Plot log-ratios vs log-intensities

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Description

Plot log-ratios vs log-intensities.

Usage

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## S3 method for class 'matrix'
plotMvsA(X, Alab="A", Mlab="M", Alim=c(0, 16), Mlim=c(-1, 1) * diff(Alim) * aspectRatio,
  aspectRatio=1, pch=".", ..., add=FALSE)

Arguments

X

Nx2 matrix with two channels and N observations.

Alab,Mlab

Labels on the x and y axes.

Alim,Mlim

Plot range on the A and M axes.

aspectRatio

Aspect ratio between Mlim and Alim.

pch

Plot symbol used.

...

Additional arguments accepted by points.

add

If TRUE, data points are plotted in the current plot, otherwise a new plot is created.

Details

Red channel is assumed to be in column one and green in column two. Log-ratio are calculated taking channel one over channel two.

Value

Returns nothing.

Author(s)

Henrik Bengtsson

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