\author{Hao Wu}

\name{subset.madata}
\alias{subset.madata}

\title{Subsetting Microarray data objects}

\usage{
\method{subset}{madata}(x, arrays, genes, \dots)
}

\description{
  Return subsets of an an object of class \code{madata} meeting given
  conditions.
}

\arguments{
  \item{x}{An object of class \code{madata}.}
    %Read \code{\link[maanova]{createData}} for details.}
  \item{arrays}{A vector specifying which arrays to keep or discard.}
  \item{genes}{A vector specifying which genes to keep or discard.}
  \item{\dots}{Ignored at this point.}
}

\value{
  An object of class \code{madata} with specified arrays and genes.
}

\examples{
data(kidney)
\dontrun{
smalldata <- subset(kidney.raw, arrays=c(1,2))
# take out the all arrays except array 1
idx.array <- 1:kidney.raw$n.array
smalldata <- subset(kidney.raw,arrays=(idx.array[-1]))
# take out gene number 1 to 20
smalldata <- subset(kidney.raw,genes=1:20)
}}

\keyword{utilities}