An alternative that does not use the zoo package but uses the built-in constant month.abb
df1 <- data.frame(Year = c(2021, 2021, 2021), Mon = c("Mar", "Jan", "Apr")) df1$mon_year <- df1$Year*100 + sapply(df1$Mon, \(x) match(x,month.abb)) sort(df1$mon_year) On Wed, May 17, 2023 at 2:48 AM Jeff Newmiller <jdnew...@dcn.davis.ca.us> wrote: > > I don't use lubridate, but that package works with Date and POSIXt types, > which I do use. Just remember to include a day when converting (1st of month > is typical), and use an output format to hide the day when you plot. > > On May 16, 2023 1:29:27 PM PDT, Jeff Reichman <reichm...@sbcglobal.net> wrote: > >R Help > > > > > > > >I have a data.frame where I've broken out the year <dbl> and an ordered > >month <ord> values. But I need to recombine them so I can graph mon-year in > >order but when I recombine I lose the month order and the results are > >plotted alphabetical. > > > > > > > >Year month mon_year > > > ><dbl> <ord> > > > >2021 Mar Mar-2021 > > > >2021 Jan Jan-2021 > > > >2021 Apr Apr-2021 > > > > > > > >So do I need to convert the months back to an integer then recombine to > >plot. > > > > > > > >Jeff Reichman > > > > > > [[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 http://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 http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. ______________________________________________ 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 http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.