Dear BioC-Devel mailing list,
my package makes use of the "recast" function from the "reshape" R-package.
I have imported the function in the NAMESPACE with "importFrom("reshape",
recast, melt, cast, sort_df)". So this worked out quite well.
But this function relies on the "is.formula" function from the "plyr"
R-package. So I tried to import this function along whith its dependancies
in the NAMESPACE.
Now this did not work for me. I have tried "import(plyr)",
"importFrom("plyr", is.formula, rbind.fill)" in the NAMESPACE and "Depends:
plyr" in the DESCRIPTION.
At the moment of writing only "Depends: plyr" works for me.
Any attempt of importing the function results in the following error when
checking the package:

Error in recast(data = exprs_z, formula = identifier ~ variable,
collapse_fun) :
  could not find function "is.formula"
Calls: virtualArray.build_fData -> recast

Maybe someone has encountered similar problems and can help me out of this.

Thanks in advance,
Andreas Heider

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