R help - Nov 2003 - randomly permuting rows or col's of a matrix

Is there an shortcut (compared to "manually" swap row vectors) for the
random permutation of rows of a matrix?

"sample" does not act on the element row vectors as a whole.

Thanks

Pascal

Pascal A. Niklaus wrote:
> Is there an shortcut (compared to "manually" swap row vectors)
for the
> random permutation of rows of a matrix?
> 
> "sample" does not act on the element row vectors as a whole.
> 
  True, but sample(nrow(foo)) gives you a permutation of 1:nrow(foo) 
that you can subscript with:

  foo[sample(nrow(foo)),]

or

  foo[,sample(ncol(foo))]


Baz