[BioC] From eSet to AffyBatch Object

Boris Umylny umylny at apbri.org
Tue Mar 3 05:50:20 CET 2009


I am working with affy library from Bioconductor 2.3.

The library contains functions (hist, image and boxplot) that work directly on 
AffyBatch object, but apparently not on ExpressionSet/eSet object.  After I 
use rma, expresso or mas5 to do background correction and normalization I get 
an eSet object, which appears to be incompatible with these functions.  If I 
call hist(exprs(e)), where e is an ExpressionSet object, I get a plot of the 
first array only. 

Is there a Bioconductor library (other than geneplotter which apparently does 
not) that provides these functions on eSet/ExpressionSet object?

Is there a way to get an AffyBatch object from eSet object to make use of 
these functions?

Thank you in advance for your help.


Boris Umylny

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