MatNormalization {aroma.affymetrix}R Documentation

The MatNormalization class


Package: aroma.affymetrix
Class MatNormalization


Directly known subclasses:

public static class MatNormalization
extends AbstractProbeSequenceNormalization

This class represents a normalization method that corrects for systematic effects in the probe intensities due to differences in the number of A, C, G, and T:s and the match scores according to MAT [1].


MatNormalization(..., unitsToFit=NULL, model=c("lm"), nbrOfBins=200)



Arguments passed to the constructor of AbstractProbeSequenceNormalization.


The units from which the normalization curve should be estimated. If NULL, all are considered.


A character string specifying the model used to fit the base-count effects.


The number of bins to use for the variance smoothing step.

Fields and Methods


process -

Methods inherited from AbstractProbeSequenceNormalization:
fitOne, getAromaCellSequenceFile, getParameters, getTargetFile, indexOfMissingSequences, predictOne, process

Methods inherited from ProbeLevelTransform3:
getAsteriskTags, getCellsTo, getCellsToFit, getCellsToUpdate, getParameters, getUnitsTo, getUnitsToFit, getUnitsToUpdate, writeSignals

Methods inherited from ProbeLevelTransform:

Methods inherited from Transform:
getOutputDataSet, getOutputFiles

Methods inherited from AromaTransform:
as.character, findFilesTodo, getAsteriskTags, getExpectedOutputFiles, getExpectedOutputFullnames, getFullName, getInputDataSet, getName, getOutputDataSet, getOutputDataSet0, getOutputFiles, getPath, getRootPath, getTags, isDone, process, setTags

Methods inherited from ParametersInterface:
getParameterSets, getParameters, getParametersAsString

Methods inherited from Object:
$, $<-, [[, [[<-, as.character, attach, attachLocally, clearCache, clearLookupCache, clone, detach, equals, extend, finalize, getEnvironment, getFieldModifier, getFieldModifiers, getFields, getInstantiationTime, getStaticInstance, hasField, hashCode, ll, load, names, objectSize, print, save, asThis


This class requires that an aroma probe sequence file and aroma match scores file is available for the chip type.


Mark Robinson


[1] Johnson WE, Li W, Meyer CA, Gottardo R, Carroll JS, Brown M, Liu XS. Model-based analysis of tiling-arrays for ChIP-chip, PNAS, 2006.

[Package aroma.affymetrix version 3.2.0 Index]