[BioC] PCA

aedin culhane aedin.culhane at ucd.ie
Wed Jul 13 12:25:15 CEST 2005

Dear Yanqin

For PCA of microarary data, have a look at ord funtion in the
bioconductor package made4. It simplified running PCA (and
correspondence analysis) on microarray data.  It takes input data in
many formats including AffyBatch, ExprSet, data.frame etc.   

To run a PCA

pca.res<- ord(data, "pca")


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