The S4 class hierarchy the graph declares, with the superclasses setClassUnion and setIs give classes it does not declare, and the S3 classes setOldClass registers, each extending the next of its vector.
setClassUnion
setIs
setOldClass
The S4 class hierarchy the graph declares, with the superclasses
setClassUnionandsetIsgive classes it does not declare, and the S3 classessetOldClassregisters, each extending the next of its vector.