clipka wrote:
> PGM (maxval <= 255)
> PGM (maxval <= 65535)
> PPM (maxval <= 255)
> PPM (maxval <= 65535)
> (Again, are these actually still relevant these days?)

I use PPM's from time to time - they are so simple to write that I don't 
need any libraries and can create them from any language I choose.

They are even easier if you use the ASCII versions.
I'm off on holiday in 2hrs time for a week so can't supply images now 
:-( I think sleep is needed.

I do know that many programs - possibly including POV 3.6 impose some 
non-standard restrictions on the format of the ascii header. The spec - 
such as it is - specifies that the various items of header only need to 
be separated by white space, but several implementations say that 
certain bits of header need to be separated by newlines and that certain 
other bits need to be on the same line. Obviously the ideal 
implementation would read anything but write in the normal layout.

If you've not got these in a week and still have a use for them I'll see 
what I can do. Thanks for the work you're putting in here.

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