expressionByFeature {Starr} | R Documentation |
This function gets the expression of a specified feature (e.g. orf, gene) from an ExpressionSet.
expressionByFeature(eSet, fkt, method="median")
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 |
Benedikt Zacher zacher@lmb.uni-muenchen.de