[BioC] CMA help
cpons at upvnet.upv.es
Fri Jun 24 12:03:28 CEST 2011
Hi to all,
I'm new using R and CMA. I want to create some classifiers/biomarker
from peach microarray data using using the different classification
methods implemented in CMA. My problem is that I don't kown how to
prepare data and introduce class labels given all examples are based in
the prepared dataset golub, but no in a raw gene expression matrix.
My goal is to create classifiers based in genotypes and the observed
phenotypes. I have a gene expression matrix with 3533 genes (rows) and
48 microarrays corresponding to 16 samples (replicates each). Out of
them 8 are from a sensitive and 8 from a tolerant cultivars. Samples
are taken at harvest and ripe and two different treatments (3 points each).
Please can somebody tell me wich commands I should type to define labels?
Thanks a lot in advance
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