[R] Puzzled at generating combinations

[John Kane]

Will something like this work?
x <- data.frame(xx=c("r1", "r2", "r3"), yy=c(1,2,3))
y <- data.frame(aa=c("R1", "R2", "R3"), bb=c(10,12,
14))

merge(x,y)


--- Ajay Shah <ajayshah at mayin.org> wrote:

> I have two data frames. Suppose the first has rows
> 
> r1
> r2
> r3
> 
> and the second has rows
> 
> R1
> R2
> R3
> 
> I'd like to generate the data frame:
> 
>     r1   R1
>     r1   R2
>     r1   R3
>     r2   R1
>     r2   R2
>     r2   R3
>     r3   R1
>     r3   R2
>     r3   R3
> 
> How would I go about doing this? I'm sure there's a
> clean way to do it
> but I find myself thinking in loops.
> 
> -- 
> 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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> and provide commented, minimal, self-contained,
> reproducible code.
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