\name{mae.readVSfile}
\alias{mae.readVSfile}
\title{ A function read vertically stacked MAExplorer array expression data}

\description{
A function that read vertically stacked MAExplorer array expression 
data using a two line header.
}

\usage{
readVSfile(data)
}

\arguments{
  \item{file}{
   The name of the data file containing expression data
   exported from MAExplorer}
}

\details{
    \code{mae.readVSfile} 
     Read vertically stacked file of table data exported
     from MAExplorer. The column names are ("mid", "data", sampleName", 
     "condName") where mid is the row name.
}

\value{
A list with components
  \item{vData}{vertically stacked data frame of rows of genes with columns 
               of samples.} 
  \item{sampleNames}{Microarray sample names}
  \item{condNames}{unique condition names}
  \item{allCondNames}{condition names corresponding to samples}
  \item{nSamples}{number of samples}
  \item{nConds}{number of unique conditions}
  \item{nGenes}{number of rows of genes}
  \item{isVertStacked}{flag indicating the data frame is vertically stacked}
       }

\references{ }
 

\author{ Peter Lemkin, Greg Thornwal}

\date{ 06/12/2003}

\examples{
# Read the vertically stacked XY sets data file exported from MAExplorer
xySetTbl <- mae.readVSfile("R-inputHP-XYsets.txt")

}
\keyword{ }