Hi,
Biswajit Ghoshal wrote:
>
> Hi David,
>
> What is the equation between x, y and z? This is a typical problem of
> curve-fitting. You must know z's highest and lowest values (even if they
> are +/- infinities), which will correspond to 1 and 0 values of R; and 0 and
> 1 for B; G will always be 0. Also z's values will be directly proportional
> to Blue and inversely proportional to Red. G will remain 0 throughout. I
> think that's all about the idea.
But then you would get some grey for medium z-values, don't you? You
should think about what color the medium z-values should have and
interpolate between these three points. for example:
z_min : R = 0, G = 0, B = 0
z_mid : R = 1, G = 0, B = 1
z_max : R = 0, G = 0, B = 1
That way you get violett for medium temperatures (if that is what you
desire :-)
Best Regards,
Andreas
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