[R] Creating a Matrix from a vector with some conditions

[David Winsemius]

On Jan 6, 2011, at 4:34 PM, ADias wrote:

>
> Hi
>
> Suppose we have an object with strings:
>
> A<-c("a","b","c","d")
>
> Now I do:
>
> B<-matrix(A,4,4, byrow=F)
>
> and I get
>
> a a a a
> b b b b
> c c c c
> d d d d
>
> But what I really want is:
>
> a b c d
> b c d a
> c d a b
> d a b c
>
> How can I do this?

How else?
B<-matrix(A,4,4, byrow=TRUE)

>
> thank you
>
> A. Dias
> -- 
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>
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David Winsemius, MD
West Hartford, CT