Dredge data in r9/21/2023 ![]() ![]() The method to see defined S4 methods is offered helpfully: > showMethods(chol2inv) standardGeneric is an indicator of an S4 function. ![]() The output already offers a lot of information. ![]() Use showMethods("chol2inv") for currently available ones. StandardGeneric for "chol2inv" defined from package "base" Here is an example of an S4 function: > library(Matrix) The S4 system is a newer method dispatch system and is an alternative to the S3 system. Registered S3 method for t from namespace stats print.ts time.ts* [ getAnywhere(t.ts)Ī single object matching ‘t.ts’ was found monthplot.ts* na.omit.ts* Ops.ts* plot.ts diffinv.ts* diff.ts kernapply.ts* lines.ts The S3 method dispatch systemįor S3 classes, you can use the methods function to list the methods for a particular generic function or class. UseMethod("t") is telling you that t() is a ( S3) generic function that has methods for different object classes. ![]()
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