Thanks for the info.  Just what I needed.

POVRAY wrote:

> Works just like the time on a clock.  The smaller the distance (angle on
> a sphere in this case), the greater the resolution.  Therefore, a 7.5
> minute dem would have a greater resolution than a 15 minute, and a 2 arc
> second would have even more.
>
> -Mike
>
> Denjor wrote:
>
> > What exactly is the difference between the different types of dems?
> > Resolution?  if so, which is the highest in res?
> >     I'm talking about the 7.5 minute, or the 15 minute, or the 2 arc
> > second, or the 1 arc second.

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