Re: [R] generating a sequence

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Jonathan Rougier (J.C.Rougier@durham.ac.uk)
Tue, 21 Dec 1999 14:54:07 +0000 (GMT) 




On Tue, 21 Dec 1999, Prof Brian Ripley wrote:



> 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]



Or, in the festive spirit,



n <- 5


rA <- outer(1:n, 1:n, "-")


rA[rA>=1]



Cheers, Jonathan.



Jonathan Rougier                       Science Laboratories


Department of Mathematical Sciences    South Road


University of Durham                   Durham DH1 3LE



"[B]egin upon the precept ... that the things we see are to be 


 weighed in the scale with what we know"  (Meredith, 1879, The Egoist)



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