\Header{assessSD}{SD Assessment functions}
\keyword{manip}{assessSD}
\begin{Description}\relax
Assessment function for standard deviation estimates.
Takes a dilution data
\code{\Link{exprSet-class}} and returns a list with necessary
information to create assessment plot.
\end{Description}
\begin{Usage}
\begin{verbatim}
assessSD(exprset,method.name=NULL,logx=FALSE)
\end{verbatim}
\end{Usage}
\begin{Arguments}
\begin{ldescription}
\item[\code{exprset}] An \code{\Link{exprSet-class}} containing
exrpession measures for 
Affymetrix's spike-in experiment.
\item[\code{method.name}] Name of expression measure being assessed.
\item[\code{logx}] Logical. If \code{TRUE} expression is logged for plot. See details.
\end{ldescription}
\end{Arguments}
\begin{Details}\relax
\code{assessSD} does the assessment for Figure 7. This requires the
\code{exprSet} to have standard error estaimtes for the expression
measure. Some expression (such as dChip) will have SEs for the
original scale. Others, like RMA will have them for the log scale. For
orignal scales, making \code{logx=TRUE} is recommended.
\end{Details}
\begin{Value}
Lists with the necessary information to make the Figures.\end{Value}
\begin{Author}\relax
Rafael A. Irizarry
\end{Author}

