[BioC] DEGraph demo exprData question

[Dick Beyer]

Hi,

Does anyone know how the values in the DEGraph demo exprData matrix were calculated?  I have read the DEGraph documentation, as well as the source documents for the data (GSE6532), and I can't figure out how to go from the RMA values (range 0-16) to the values in the exprData matrix (-5 to 7.5 about).  It doesn't seem to be z-scores.

If anyone can help, I'd love to hear.  Just trying to understand the details of DEGraph

Thanks very much,
Dick 
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Richard P. Beyer, Ph.D.	University of Washington
Tel.:(206) 616 7378	Env. & Occ. Health Sci. , Box 354695
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