Question

If I have a vector

vec = c('a','a','a','b','b','c','c','c','c','c')

Is there a simple way to find the least occurring element in vec? Thanks!

Edit: is there a simple way to do it with characters?

Answer 1

This should work, even if more than one of the elements is tied as the least frequent item:

vec = c(1,1,1,2,2,3,3,3,3,3)

f <- table(vec)
as.numeric(names(f[f == min(f)]))
# [1] 2