[R] unique vs duplicate problem

[Rui Barradas]

Hello,

Maybe this function.


fun <- function(x) x %in% x[duplicated(x)]

x <- c(1, 2, 3, 3)
fun(x)


Hope this helps,

Rui Barradas

Em 09-07-2012 17:42, Nico902 escreveu:
> 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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