Hi group,
If I want to create raw txt file of microarray data from the (affymetrix)
cell file, how do I create the expression set with raw signal intensity.I
know that only cell file with the version 3 can be opened as excel file as
it is in ascii format.
In one such cell file the intensity is indicated as:
   CellHeader=X Y MEAN STDV NPIXELS 0 0 137.3 25.1 36 1 0 10730.5 2009.9 36
2 0 136.3 21.2 36
      But I am not sure how to assign the probe numbers to the
CellHeaders and I would also like to know if the raw intensity taken is just
the mean intensity? Can this be performed in R?
Waiting for your response,
Thank you in advance,
Viritha

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