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Subject: Re: Using colour to indicate response intensity

According to my understanding of your problem, I think you should do
take a line plotting algorithm to lenearly scale color range to the
number range you have.
the equation would be : m= (y2-y1)/(x2-x1)= (y-y1)/(x-x1)
let y axis be colour intensity range(eg: y1=0..y2=255) and x axis be
the number range (x1=min..x2=max), so you can calculate m first
then you have the number n i.e min<=n<=max, now put x=n and using the
above equation get the color intensity y.
i.e y=m*(x-x1)+y1,
hence you map the color range lenearly to number range.


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