[R] unique vs duplicate problem

[Nico902]

Hi,

Let say I have a numeric vector:   x <- c(1, 2, 3, 3).

I want on one hand numbers which are not duplicated ie "1,2" and duplicated
"3".

so I did:

>duplicated(x)
FALSE FALSE FALSE TRUE
> unique(x)
1 2 3

which is not what I want. Is there a function in R to have the following
result:

>duplicated(x)
FALSE FALSE TRUE TRUE
>unique(x)
1 2

I could do it by programming some loops but I reckon somebody programmed a
function already.

Cheers.



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