\name{MVAplotMED}
\alias{MVAplotMED}
\title{ MVA plot }
\description{
	For each array, the M value is computed for every spot as the difference
	between the spot intensity in the array and the averaged intensity for that feature over the whole
	set of arrays  
}
\usage{
MVAplotMED(object, colorfill, maintitle)
}
\arguments{
  \item{object}{ An expression matrix transformed to log2 scale }
  \item{colorfill}{ color of the plot }
  \item{maintitle}{ title of the plot }
}
\author{ Pedro Lopez-Romero }
\examples{
\dontrun{
	data(dd)
        maintitle="MVA example"
	par(mfrow=c(1,1),ask=TRUE)
	MVAplotMED(log2(dd$G),colorfill="red",maintitle)
}
}
\keyword{documentation}
\keyword{utilities}