[R] Is there a function to test if all the elements in a vector are unique

[Remko Duursma]

any(duplicated(c(1,2,2)))


r

-------------------------------------------------
Remko Duursma
Post-Doctoral Fellow

Centre for Plants and the Environment
University of Western Sydney
Hawkesbury Campus
Richmond NSW 2753

Dept of Biological Science
Macquarie University
North Ryde NSW 2109
Australia

Mobile: +61 (0)422 096908
www.remkoduursma.com



On Tue, Dec 1, 2009 at 2:42 PM, Peng Yu <pengyu.ut at gmail.com> wrote:
> length(unique(c(1,2,2)))==length(c(1,2,2))
>
> I use the above test to test if all the elements in a vector are
> unique. But I'm wondering if there is a convenient function to do so
> in R library.
>
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