[R] (no subject)

Dimitris Rizopoulos d.rizopoulos at erasmusmc.nl
Fri Feb 13 14:20:55 CET 2009


do you mean:

combn(12, 4)


Best,
Dimitris


glenn wrote:
> Very quick one please team;
> 
>  
> 
> How do I return the number of possible unique subsets in a data set (not
> combinations i.e. not (1,2,3,4) and (4,3,2,1)) please ?
> 
>  
> 
> e.g. In a list of integers 1 to 12, there is 495 sets with 4 elements in
> 
>  
> 
> regards
> 
>  
> 
> glenn
> 
> 
> 	[[alternative HTML version deleted]]
> 
> ______________________________________________
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> 

-- 
Dimitris Rizopoulos
Assistant Professor
Department of Biostatistics
Erasmus Medical Center

Address: PO Box 2040, 3000 CA Rotterdam, the Netherlands
Tel: +31/(0)10/7043478
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