all combinations with replacement not ordered

Is this what you want?
   f <- function (x, m)  combn(x + m - 1, m) - seq_len(m) + 1

Bill Dunlap
Spotfire, TIBCO Software
wdunlap tibco.com
-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org] On Behalf
Of Konstantin Tretiakov
Sent: Thursday, November 07, 2013 5:38 AM
To: r-help at r-project.org
Subject: [R] all combinations with replacement not ordered

Hello!

I need to obtain all possible combinations with replacement when order is
not important.
E.g. I have a population x{1,2,3}.
So I can get (choose(3+3-1,3)=) 10 combinations from this population with
'size=3'.
How can I get a list of all that combinations?

I have tried 'expand.grid()' and managed to get only samples where order is
important.
'combn()' gave me samples without replacement.

Best regards,
Konstantin Tretyakov.

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all combinations with replacement not ordered

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