In short, use dplyr::summarize or plyr::summarize to select the one you want.
HTH, Peter On Wed, Jan 29, 2014 at 2:19 PM, Trevor Davies <davies.tre...@gmail.com> wrote: > I think I have a hole in my understanding of how R uses packages (or at > least how it gives functions in packages priority). I thought I would give > the new dplyr package a test drive this morning (which is blazingly fast > BTW) and I've gone down the rabbit hole. > > The issue is that I'm unable to use both plyr and dplyr in a program that > I'm writing. When I initially install dplyr and I look at the summarise > function everything works great but if I then install the plyr package the > summarise function from dplyr is then masked with the plyr summarise > function taking priority. I can't seem to figure out a way to get the > dplyr summarise to become the main function... > > What am I missing here? Can you not use the dplyr and plyr packages at the > same time? > > > Example: > ========================= >> require(dplyr) > Loading required package: dplyr > > Attaching package: 'dplyr' > > The following objects are masked from 'package:stats': > > filter, lag > > The following objects are masked from 'package:base': > > intersect, setdiff, setequal, union > >> summarise > function (.data, ...) > UseMethod("summarise") > <environment: namespace:dplyr> >> > ======================= > ***However, if I then install plyr I get what is below and masks the dplyr > summarise function:** > >> require(plyr) > Loading required package: plyr > Attaching package: 'plyr' > The following objects are masked from 'package:dplyr': > arrange, desc, failwith, id, mutate, summarise >> summarise > function (.data, ...) > { > stopifnot(is.data.frame(.data) || is.list(.data) || > is.environment(.data)) > .... > ...} > <environment: namespace:plyr> >> > =============== > ** Then no going back... > require(dplyr) >> summarise > function (.data, ...) > { > stopifnot(is.data.frame(.data) || is.list(.data) || > is.environment(.data)) > .... > ...} > <environment: namespace:plyr> >> > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@r-project.org mailing list > 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 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.