Tim Bergsma
2013-Feb-02 22:34 UTC
[Rd] setGeneric() gives "must supply skeleton" when checking package
r-devel, In a development version of the CRAN package metrumrg, I write ... require(reshape) setGeneric('cast') setOldClass(c('keyed','data.frame')) setMethod('cast','keyed', function ...) The result is satisfactory when sourcing the code directly, but when checking the package (which has 'reshape' as a dependency in the DESCRIPTION file) I get the following: "Error in setGeneric("cast") : must supply a function skeleton for ???cast???, explicitly or via an existing function." The help for setGeneric() seems to suggest that no function skeleton is needed when creating a generic for a function defined in some other package. I found one or two previous related posts, but no obvious resolution. Comments appreciated, Tim Bergsma, PhD [[alternative HTML version deleted]]
Martin Morgan
2013-Feb-03 17:36 UTC
[Rd] setGeneric() gives "must supply skeleton" when checking package
On 02/02/2013 02:34 PM, Tim Bergsma wrote:> r-devel, > > In a development version of the CRAN package metrumrg, I write ... > > require(reshape) > setGeneric('cast') > setOldClass(c('keyed','data.frame')) > setMethod('cast','keyed', function ...) > > The result is satisfactory when sourcing the code directly, but when > checking the package (which has 'reshape' as a dependency in the > DESCRIPTION file) I get the following: > > "Error in setGeneric("cast") : must supply a function skeleton for > ???cast???, explicitly or via an existing function."You haven't mentioned your DESCRIPTION or NAMEPSACE file, but the right thing to do is DESCRIPTION: Depends: reshape NAMESPACE: importFrom(reshape, cast) R/somefile.R: setGeneric("cast") Perhaps your current setGeneric is being performed inside the namespace when cast is not yet available (e.g., because it has not been imported)? Martin Morgan> > The help for setGeneric() seems to suggest that no function skeleton is > needed when creating a generic for a function defined in some other > package. I found one or two previous related posts, but no obvious > resolution. > > Comments appreciated, > > Tim Bergsma, PhD > > [[alternative HTML version deleted]] > > ______________________________________________ > R-devel at r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-devel >-- Computational Biology / Fred Hutchinson Cancer Research Center 1100 Fairview Ave. N. PO Box 19024 Seattle, WA 98109 Location: Arnold Building M1 B861 Phone: (206) 667-2793