\HeaderA{exprs.MA}{Extract Log-Expression Matrix from MAList}{exprs.MA}
\keyword{array}{exprs.MA}
\begin{Description}\relax
Extract the matrix of log-expression values from an \code{MAList} object.
\end{Description}
\begin{Usage}
\begin{verbatim}
exprs.MA(MA)
\end{verbatim}
\end{Usage}
\begin{Arguments}
\begin{ldescription}
\item[\code{MA}] an \code{MAList} object.
\end{ldescription}
\end{Arguments}
\begin{Details}\relax
Converts M and A-values to log-expression values.
The output matrix will have two columns for each array, in the order green, red for each array.

This contrasts with \code{as.matrix.MAList} which extracts the M-values only, or \code{RG.MA} which converts to expression values in \code{RGList} form.
\end{Details}
\begin{Value}
A numeric matrix with twice the columns of the input.
\end{Value}
\begin{Author}\relax
Gordon Smyth
\end{Author}
\begin{SeeAlso}\relax
\LinkA{02.Classes}{02.Classes} gives an overview of data classes used in LIMMA.
\end{SeeAlso}