Condense a microarray data object so that values for within-array replicate probes are replaced with their average.
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a matrix-like object, usually a matrix,
other arguments are not currently used.
A new data object is computed in which each probe ID is represented by the average of its replicate spots or features.
MAList object, the components
A are both averaged in this way, as are
weights and any matrices found in
ID defaults to
MA$genes$ID is that exists, otherwise to
EList objects are similar, except that the
E component is averaged instead of
x is of mode
"character", then the replicate values are assumed to be equal and the first is taken as the average.
A data object of the same class as
x with a row for each unique value of
This function should only be applied to normalized log-expression values, and not to raw unlogged expression values.
It will generate an error message if applied to
02.Classes gives an overview of data classes used in LIMMA.
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