Re: [R] Puzzled at generating combinations

From: John Kane <jrkrideau_at_yahoo.ca>
Date: Tue, 18 Mar 2008 12:50:26 -0400 (EDT)

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)

> 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.
>
> ______________________________________________
> R-help_at_r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained,
> reproducible code.
>

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https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. Received on Tue 18 Mar 2008 - 16:55:09 GMT

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