"plotMvsX"(this, reference, x, indices=NULL, pch=176, ylim=c(-1, 1) * 2, ylab=NULL, ..., what=c("M", "A"), add=FALSE, annotate=!add)plot.TRUE, the plot is annotated with information about
the data plotted, otherwise not.data.frame with the plotted data in the
first two columns, and remaining data in the following columns.
*plotMvsA().
*smoothScatterMvsA().
For more information see AffymetrixCelFile.