> I'm currently trying to write an algorithm to count the changes in slope on my
> interpolation graph, and I really wish there was a way to either access
> out-of-range color_map values, or to easily process an include file to scale the
> index values to between 0 and 1.

Now I see, this is a serious research. IMHO, interpolation graph analysis may
become too complicated, as so many factors have influence.

Possible, text processing will be easier to implement, selecting good enough
instruments.

Good luck with it !
--
YB

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