This is a convenience function that is used internally to allow the user to pass an expressionSet object from the microarray processing package 'affy'
directly to the cluscomp
function.
expSetProcess(x)
An object of class expressionSet from the Bioconductor package 'affy'.
when called directly, returns a suitably labeled data.frame() object of the expressionSet expression values.
Merged consensus clustering to assess and improve class discovery with microarray data. Simpson TI, Armstrong JD and Jarman AP. BMC Bioinformatics 2010, 11:590.