Hi,

mas5calls.AffyBatch is supposed to calulate prence p-vales:
"The 'mas5calls' method for 'AffyBatch' returns an 'exprSet' with
     calls in the 'exprs' slot and p-values in the 'se.exprs'. The
     code{mas5calls} for 'ProbeSet' returns a list with vectors of
     calls and pvalues."

Here is what I get from mas5call
> dim(exprs(ab.mas5calls))
[1] 45101   157
> exprs(ab.mas5calls)[1:2,1:3]
           139102 139103 139104
1415670_at "P"    "P"    "P"
1415671_at "P"    "P"    "P"

it is Ok

> dim(se.exprs(ab.mas5calls))
Error in function (classes, fdef, mtable)  :
    unable to find an inherited method for function "se.exprs", for
signature "ExpressionSet"
>

Any suggestions how presence p-values can be accessed

Thnaks
Vladimir

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