stevieb: pyrt's equation #XIII# is the key here.

I am probably labouring the point, but the process is to subtract the input min and divide by the input range to normalise into the interval 0,1, then rescale the result to the new range and shift it to the new minimum.

Another way of describing it is that it is four steps of shift, scale, rescale, and re-shift.

In reply to Re^7: Normalizing a range of numbers to a percentage by swl
in thread Normalizing a range of numbers to a percentage by stevieb

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