R help - Mar 2009 - pairs of numbers

Hi,

I have two lists of numbers which are both 1,2,3,4.
I would like to combine pairs so that I have:
1,2
1,3
1,4
2,3
2,4
3,4.

I know that expand.grid() can give me all combinations of pairs. 

Any suggestions would be much appreciated.

Emma
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I have solved my problem using:
> x<-1:4
> x
[1] 1 2 3 4
> combn(x,2)
     [,1] [,2] [,3] [,4] [,5] [,6]
[1,]    1    1    1    2    2    3
[2,]    2    3    4    3    4    4

Thanks Emma


emj83 wrote:
> 
> Hi,
> 
> I have two lists of numbers which are both 1,2,3,4.
> I would like to combine pairs so that I have:
> 1,2
> 1,3
> 1,4
> 2,3
> 2,4
> 3,4.
> 
> I know that expand.grid() can give me all combinations of pairs. 
> 
> Any suggestions would be much appreciated.
> 
> Emma
> 
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http://www.nabble.com/pairs-of-numbers-tp22494116p22494346.html
Sent from the R help mailing list archive at Nabble.com.