> I need to make a chart displaying each Region as a small box (say 10x10 pixels) with 
>a color of the given greyscale value.
> Plane in this case refers to the vertical axis of the chart. So the chart would 
>display several thousand little boxes,
> where all the ones from Plane 1 are in one vertical line, Plane 2 the next 10 pixels 
>over, etc.

you might be better off writing a small program in C that takes that data
and writes a PPM image. (very basic image format) which you can then load
into GIMP and play with...any friends on a computing course you know? 


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