[R] Combining characters

[Joshua Wiley]

Try expand.grid() to create all the combinations.  Then just collapse
them with paste():

apply(expand.grid(x, y, z), 1, paste, collapse = " ")

Cheers,

Josh

On Wed, Jan 4, 2012 at 8:32 AM, jeremy <jeremynamerica at gmail.com> wrote:
> Hi all,
>
> I'm trying to combine exhaustively several character arrays in R like:
> x=c("one","two","three")
> y=c("yellow","blue","green")
> z=c("apple","cheese")
>
> in order to get concatenation of
>
> x[1] y[1] z[1]  ("one yellow apple")
> x[1] y[1] z[2] ("one yellow cheese")
> x[1] y[2] z[1]("one blue apple")
> ...
> x[length(x)] y[length(y)] z[length(z)]  ("three green cheese")
>
> Anyone has a solution ?
> Thank in advance
>
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-- 
Joshua Wiley
Ph.D. Student, Health Psychology
Programmer Analyst II, Statistical Consulting Group
University of California, Los Angeles
https://joshuawiley.com/