Two things is all, I think. eval is now evaluate and you'll need to use the
dot vector of your imageMap function. Example:

imageMap(x,y,z).gray*rs

Look up evaluate in the help, it takes three parameters. Checking the Scene
Help myself... maybe a read at section 3.6.3.6 noise and pigment functions
will also help.
Another keyword I see you hadn't used is 'accuracy' although I think maybe
that was already in MegaPOV.

P.S. http://www.econym.demon.co.uk/isotut/  is working okay for me.
--
Farewell,
Bob

"normdoering" <nor### [at] yahoocom> wrote in message
news:web.3da7c4958dccf4e514e415dd0@news.povray.org...
>
> I use to do the image map stuff with megaPOV, but that code doesn't work
> with POV 3.5, at least the version I downloaded a few months ago (I
> think?).

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