I have developed a package, bayesm, which uses existing classes of objects. I would like to add a new class corresponding to objects from this package.
I have been reading about classes and all sources tell me that I should use so-called "new" or S4 classes. However, a major purpose of defining a class for my package would be to add methods to the existing generic functions: print, plot, and summary. My understanding is that these functions work with the "old" or S3 classes. If I want to use S4 classes, do I need to write new generic functions or is there as way to "extend" the existing generics to work with S4 classes and objects. I may be using the wrong word here "extend" but I hope that everyone understands the point. If I have to write new generic functions, it is a simply matter of registering the pre-existing methods based on S3 objects? Or do you basicaly have to start from scratch -- i.e. the two types of classes, methods and generic functions are distinct? thanks peter r ................................ Peter E. Rossi Joseph T. and Bernice S. Lewis Professor of Marketing and Statistics Editor, Quantitative Marketing and Economics Rm 353, Graduate School of Business, U of Chicago 5807 S. Woodlawn Ave, Chicago IL 60637 Tel: (773) 702-7513 | Fax: (773) 834-2081 ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
