[R] function for grouping

David Winsemius dwinsemius at comcast.net
Wed Jan 25 18:22:49 CET 2012


On Jan 25, 2012, at 12:10 PM, yan wrote:

> thanks petr,
> what if I got 200 elements, so I have to write expand.grid(x1=1,  
> x2=1:2,
> x3=1:3, x4=1:3, x5=1:3....x200=1:3))?

Perhaps same thing that will happen when those monks finish the Towers  
of Hanoi?

2*3^198
[1] 5.902533e+94

-- 

David Winsemius, MD
West Hartford, CT



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