 Hi All,
  I am having a problem while running getVarianceStabilizedData in DDSeq2
package.

data.vsd<-getVarianceStabilizedData(data)
Error in (function (classes, fdef, mtable)  :
  unable to find an inherited method for function ‘dispersionFunction’ for
signature ‘"CountDataSet"’

Though the function looks okay
> dispersionFunction
standardGeneric for "dispersionFunction" defined from package "DESeq2"

function (object)
standardGeneric("dispersionFunction")
<environment: 0x7fe7a9c5d140>
Methods may be defined for arguments: object
Use  showMethods("dispersionFunction")  for currently available ones.

Can anybody please help?
Thanks,
Mitra.

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