How to make "rainbow" RGB values?

[Simon Forman]

On Feb 24, 5:09 pm, Andrew McNamara <andr... at object-craft.com.au>
wrote:
> >I want to map an int to a color on a rainbow spectrum, i.e. for an int
> >n in the range 0..N, low values (near 0) should map to the red end,
> >and high values (near N) to the blue/violet end.
> [...]
> >I've tried a simple scheme of overlapping sines, but this resulted in
> >too much red and blue, and no indigo/violet.
>
> Consider using an HSV->RGB conversion function. Saturation (S) and value
> (V) should remain constant, while Hue (H) varies to get your rainbow
> effect.
>
> --
> Andrew McNamara, Senior Developer, Object Crafthttp://www.object-craft.com.au/

Hey thank you very much, that worked like a charm!  :]

There's even a library function in the colorsys module (http://
docs.python.org/lib/module-colorsys.html)

Cheers,
~Simon