[R] Help With Permutations

From: Mulazzani Fabio (Student Com06) <Fabio.Mulazzani_at_stud-inf.unibz.it>
Date: Mon, 24 Nov 2008 14:36:31 +0100


I have a problem with permutations functions in R

I just started using R so maybe it is an easy question

I need to obtain all the 9.somthingExp 157 permutations that can be given from the number from 1 to 100

I wrote the following commands:  

> library(gregmisc)

>options(expressions=1e5)

     cmat <- combinations(300,2)

     dim(cmat) # 44850 by 2

>permutations(n=100, r=100)
 

Unfortunately at a certain point (after few minutes) I get the following Error:

Error: cannot allocate vector of size 609.1 Mb  

What can I do?

Thanks

Fabio

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