Re: [R] generating a sequence

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Prof Brian Ripley (ripley@stats.ox.ac.uk)
Tue, 21 Dec 1999 12:59:31 +0000 (GMT) 




> From: "KAREN KOTSCHY" <karen@gecko.biol.wits.ac.za>


> To: r-help@stat.math.ethz.ch


> Date: Tue, 21 Dec 1999 14:20:55 GMT+2


> Subject: [R] generating a sequence


> 


> Hi everyone


> 


> I'm trying to generate a vector of the form


> a <- c(1,2,3,4,1,2,3,1,2,1) where n = 5


> in a general way, where n can be any positive integer.


> 


> I've run out of ideas. Does anyone have any suggestions?



I am a bit puzzled here. Why is that n=5 not n=4? Anyway, try



A <- matrix(1, n-1, n-1)


rA <- row(A)


rA[rA + col(A) <= n]



-- 
Brian D. Ripley,                  ripley@stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272860 (secr)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

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