[plt-scheme] processing large images...

Dan Anderson wrote:

> I'm at the point now where I really need raw
> processing speed for large images. I'm looking at
> using a representation and I was wondering if someone
> else might have a representation that they think will
> work faster before I go through with the programming.

Depending on the nature of your processing, the bitmap-dc% class as 
described in the MrEd Graphical Toolbox Manual may be an alternative. 
But I have no clue as to whether it's potentially faster than 
manipulating pixel lists. --PR