Or perhaps two exclamation points would be better ('unquote' in the tidyverse lexicon, 3 bangs is 'unquote-splice').
Bill Dunlap TIBCO Software wdunlap tibco.com On Thu, Aug 24, 2017 at 10:20 AM, William Dunlap <wdun...@tibco.com> wrote: > Try putting !!! (three exclamation symbols) in front of which(...)==.... > > The non-standard evaluation in the tidyverse can cause confusion. > > Bill Dunlap > TIBCO Software > wdunlap tibco.com > > On Thu, Aug 24, 2017 at 4:32 AM, Eugeny Melamud < > eugeny.mela...@lanit-tercom.com> wrote: > >> Hi all! >> >> The following code (executed in console)... >> somevar <- data.frame(v1 = 1:5, somestring = 6:10, v3 = 11:15, v4 = >> 16:20); >> somevar %>% gather(key = var, value = val, which(names(somevar) == >> "somestring"):length(somevar)) %>% head(2); >> throws... >> Error in which(names(somevar) == "somestring") : >> could not find function "which" >> >> if I change which(names(somevar) == "somestring") with 0 I'll get >> Error in length(somevar) : >> could not find function "length" >> >> So it looks like base package is not loaded. Still if type 'which' in >> console I get >> function (x, arr.ind = FALSE, useNames = TRUE) >> { >> wh <- .Internal(which(x)) >> if (arr.ind && !is.null(d <- dim(x))) >> arrayInd(wh, d, dimnames(x), useNames = useNames) >> else wh >> } >> <bytecode: 0x0000000006c6e258> >> <environment: namespace:base> >> >> base (that contains which function) package is installed. R version is >> 3.4.1 and system is Win8 >> >> Where should I look to understand how to fix the problem? >> >> Thank you in advance! >> Eugeny >> >> >> [[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/posti >> ng-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.