partial match attr is for something like attr(data.frame(), "cla")
which will partially match to "class". On Sun, Oct 30, 2022, 12:55 Joshua Ulrich <josh.m.ulr...@gmail.com> wrote: > For what it's worth, I set these options to warn me about partial matches: > > options(warnPartialMatchArgs = TRUE, > warnPartialMatchAttr = TRUE, > warnPartialMatchDollar = TRUE) > > That warns about this particular case, as well as partial argument > name matches in function calls. I don't remember what the partial > match attr does, but past me wanted to be warned about it for some > reason. > > Best, > Josh > > On Fri, Oct 28, 2022 at 9:26 AM Bert Gunter <bgunter.4...@gmail.com> > wrote: > > > > Does this explain it: (from ?Extract) > > > > > > name > > A literal character string or a name (possibly backtick quoted). For > > extraction, this is normally (see under ‘Environments’) **partially > > matched** to the names of the object. > > > > -- Bert > > > > On Fri, Oct 28, 2022 at 6:53 AM Sergei Ko <sggp.ser...@gmail.com> wrote: > > > > > > Hi All, > > > > > > Just noticed that R returns results for non-existent name if you have > > > another variable with the same beginning when you subset with $. > > > See the code below: > > > name_0 <- "ID" > > > name_1 <- "name" > > > name_2 <- "name1" > > > > > > v0 <- 1:200 > > > v1 <- c(rep(0,100), rep(1,100)) > > > v2 <- c(rep(0,50), rep(1,150)) > > > > > > df <- as.data.frame(cbind(v0, v1, v2)) > > > colnames(df) <- c(name_0, name_1, name_2) > > > > > > df_1 <- df[, c(name_0, name_1)] > > > df_2 <- df[, c(name_0, name_2)] > > > > > > table(df$name) > > > table(df_1$name) > > > table(df_2$name) > > > colnames(df_2)[2] <- "name10" > > > table(df_2$name) > > > colnames(df_2)[2] <- "name_any" > > > table(df_2$name) > > > table(df_2[,"name"]) > > > > > > The last row produces an error as intended. > > > Any ideas? > > > > > > Win 10 > > > R version 4.2.1 (2022-06-23 ucrt) -- "Funny-Looking Kid" > > > > > > Regards, > > > Sergiy > > > > > > [[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. > > > > ______________________________________________ > > 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. > > > > -- > Joshua Ulrich | about.me/joshuaulrich > FOSS Trading | www.fosstrading.com > > ______________________________________________ > 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. > [[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.