On Dec 2, 2013, at 1:01 PM, Duncan Murdoch wrote: > On 02/12/2013 2:22 PM, Jacob Wegelin wrote: >> I want to put the "plus or minus" symbol into a character variable, so that >> this can be turned into a factor and be displayed in the "strip" of a >> faceted ggplot2 plot. >> >> A very nice solution, thanks to Professor Ripley's post of Nov 16, 2008; >> 3:13pm, visible at >> http://r.789695.n4.nabble.com/Symbols-to-use-in-text-td874239.html and >> subsequently http://www.fileformat.info/info/unicode/char/00b1/index.htm, is: >> >> junk<- "\u00B1" >> print(junk) >> snipped >> Is there a "native R" way to do this? > > That is native R.
There is also plotmath's '%+-%' operator: plot(1,1, ylab = expression( A %+-% B ), xlab=expression( C%+-% D ) ) I noticed that Jacob was using ggplot2. Generally one can eventually find ways to label ggplot2 output with R expressions (used in the strict R language sense of the word), although sometimes it has been difficult for me to find the methods in the help pages. -- David. > > Duncan Murdoch >> >> I did this in: >> >> > sessionInfo() >> R version 2.15.3 (2013-03-01) >> Platform: x86_64-apple-darwin9.8.0/x86_64 (64-bit) >> >> >> >> Incidentally (and for the sake of keyword searches): Although a google >> search initially led me to posts about expression() and plotmath, those >> eventually had nothing to do with the solution. >> >> Jacob A. Wegelin > David Winsemius Alameda, CA, USA ______________________________________________ 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.
