On 07 Sep 2014, at 00:31 , David Winsemius <dwinsem...@comcast.net> wrote:
> The goal: > to create a function modeled after `subset` (notorious for its non-standard > evaluation) that will take a series of logical tests as unqiuoted expressions > to be evaluated in the framework of a dataframe environment and return a > dataframe of logicals: ... A belated peep from the author of subset(): Don't! I think we learned the hard way by now that it is much easier to pass unevaluated expressions in the shape of formula objects or maybe expression objects. Lots of pain can be avoided by slipping in a simple "~". -- Peter Dalgaard, Professor, Center for Statistics, Copenhagen Business School Solbjerg Plads 3, 2000 Frederiksberg, Denmark Phone: (+45)38153501 Email: pd....@cbs.dk Priv: pda...@gmail.com ______________________________________________ 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.
