[R] Merge two vectors into one.

[Gábor Csárdi]

Is position important? The vectors always have the same length? They
always have the same entry if both are not NA?

If yes, yes and yes, then

res <- ifelse( is.na(x), y, x)

does what you want. Otherwise please explain better what you want.

Gabor

On Wed, Jan 28, 2009 at 3:54 PM, patricia garcía gonzález
<kurtney_84 at hotmail.com> wrote:
>
> Hi all,
>
> I have two vectors like this:
>
>
>      x <- c( "Y", "H", NA,  NA )
>
>    y <- c( NA,  "H", NA,  "B" )
>
> And would like to make one vector with the common elements, and the element available only in one of the vectors.
>
>
>      res <- c( "Y",  "H", NA,  "B" )
>
>
> Thanks,
>
> Patricia
>

-- 
Gabor Csardi <Gabor.Csardi at unil.ch>     UNIL DGM