\name{boxplotNegCtrl}
\alias{boxplotNegCtrl}
\title{ Boxplot of Signals and Negative Controls }
\description{
	For each array, it shows the boxplot for the
	genes (red) and negative controls (green)
}
\usage{
boxplotNegCtrl(RGlist, Log2, channel)
}
\arguments{
  \item{RGlist}{An RGlist object }
  \item{Log2}{logical, if \code{TRUE} it assumes that the data are in log2 scale}
  \item{channel}{if 'channel=R', then uses the data stored in dd$R, if channel  
		is missing or 'channel =G' then the data stored in dd$G is used}
}
\details{
	It allows the comparison of the gene signals with the signals
	of the negative controls. 
}
\author{Pedro Lopez-Romero }
\examples{
\dontrun{
	data(dd)
	boxplotNegCtrl(dd,Log2=FALSE,channel="G")
}
}
\keyword{documentation}
\keyword{utilities}