as.matrix {limma} | R Documentation |
Turn a microarray data object into a numeric matrix by extracting the expression values.
## S3 method for class 'MAList': as.matrix(x)
x |
an object of class RGList , MAList , MArrayLM , marrayNorm or exprSet |
These methods extract the matrix of log-ratios, for MAList
or marrayNorm
objects, or the matrix of expression values for exprSet
objects.
For MArrayLM
objects, the matrix of fitted coefficients is extracted.
These methods involve loss of information, so the original data object is not recoverable.
A numeric matrix.
Gordon Smyth
as.matrix
in the base package.
02.Classes gives an overview of data classes used in LIMMA.