[R] Alternating numbers in rep()

[Charles C. Berry]

This ??

   as.vector( outer(0:1, rep(seq(1,37,by=2), each=6), "+" ) )



On Thu, 24 Jan 2008, David Afshartous wrote:

>
> All,
>
> I'm trying to obtain a one-liner to generate a certain sequence of
> alternatign numbers.
>
> Consider:
>> unlist(rep(list(c(1,2), c(3,4)), each = 6))
> [1] 1 2 1 2 1 2 1 2 1 2 1 2 3 4 3 4 3 4 3 4 3 4 3 4
>
> I'd like the result to be as above but continue until 38.  Of course, I
> could hardcode this going up to c(37,38), but is there a more elegant way?
>
>
> Thanks!
> David
>
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Charles C. Berry                            (858) 534-2098
                                             Dept of Family/Preventive Medicine
E mailto:cberry at tajo.ucsd.edu	            UC San Diego
http://famprevmed.ucsd.edu/faculty/cberry/  La Jolla, San Diego 92093-0901