"Wolfgang Wieser" <wwi### [at] gmxde> wrote in message
news:40127b1e@news.povray.org...
 >
> There is no problem with the interpretion of the tiles and their formats.
> I have been using a self-written program to convert the 4x4 tile map
> row-by-row into two full-sized and scaled-down grayscale PNGs.
> See: http://www.cip.physik.uni-muenchen.de/~wwieser/render/img/mars/
>
> It's just that I got a bit confused about the coordinate system on

> (NASA) so I was not sure if everybody was using the same zero
> meridian. But from searching the net and comparing the names of the
> locations (Isidis Planitia, etc) to pixel locations on the spherical
> projections, I now think I can correctly locate the landing sites on
> the map.

Yeah, I noticed ESA and NASA seemed to be switching it around. You have a
great web page about rendering Mars with POV-Ray. Does your custom
conversion have more than 8 bits for elevation? I searched around but the
grayscale maps or other elevation maps I find don't seem to say much about
it.

Bob H.

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