I am a new user of the Bioconductor suite and have a question for the list. When performing an analysis, since I have duplicate arrays, I am merging my duplicate arrays before normalizing my data. I have an option to use the mean or median values and also to log2 transform my data before averaging. Would anybody with experience care to comment about the advantages or disadvantges regarding merging, averaging and log transforming your data during the analysis.

Best regards,

Marcos Pinho
Instituto Nacional de Cāncer
Rio de Janeiro - Brasil
Tel: 55-21-3233-1426
email: mbpinho@inca.gov.br
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