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12291
2008 Mar 18
3
Puzzled at generating combinations
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