[R] vector

[Linlin Yan]

rep(A, each=2)

On Thu, Jul 30, 2009 at 12:15 AM, Inchallah
Yarab<inchallahyarab at yahoo.fr> wrote:
> Hi ,
>
> i have a vector A=(a1,a2,a3,a4) and i want to create another vector B=(a1,a1,a2,a2,a3,a3,a4,a4) !!!
> i know that it is simple but i begin with R so i nned your help!!
>
> thank you for your help !!!
>
>
>
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