map.exp: A function to map values in a range exponentially
Description
This function maps a value in one range to another range exponentially.
Usage
map.exp(value, start1, stop1, start2, stop2, scale = 0.5)
Arguments
start1
lower bound of the value's current range
stop1
upper bound of the value's current range
start2
lower bound of the value's taget range
stop2
upper bound of the value's target range