Creating a Matrix from a vector with some conditions

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?

Try the following

  A <- c("a","b","c","d")
  B <- matrix(A, 5, 4)[1:4, ]

  #     [,1] [,2] [,3] [,4]
  #[1,] "a"  "b"  "c"  "d" 
  #[2,] "b"  "c"  "d"  "a" 
  #[3,] "c"  "d"  "a"  "b" 
  #[4,] "d"  "a"  "b"  "c" 

Petr Savicky.