Convert vector of 0 and 1 to binary vector in R

Question

It is quite surprise to me that I could not find a ready answer for this question on stackoverflow.

In R, I have a vector of 0 and 1, and I wan

Answer 1

My comment should have been an answer. You can just do:

as.logical(c(0,1,1,0))

Answer 2

We can use !=

c(0,1,1,0)!=0
#[1] FALSE  TRUE  TRUE FALSE

Answer 3

If the object size in memory is important (TRUE or FALSE are 56 bits size) a good option is the bit package, that can turn TRUE or FALSE values in a vector in to a 1 bit values vector.

Answer 4

We can use !!:

rep(0:1, 5)
[1] 0 1 0 1 0 1 0 1 0 1

!!rep(0:1, 5)
[1] FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE FALSE  TRUE

All 0s will be converted to FALSE, any other numeric to TRUE.