Hi,

I'm creating my limma design matrices by hand and am just wondering whether the sample names in the matrix actually matter or whether they may be arbitrary as long as they reflect the ascending order of array columns of my expression set. E.g.: row a of the design matrix would correspond to array#1, row b to array#2 and so forth. Is it okay to do it this way or is it absolutely necessary to write the complete array/sample name?

Thanks a lot for any advice!

Cheers

Karl 
__________________________________________
Max-Delbrück-Centre for Molecular Medicine
FG Dörken
Haematology, Oncology and Tumorimmunology
Robert-Rössle-Str. 10

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