The "pronoun dot" is used in conjunction with %>% in dplyr (which imports magrittr).
See pag.9, paragraph "Placing lhs elsewhere in rhs call" of the document: https://cran.r-project.org/web/packages/magrittr/magrittr.pdf -- GG ______________________________________________ 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.