Hi I just had to do something similar in windows with \"{u}. Try Unicode symbol - see ?plotmath
ggplot(data, aes(x=X)) + geom_line(aes(y = Z), size=0.43) + xlab(expression(atop(top,bold(Age~"\u00e4")))) Regards Duncan Duncan Mackay Department of Agronomy and Soil Science University of New England Armidale NSW 2351 Email: home: mac...@northnet.com.au -----Original Message----- From: R-help [mailto:r-help-boun...@r-project.org] On Behalf Of Ranjan Maitra Sent: Saturday, 13 May 2017 22:48 To: r-h...@stat.math.ethz.ch Subject: Re: [R] display double dot over character in plotmath? On Fri, 12 May 2017 23:39:14 -0700 Daniel Nordlund <djnordl...@gmail.com> wrote: > On 5/12/17 4:55 PM, Ranjan Maitra wrote: > > Hi, > > > > Is it possible to display double dot (umlaut) over a character such as would be possible using \ddot x in LaTeX? I can do this using tikzDevice but I wanted something simpler to point to. > > > > Here is an example of what I would like to do, but it is not quite there: > > > > require(ggplot2) > > data<-as.data.frame(c("a","b","c","a","b","c")) > > colnames(data)<-"Y" > > data$X<-c(1:6) > > data$Z<-c(1,2,3,1,2,3) > > > > ggplot(data, aes(x=X)) + geom_line(aes(y = Z), size=0.43) + xlab(expression(atop(top,bold(Age~"à")))) > > > > I would like to put in a double dot over the "a" in the x-axis instead of "`". > > > > Many thanks for any suggestions and best wishes, > > Ranjan > > > > You haven't told what OS you are using, but with Windows OS, you can get > the 'ä' by making sure the NUMLOCK key is on, hold down the alt key and > press 0228 on the numeric keypad. > > I am sorry, I use a linux operating system. I use Fedora 25 but the student I wanted to show this uses Ubuntu, though I don't know if the distribution matters. Thanks again for your help, and best wishes, Ranjan ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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. ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.