Clip values between a minimum and maximum allowed value in R

Question

In Mathematica there is the command Clip[x, {min, max}] which gives x for min<=x<=max, min for x

Answer 1

Here's one function that will work for both vectors and matrices.

myClip <- function(x, a, b) {
    ifelse(x <= a,  a, ifelse(x >= b, b, x))
}

myClip(x = 0:10, a = 3,b = 7)
#  [1] 3 3 3 3 4 5 6 7 7 7 7

myClip(x = matrix(1:12/10, ncol=4), a=.2, b=0.7)
# myClip(x = matrix(1:12/10, ncol=4), a=.2, b=0.7)
#      [,1] [,2] [,3] [,4]
# [1,]  0.2  0.4  0.7  0.7
# [2,]  0.2  0.5  0.7  0.7
# [3,]  0.3  0.6  0.7  0.7

And here's another:

myClip2 <- function(x, a, b) {
    a + (x-a > 0)*(x-a) - (x-b > 0)*(x-b)
}

myClip2(-10:10, 0, 4)
# [1] 0 0 0 0 0 0 0 0 0 0 0 1 2 3 4 4 4 4 4 4 4