On Thu, 2003-10-02 at 13:40, Paul Green wrote:
> Is there a function in R that will give all
> combination levels. For example, I see
> there is a "choose" function that gives
>
> >choose(5,2)
> 10
>
> but I want
>
> 1 2
> 1 3
> 1 4
> 1 5
> 2 3
> 2 4
> 2 5
> 3 4
> 3 5
> 4 5
>
> This is a simple example. Actually I would like
> to do something like 10 choose 4.
>
> Paul
See the combinations() function in the 'gregmisc' package on CRAN:
> combinations(5, 2)
[,1] [,2]
[1,] 1 2
[2,] 1 3
[3,] 1 4
[4,] 1 5
[5,] 2 3
[6,] 2 4
[7,] 2 5
[8,] 3 4
[9,] 3 5
[10,] 4 5
HTH,
Marc Schwartz
______________________________________________
[EMAIL PROTECTED] mailing list
https://www.stat.math.ethz.ch/mailman/listinfo/r-help
