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% $Id: reshape.Rd 25 2022-05-30 18:46:01Z proebuck $
\name{reshape}
\alias{reshape}
\title{MATLAB reshape function}
\description{
Reshape matrix or array.
}
\usage{
reshape(A, \dots)
}
\arguments{
\item{A}{matrix or array containing the original data}
\item{\dots}{numeric dimensions for the result}
}
\details{
In the first example below, an \code{m}-by-\code{n} matrix is created whose
elements are taken column-wise from \code{A}. An error occurs if \code{A}
does not have \eqn{m*n} elements.\cr
In the second example below, an \code{n}-dimensional array with the same
elements as \code{A} but reshaped to have the size
\code{m}-by-\code{n}-by-\code{p}. The product of the specified dimensions
must be the same as \code{prod(size(A))}.\cr
In the third example below, an \code{n}-dimensional array with the same
elements as \code{A} but reshaped to \code{siz}, a vector representing the
dimensions of the reshaped array. The quantity \code{prod(siz)} must be
the same as \code{prod(size(A))}.
}
\value{
Returns matrix (or array) of requested dimensions containing the elements
of \code{A}.
}
\author{
P. Roebuck \email{proebuck1701@gmail.com}
}
\examples{
Xmat.2d <- matrix(1:12, nrow=4, ncol=3)
reshape(Xmat.2d, 6, 2) # example 1
reshape(Xmat.2d, c(6, 2)) # same thing
Xarr.3d <- reshape(Xmat.2d, c(6, 2, 1)) # example 2
reshape(Xmat.2d, size(Xarr.3d)) # example 3
}
\keyword{array}
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