Description Usage Arguments Details Value Author(s) See Also

Turn a microarray data object into a numeric matrix by extracting the expression values.

1 2 |

`x` |
an object of class |

`...` |
additional arguments, not used for these methods. |

These methods extract the matrix of log-ratios, for `MAList`

or `marrayNorm`

objects, or the matrix of expression values for other expression objects such as `EList`

or `ExressionSet`

.
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 or `exprs`

in the Biobase package.

02.Classes gives an overview of data classes used in LIMMA.

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