[R] Cartesian Product Of Character Vectors

[David Winsemius]

Does this satisfy?

levels(interaction(x,y))
[1] "aaa.1" "bbb.1" "ccc.1" "aaa.2" "bbb.2" "ccc.2" "aaa.3" "bbb.3"  
"ccc.3"

-- 
David Winsemius


On Dec 5, 2008, at 8:12 AM, <Rory.WINSTON at rbs.com>  
<Rory.WINSTON at rbs.com> wrote:

> Hi all
>
> (I'm sure this question has been asked before, but I cant find it).
>
> If I have two character vectors:
>
>> x <- c("aaa","bbb","ccc")
>> y <- c("1","2","3")
>
> How can I get the cartesian product of the string values?
>
>> expand.grid(x,y)
>
> Gives me a data frame with separate columns...however, I cant seem  
> to get *apply to paste the column values together.
>
> Thanks
> Rory
>
> Rory Winston
> RBS Global Banking & Markets
> 280 Bishopsgate, London, EC2M 4RB
> Office: +44 20 7085 4476
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>
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