To expand on this for people submerged in tidyverse, merge is the base R swiss army knife that performs the in-memory functions of
dplyr::inner_join dplyr::left_join dplyr::right_join dplyr::full_join but it does not support databases and the like. On June 29, 2021 5:07:46 PM PDT, Duncan Murdoch <murdoch.dun...@gmail.com> wrote: >On 29/06/2021 8:03 p.m., Matthew McCormack wrote: >> I think, but I'm not sure, that when you use merge it basically >> attaches one data frame to the other. I do not think it matches up >> entries from a particular column in each data frame (and I know >> biologists frequently want to match entries from a particular column >in >> each data frame). For that, I think you need a join from the dplyr >package. > >You think wrong. The Description in the help page is short and clear: > >"Merge two data frames by common columns or row names, or do other >versions of database join operations." > >Duncan Murdoch > >______________________________________________ >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.
