Very Computer

1. an RGB false-color spectrum

Hi, can anyone provide a pointer to an algorithm which will produce a
false-color representation of a range of integers?  I'm thinking of a
false-color spectrum representing elevation, like the one used in the recent
color digital elevation map created of MARS by laser rangefinding.

Essentially, the problem is this:  Given a normalized elevation range, say
from 1-256, is there a convenient algorithm available to produce RGB values
which will produce more-or-less visually equal spacing on a color "spectrum?"

I realize there is no simple straight path through the RGB color cube which
will produce a perfectly visually ordered transitional set of colors.  But is
there one that is even close?

Thanks in advance for your help...

Nick

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