Mapping a range of values to another

Question

I am looking for ideas on how to translate one range values to another in Python. I am working on hardware project and am reading data from a sensor that can return a range

Answer 1

def maprange(a, b, s):
    (a1, a2), (b1, b2) = a, b
    return  b1 + ((s - a1) * (b2 - b1) / (a2 - a1))


a = [from_lower, from_upper]
b = [to_lower, to_upper]

found at https://rosettacode.org/wiki/Map_range#Python_

• does not clamp the transformed values to the ranges a or b (it extrapolates)
• also works when from_lower > from_upper or to_lower > to_upper