Wolfgang Wieser wrote:
> 
> [...]
> Topo is 1/60 degree, hence 21600 x 10800 pixels, i.e. 222 mega-pixels.
> Thus, I need 444 Mb of height data (it's 2 byte).
> Adding 1/30 degree RGB color, 10800 x 5400 x 3 = 167 Mb
> Together, that's 611 Mb.
> POVRay actually uses 620 Mb VM (according to the kernel).

All right, my quick estimate was a bit high.  I remembered that the data
of my renders i posted the link for would have taken more than 3 Gb as a
whole but i use 1 km resolution for both the topography and the coloring
(and clouds in some cases).

> > I'd strongly reduce the height exaggeration (with 2 km grid 5x-10x should
> > give quite pleasant results)
> >
> Hmm... Maybe I'll give it a try.
> My Mars images use height exaggeration of 10. But Mars has more
> extreme topography.
> 
> http://www.cip.physik.uni-muenchen.de/~wwieser/render/img/mars/
> (Take the 2048x1536 JPEG to see the craters.)

I did mars as well:

news://news.povray.org/3EC752E4.FCFDBF5D%40gmx.de
http://news.povray.org/povray.binaries.images/31675/225014/#225014

This is without exaggeration of height (but again twice the resolution for
the topography).

Christoph

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