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2007 Jan 24
1
how to properly extend s3 data.frames with s4 classes?
...> missing package slot (.GlobalEnv) in object of class # > "WrappedDataframe" (package info added) in: initialize(value, ...) # # So, at least the data seems to be there. Let's use this one. # wdf <- new(WDF, tdf) # # === (c) "Smart" Dataframes === # SDF <- "SmartDataframe" setClass(SDF, representation(WDF, info="character")) getClass(SDF) # # > Slots: # > # > Name: info # > Class: character # > # > Extends: # > Class "WrappedDataframe", directly # > Class "data.frame", by class "WrappedDataframe&...