[R] Combination

[Dimitris Rizopoulos]

Eik Vettorazzi wrote:
> Hi Dani,
> see ?combn .
> 
> combn(1:50,2)
> gives you all combinations as matrix.
> you can do sth like
> 
> apply(combn(1:50,2),2, paste, sep="", collapse="")

note that you could simplify the above by

combn(50, 2, paste, collapse = "")


Best,
Dimitris


> to get concatenated results.
> 
> hth.
> 
> Dani Valverde schrieb:
>> Hello,
>> I have a sequence of numbers:
>> seq(1:50)
>> and I would like to have all the possible combinations with this 
>> numbers without repeating any combination:
>> 11, 12, 13, ... ,22,23,24,...
>> How can I do it?
>> Best,
>>
>> Dani
>>
> 

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

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