[Bioc-devel] S4 Method of ExpressionSet Signature Not Found

[Dario Strbenac]

Hello,

How is it possible to have the method implemented for a particular signature, but not found ? The problem I am having is :

Browse[2]> showMethods("DMDselection")
Function: DMDselection (package ClassifyR)
expression="ExpressionSet"
expression="matrix"
Browse[2]> selectParams at featureSelection
nonstandardGenericFunction for "DMDselection" defined from package "ClassifyR"

function (expression, ...) 
{
    standardGeneric("DMDselection")
}
<environment: 0x4ed8ca8>
Methods may be defined for arguments: expression
Use  showMethods("DMDselection")  for currently available ones.
Browse[2]> do.call(selectParams at featureSelection, paramList)
Error in (function (classes, fdef, mtable)  : 
  unable to find an inherited method for function 'DMDselection' for signature '"ExpressionSet"'

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Dario Strbenac
PhD Student
University of Sydney
Camperdown NSW 2050
Australia