range01: Shrink or stretch a vector to make it range between 0 and 1
Description
This function re-scales a numeric vector so that it ranges between 0 and 1. So, the lowest value becomes 0, the highest becomes 1, and the ones in the middle retain their rank and relative diference.
Usage
range01(x, na.rm = TRUE)
Value
A numeric vector of the same length as the input, now with the values ranging from 0 to 1.
Arguments
x
a numeric vector.
na.rm
logical, whether to remove NA values.
Author
A. Marcia Barbosa
Details
This function was borrowed from http://stackoverflow.com/questions/5468280/scale-a-series-between-two-points-in-r/5468527#5468527 and adapted to handle also missing values.