold.  1) too *low*
resolution.  2) improper projection for a decent rendering of US (although I
could cut from a mapped spherical isosurface)

Any suggestions?

Thanks,
Michael
--
#macro M(D)#local J=strlen(D);#local _=""#while(J>0)#local _=concat(_,substr(D
,J,1))#local J=J-1;#end _#end sphere{z*9,5pigment{rgb x}}#macro N(D,J)text{ttf
"timrom.ttf"M(D)1,0 translate-J}#end#macro O(E,K)#local _=N(E,K)light_source{-
z*9rgb 1projected_through{_}}#end O("leahciM"<1.6,-.3.9>)O("nosnhoJ"<1.6.9.9>)

Post a reply to this message