[BioC] indexing geneNames in exprs

Lana Schaffer schaffer at scripps.edu
Wed Jan 26 00:37:14 CET 2005


Hi,
I am trying to index into the expression array using a geneName.
gcrma_exp <- gcrma(affybatch)
E <- exprs(gcrma_exp)

E is a matrix with the names of rows as geneNames  (ie. 203508_at" ).
I would like to get an index of E using a specific name such as 203508_at.
Would someone be able to show how to do this?
Thanks,
Lana
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