I have a vector X that contains positive numbers that I want to bin/discretize. For this vector, I want the numbers [0, 10) to show up just as they exist in the vector, but numbers [10,∞) to be 10+.
I'm using:
x <- c(0,1,3,4,2,4,2,5,43,432,34,2,34,2,342,3,4,2)
binned.x <- as.factor(ifelse(x > 10,"10+",x))
but this feels klugey to me. Does anyone know a better solution or a different approach?
Answer
How about cut:
binned.x <- cut(x, breaks = c(-1:9, Inf), labels = c(as.character(0:9), '10+'))
Which yields:
# [1] 0 1 3 4 2 4 2 5 10+ 10+ 10+ 2 10+ 2 10+ 3 4 2
# Levels: 0 1 2 3 4 5 6 7 8 9 10+