expressionByFeature {Starr}R Documentation

Getting expression value by feature from an ExpressionSet

Description

This function gets the expression of a specified feature (e.g. orf, gene) from an ExpressionSet.

Usage

expressionByFeature(eSet, fkt, method="median")

Arguments

eSet

An ExpressionSet, containing the normalized expression values

fkt

Function to convert the featureNames (e.g. affy IDs) of eSet to the required features (e.g. ORFs)

method

If one feature (e.g. ORF) has more than one feature (e.g. affy ID) on the chip, the mean/median over the intensities is taken

Author(s)

Benedikt Zacher zacher@lmb.uni-muenchen.de

See Also

mget


[Package Starr version 1.38.0 Index]