awesome, works perfectly. LISP-iness to the rescue. thanks much!
-m On Wed, Nov 14, 2012 at 12:26 PM, William Dunlap <wdun...@tibco.com> wrote: > I recommend using bquote(), with its .() substitution operator, instead of > substitute any time you use plotmath. To make a vector of plotmath > expressions use the following sort of as.expression(lapply(... bquote > ...)) idiom: > > plot(1:10, axes=FALSE) > at <- axTicks(1) > lab <- as.expression(lapply(at, function(a)bquote(10^.(a)))) > axis(1, at=at, lab=lab) > > Bill Dunlap > Spotfire, TIBCO Software > wdunlap tibco.com > > > > -----Original Message----- > > From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] > On Behalf > > Of Murat Tasan > > Sent: Wednesday, November 14, 2012 9:06 AM > > To: r-help@r-project.org > > Subject: [R] vectorized plotmath expressions via substitute() > > > > hi all - i've seen versions of this question before, but none seem to get > > directly at my solving my (probably very simple) issue: > > > > i simply want to annotate the tick marks on an axis with (superscripted) > > 10^x notation, and tried this: > > > > axis(1, at = axTicks(1), as.expression(substitute(10^foo, list(foo = > > axTicks(1)))) > > > > thinking the as.expression/substitute would create the appropriate > > expression vector from the expansion of the foo vector. > > i'm continually stuck in the error process, however, with axis() where R > > complains that i've only provided a single label. > > i must be missing a function that explicitly "unfolds"(?) the result of > the > > substitute() call, without actually evaluating the contents of that call? > > > > sorry in advance if this is clear in the docs somewhere, though i just > > can't seem to locate it :-/ > > > > cheers and thanks for any pointers! > > > > -murat > > > > [[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. > [[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.
