POV-Ray : Newsgroups : povray.binaries.images : DEM with topo overlay (1600x1200; 509 k) : Re: DEM with topo overlay (1600x1200; 509 k) Server Time
13 Aug 2024 15:22:12 EDT (-0400)
  Re: DEM with topo overlay (1600x1200; 509 k)  
From: William F  Pokorny
Date: 20 Feb 2003 11:01:05
Message: <3E54FBC1.BAADA01C@attglobal.net>
Tim, 
Perhaps not so odd. I vaguely remember something about topo data being projected
onto a plane and DEM data following the curve of the earth. There are also a
couple of standards for representation of DEM data which differ. Maybe someone
who really knows will enlighten us. 
Regards, Bill P.  

> 
> oddly, the topographic map doesn't match up with the
> DEM and has to be extensively compensated for distortion


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