Clearly something has gone terribly wrong. Everyone is saying use S3. This is an online discussion... So someone needs to support S4.
Which frighteningly seems to be me! I'd caution you now... I first used an S4 object about two weeks ago and still have no real idea if they do what I think they do! My understanding is S4 objects can hold the source data and the commands to make the result data. Which means in terms of reproduction of results this may be better... ...I'm not at all sure I know what you want to do with your data. But assuming you started with a time series of daily maximum temperature, I think with an S4 object the daily maximum can be saved, plus the week, month, season, year etc. If week could begin on a Monday or a Sunday, the info that is used to decide is stored for reference. S4 can enforce data types. On Mon, 7 Apr 2025, 22:40 Jeff Newmiller via R-help, <r-help@r-project.org> wrote: > My opinion is that you should use S3 unless you absolutely need some > syntactic sugar only offered by some other object system. > > Note that in a majority of cases you want to transform one standard data > structure to another... tibble to tibble is the fashion for dplyr... and > functions can often do what you want just fine except that they sometimes > end up needing a lot of arguments that you want to refer to in many places. > You can often make a class that holds those arguments so they can be > re-used and where the class has methods to do the desired transformation > (s) where the bulk data remains handled as arguments and return values > rather than as data in the object itself. > > The lm class in base R uses a "constructor computes and methods retrieve > results" approach... which isn't quite as flexible as a transformer > approach but still hides the gory details. > > My reason for giving these examples is that the functional/OO approach > expresses problems quite cleanly using S3... and you don't have to pay the > performance/hoop-jumping/extra dependencies that you need for R5 or R7. > That is, you should think carefully about whether you really need whatever > features that more advanced OO system offers... and then you will know the > answer to the question you posed for yourself. > > On April 7, 2025 10:35:44 AM PDT, Erin Hodgess <erinm.hodg...@gmail.com> > wrote: > >Hello everyone! > > > >I have an opinion question please. If I’m writing a new package, would > you > >recommend using S3 or S4 structure, please? > > > >I know I will get lots of opinions, but that’s fine. > > > >Thanks, > >Erin > > > > > >Erin Hodgess, PhD > >mailto: erinm.hodg...@gmail.com > > > > [[alternative HTML version deleted]] > > > >______________________________________________ > >R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see > >https://stat.ethz.ch/mailman/listinfo/r-help > >PLEASE do read the posting guide > https://www.R-project.org/posting-guide.html > >and provide commented, minimal, self-contained, reproducible code. > > -- > Sent from my phone. Please excuse my brevity. > > ______________________________________________ > R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide > https://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide https://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
