[R] Puzzled at generating combinations

From: Ajay Shah <ajayshah_at_mayin.org>
Date: Tue, 18 Mar 2008 20:35:05 +0530

I have two data frames. Suppose the first has rows


and the second has rows


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@mayin.org                             http://ajayshahblog.blogspot.com
<*(:-? - wizard who doesn't know the answer.

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Received on Tue 18 Mar 2008 - 15:09:00 GMT

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