[R] generating unordered combinations

[G. Jay Kerns]

Dear Dan,

On Thu, Sep 17, 2009 at 5:31 PM, Erik Iverson <eiverson at nmdp.org> wrote:
> Dan,
>
> Still maybe a bit ugly, but no looping...
>
>> unique(as.data.frame(t(apply(expand.grid(0:2, 0:2, 0:2), 1, sort))))


The prob package provides a convenience wrapper for (essentially)
Erik's solution:

library(prob)
urnsamples(0:2, size = 3, replace = TRUE, ordered = FALSE)

Regards,
Jay



***************************************************
G. Jay Kerns, Ph.D.
Associate Professor
Department of Mathematics & Statistics
Youngstown State University
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