Duncan, Thank you. What I meant was that "^" is the only *arithmetic operator* to result in a matrix on operating in a data.frame. I understand it's quite old code. Also, your explanation makes sense, with the exception of "/" operator, I suppose (I could be wrong here).
Arun On Thursday, November 14, 2013 at 12:32 AM, Duncan Murdoch wrote: > > It's not just ^ that is missing, the logical relations like <, ==, etc > also return matrices. This is very old code (I think from 1999), but I > would guess that the reason is that the ^ and < operators always return > values of a single type (numeric and logical respectively), whereas the > other operators can take mixed type inputs and return mixed type outputs. > > Duncan Murdoch > > > Please let me know if I should be posting this to R-devel list instead. > > > > Thank you very much, > > Arun > > > > > > [[alternative HTML version deleted]] > > > > ______________________________________________ > > R-help@r-project.org (mailto: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. > > > > > [[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.
