> On May 14, 2017, at 10:43 AM, David Winsemius <dwinsem...@comcast.net> wrote: > > >> On May 14, 2017, at 9:08 AM, David Winsemius <dwinsem...@comcast.net> wrote: >> >>> >>> On May 14, 2017, at 8:43 AM, Ranjan Maitra <mai...@email.com> wrote: >>> >>> Thanks, Duncan! >>> >>> This works for the particular case and is, to my mind, a great solution! >>> >>> However, I was wondering: is it possible to use these double dots with >>> another character, such as omega? >>> >>> I apologize for changing the question somewhat, but I did not realize >>> earlier that there were separate codes for putting double dots over >>> different letters and I thought that figuring out the simpler question >>> would be enough for me to figure out the next step. >> >> I think you should be looking for a LaTeX solution. There is a >> tikzDevice-package. >> >> This says you can assemble symbols with backspaces: >> >> https://www.stat.berkeley.edu/~partha/symbols.pdf >> >> For instance, LATEX defines \hbar (“~”) as a “¯” character (\mathchar’26) >> followed by a backspace of 9 math units (\mkern-9mu), followed by the letter >> “h”: >> >> The second example in ?tikz, which could be a starting point for completing >> your task fails on my Mac
And I got Example2 on the ?tikz page working on a mac but removing hte \\Large that I could not seem to get recognized and the extra backslashes: library(tikzDevice) td <- tempdir() tf <- file.path(td,'example2.tex') oldwd <- getwd() setwd(td) syms <-c('alpha','theta','tau','beta','vartheta','pi','upsilon', 'gamma','gamma','varpi','phi','delta','kappa','rho', 'varphi','epsilon','lambda','varrho','chi','varepsilon', 'mu','sigma','psi','zeta','nu','varsigma','omega','eta', 'xi','Gamma','Lambda','Sigma','Psi','Delta','Xi','Upsilon', 'Omega','Theta','Pi','Phi') x <- rnorm(length(syms)) y <- rnorm(length(syms)) tikz(tf,standAlone=TRUE) plot(-2:2, -2:2, type = "n", axes=F, xlab='', ylab='', main='TikZ Device Math Example') text(x,y,paste("$\\",syms, "$", sep=""), cex=3) dev.off() tools::texi2dvi(tf,pdf=TRUE) system(paste(getOption('pdfviewer'),file.path(td,'example2.pdf'))) setwd(oldwd) >> by only displaying the names of the glyphs but not the glyphs themselves in >> the plot, but it might have a better chance of succeeding on a Linux box. > > I'm not having a lot of success finding a "naked umlaut" with which I can > backspace to put above a capital \Omega but I found and answer on how to use > Newtonian differentiation notation in LateX: > > https://tex.stackexchange.com/questions/152951/how-to-write-two-dot-above-a-letter Thanks (amended) to Kirill Müller <krlml...@mailbox.org> and Charlie Sharpsteen, Cameron Bracken, and Yihue Xie for the tikzDevice package: -- David. > > #----------- > > library(tikzDevice) > options(tikzMetricPackages = c("\\usepackage[utf8]{inputenc}", > "\\usepackage[T1]{fontenc}", "\\usetikzlibrary{calc}", > "\\usepackage{amssymb}")) > > tikz("formula.tex", width = 4, height = 4, standAlone = TRUE, > packages = c("\\usepackage{tikz}", > "\\usepackage[active,tightpage,psfixbb]{preview}", > "\\PreviewEnvironment{pgfpicture}", > "\\setlength\\PreviewBorder{0pt}", > "\\usepackage{amssymb}")) > par(mar = c(4, 4, 1, 1)) > plot(1, type = "n", xlab = "$x_1$", ylab = "$x_2$") > text(1, c(0.8), c("$\\ddot{\\Omega}$"), cex = 2.5) > dev.off() > > tools::texi2pdf("formula.tex") > system(paste(getOption("pdfviewer"), "formula.pdf")) > #----------- > > > Best; > David. >> >> Best; >> David. >> >> >>> >>> Thanks again! >>> >>> Best wishes, >>> Ranjan >>> >>> >>> >>> On Sun, 14 May 2017 23:57:50 +1000 Duncan Mackay <dulca...@bigpond.com> >>> wrote: >>> >>>> 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. >>>> >>> >>> >>> -- >>> Important Notice: This mailbox is ignored: e-mails are set to be deleted on >>> receipt. Please respond to the mailing list if appropriate. For those >>> needing to send personal or professional e-mail, please use appropriate >>> addresses. >>> >>> ______________________________________________ >>> 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. >> >> David Winsemius >> Alameda, CA, USA >> >> ______________________________________________ >> 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. > > David Winsemius > Alameda, CA, USA > > ______________________________________________ > 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. David Winsemius Alameda, CA, USA ______________________________________________ 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.