[R] Interleaving elements of two vectors?
Gabor Grothendieck
ggrothendieck at gmail.com
Mon Mar 6 06:12:17 CET 2006
Try this (note that your x and y do not have the same length
and in this case the expression will recycle the shorter one
and give a warning):
z <- c(rbind(x, y))
On 3/5/06, Ajay Narottam Shah <ajayshah at mayin.org> wrote:
> Suppose one has
>
> x <- c(1, 2, 7, 9, 14)
> y <- c(71, 72, 77)
>
> How would one write an R function which alternates between elements of
> one vector and the next? In other words, one wants
>
> z <- c(x[1], y[1], x[2], y[2], x[3], y[3], x[4], y[4], x[5], y[5])
>
> I couldn't think of a clever and general way to write this. I am aware
> of gdata::interleave() but it deals with interleaving rows of a data
> frame, not elems of vectors.
>
> --
> Ajay Shah http://www.mayin.org/ajayshah
> ajayshah at mayin.org http://ajayshahblog.blogspot.com
> <*(:-? - wizard who doesn't know the answer.
>
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