[BioC] Beginner with Affimetrix Data

Naomi Altman naomi at stat.psu.edu
Sat Jul 9 05:17:19 CEST 2005

If you have a .xls file, it is probably the MAS5 normalized data.  You 
should open the file under Excel before importing into Bioconductor, and 
make sure you understand what you have.  Much of what you will read about 
normalization assumes that you are starting with unnormalized probe-level data.


At 11:24 AM 6/27/2005, Cecilia Fernandez wrote:
>I have Affimetrix data, but I don't have .CEL files, only a .xls.
>How can I open this file with Bioconductor?
>Thank you.
>Bioconductor mailing list
>Bioconductor at stat.math.ethz.ch

Naomi S. Altman                                814-865-3791 (voice)
Associate Professor
Bioinformatics Consulting Center
Dept. of Statistics                              814-863-7114 (fax)
Penn State University                         814-865-1348 (Statistics)
University Park, PA 16802-2111

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