On Thu, Jun 23, 2011 at 6:30 AM, Uwe Ligges <lig...@statistik.tu-dortmund.de> wrote: > Folks, > > the relevant thing you have to remember is: All the stuff must be valid R > syntax (with few additional functions as mention in the ?plotmath help > file). Knowing that it is obvious where additional "operators" are required. > > Best, > Uwe Ligges >
Actually, I think that may be the source of the confusion. I was thinking about it in terms of *labels*, and there's no intrinsic reason that an axis label or other text caption has to have x and y arguments, even if it otherwise might be an operator. A right arrow, as the original querent asked about, could have other uses in a label than connecting two items. It simply didn't occur to me that it could *only* be used that way, though in other contexts that would make perfect sense. It is only possible to use a binary operator through plotmath, even though the result is a label, and not to talk about a binary operator. That's the missing conceptual bit, at least for me. Sarah -- Sarah Goslee http://www.functionaldiversity.org ______________________________________________ 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.