[BioC] Setting exprSet values

[Daniel Pick]

Hello,
    I have printed out the values of myexprSet using exprs(myexprSet).  If
I wish to replace these values by the same values in sorted order, for
example, how do I do so?  exprs(myexprSet) <-  will not take a data frame,
and there doesn't seem to be any documentation on how to create an
exprMatrix.

Dan