The R Project SVN R

\name{aperm}
\alias{aperm}
\title{Array Transposition}
\description{
  Transpose an array by permuting its dimensions and optionally resizing
  it.
}
\usage{
aperm(a, perm, resize = TRUE)
}
\arguments{
  \item{a}{the array to be transposed.}
  \item{perm}{the subscript permutation vector.}
  \item{resize}{a flag indicating whether the vector should be resized
    as well as having its elements reordered (default \code{TRUE}.)}}
\value{
  A transposed version of array \code{a}, with subscripts permuted as
  indicated by the array \code{perm}.  If \code{resize} is \code{TRUE},
  the array is reshaped as well as having its elements permuted.

  The function \code{t} provides a faster and more convenient way of
  transposing matrices.
}
\seealso{
  \code{\link{t}}.
}
\examples{
# interchange the first two subscripts on a 3-way array x
x  <- array(1:24, 2:4)
xt <- aperm(x, c(2,1,3))
stopifnot( t(xt[,,2]) == x[,,2] )
}
\keyword{array}