"plotMvsA"(X, Alab="A", Mlab="M", Alim=c(0, 16), Mlim=c(-1, 1) * diff(Alim) * aspectRatio, aspectRatio=1, pch=".", ..., add=FALSE)matrix with two channels and N observations.Mlim and Alim.points.TRUE, data points are plotted in the current plot,
otherwise a new plot is created.