[R-pkg-devel] RES: MathJax for Rd files

Viechtbauer, Wolfgang (SP) wo||g@ng@v|echtb@uer @end|ng |rom m@@@tr|chtun|ver@|ty@n|
Wed May 13 20:38:27 CEST 2020

Glad to hear that. I might consider adding a function along those lines to mathjaxr itself, to make it easier to preview files while working on a help page.


>-----Original Message-----
>From: Tiago Olivoto [mailto:tiagoolivoto using gmail.com]
>Sent: Wednesday, 13 May, 2020 20:31
>To: Viechtbauer, Wolfgang (SP); 'Duncan Murdoch'; r-package-devel using r-
>Subject: RES: [R-pkg-devel] RES: MathJax for Rd files
>Thank you so much! It works!
>In my example, I've created a simple helper function, preview_rd()
>preview_rd <- function(rdfile){ # without '.rd'
>Rd <- file.path(paste("man/", rdfile, ".rd", sep = "")) # specify the .Rd
>file you want to preview
>outfile <- tempfile(fileext = ".html")
>browseURL(tools::Rd2HTML(Rd, outfile, macros="D:/Documents/R/win-
>I added the macros \loadmathjax and \mjsdeqn in the mgidi.R file, ran
>devtools::document() and then preview_rd("mgidi")
>The html was rendered nicely (in my browser) and shows the equation without
>installing the package.
>That's what I was looking for.
>Thanks again!
>-----Mensagem original-----
>De: Viechtbauer, Wolfgang (SP)
><wolfgang.viechtbauer using maastrichtuniversity.nl>
>Enviada em: quarta-feira, 13 de maio de 2020 14:41
>Para: Duncan Murdoch <murdoch.duncan using gmail.com>; tiagoolivoto using gmail.com; r-
>package-devel using r-project.org
>Assunto: RE: [R-pkg-devel] RES: MathJax for Rd files
>Thanks, Duncan. I was about to respond to suggest the same thing.
>One way of getting this to work:
>Rd <- file.path("<path>/<file>.Rd") # specify the .Rd file you want to
>preview outfile <- tempfile(fileext = ".html") browseURL(tools::Rd2HTML(Rd,
>outfile, macros="<path to library where mathjaxr is
>>-----Original Message-----
>>From: Duncan Murdoch [mailto:murdoch.duncan using gmail.com]
>>Sent: Wednesday, 13 May, 2020 19:30
>>To: tiagoolivoto using gmail.com; Viechtbauer, Wolfgang (SP); 'Helmut
>>Schütz'; r- package-devel using r-project.org
>>Subject: Re: [R-pkg-devel] RES: MathJax for Rd files
>>On 13/05/2020 12:35 p.m., Tiago Olivoto wrote:
>>> Thanks, Wolfgang and Helmut for the explanations.
>>> When I was trying to use
>>> #'\if{html}{\out{'<script id="MathJax-script" async
>>> #''src="https://cdn.jsdelivr.net/npm/mathjax@3.0.5/es5/tex-chtml-full
>>> .js
>>> #'</script> }}
>>> #'
>>> #'And then typing
>>> #' \ifelse{html}{\out{\[\sqrt{a^2}\]}}{\deqn{\sqrt{a^2}}}
>>> My mgidi.Rd file was produced with devtools::document(); then, I just
>>> used ?mgidi, and the html page was rendered nicely.
>>> If I could do the same with mathjaxr, It would be nice, because I
>>> wouldn't
>>need to install the package to see if the equations are as I expect
>>> Anyway, mathjaxr is a very useful package.
>>> Congratulations on the efforts for developing it.
>>Sounds like it's a devtools issue.  I don't know how they are
>>simulating the install, but it needs to say to use the mathjaxr macros
>>when converting the Rd pages.
>>Duncan Murdoch
>>> Best
>>> Olivoto
>>> -----Mensagem original-----
>>> De: Viechtbauer, Wolfgang (SP)
>><wolfgang.viechtbauer using maastrichtuniversity.nl>
>>> Enviada em: quarta-feira, 13 de maio de 2020 13:14
>>> Para: Helmut Schütz <helmut.schuetz using bebac.at>;
>>> tiagoolivoto using gmail.com; r-
>>package-devel using r-project.org
>>> Assunto: RE: [R-pkg-devel] MathJax for Rd files
>>> Thanks for the info! Can confirm now that I tried this (I don't
>>> usually
>>use RStudio). That's an RStudio issue then. My guess is that 'Preview'
>>tools::Rd2HTML() and that indeed won't automatically understand macros
>>coming from mathjaxr (or any add-on package for that matter). This
>>would be an issue to raise with the RStudio folks then.
>>> But once a package is installed, the equations are nicely rendered
>>> also in
>>the RStudio help browser, so that part works.
>>> Best,
>>> Wolfgang
>>>> -----Original Message-----
>>>> From: Helmut Schütz [mailto:helmut.schuetz using bebac.at]
>>>> Sent: Wednesday, 13 May, 2020 17:01
>>>> To: Viechtbauer, Wolfgang (SP); tiagoolivoto using gmail.com;
>>>> r-package-devel using r- project.org
>>>> Subject: Re: [R-pkg-devel] MathJax for Rd files
>>>> Hi Wolfgang,
>>>> Viechtbauer, Wolfgang (SP) wrote on 2020-05-13 16:53:
>>>>> Seems like you are using roxygen2. I have little experience with
>>>>> that, as
>>>> all my Rd files are 'handcrafted' (plus 100% organic and biodegradable).
>>>> As are mine. ;-)
>>>> In the HTML-preview of RStudio the LaTeX is indeed not parsed. I get
>>>> it only (in the HTML man-page and the PDF) if I build the package.
>>>> Helmut
>>>> --
>>>> Ing. Helmut Schütz
>>>> BEBAC – Consultancy Services for
>>>> Bioequivalence and Bioavailability Studies Neubaugasse 36/11
>>>> 1070 Vienna, Austria
>>>> E helmut.schuetz using bebac.at
>>>> W https://bebac.at/
>>>> F https://forum.bebac.at/

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