How can I insert page number to rmarkdown beamer slides?

Question

How can I show page numbers (preferably like 4/10, 5/10 etc.) on an rmarkdown beamer presentation?

Severally

Answer 1

In the front matter of the document, you can include a .tex file with extra commands as shown in RStudio's documentation here.

I created a new .tex file that I called "header_pagenrs.tex" which only includes the top 2 lines from @user4281727's answer:

\setbeamertemplate{navigation symbols}{}
\setbeamertemplate{footline}[page number]

Then I referenced this file at the top of my .Rmd file:

---
title: "Things and Stuff"
author: "Me"
output:
  beamer_presentation:
    includes:
      in_header: header_pagenrs.tex
---

If this still gives you errors, you might also be missing some required TeX packages (a separate problem from RStudio and rmarkdown).

Psychic

Is it possible to remove the page number from the title page? – Barranca

I'm afraid I don't know how! – Psychic

@Psychic I have been using this script for well over a year now, but today it is failing... MAC OSX 10.13.6, R 3.5.2 RStudio 1.1.463. To clarify: same exact document, just recompiling. Now no page number outputs... the header_pagenrs.tex file seems to be causing the include: ... theme: output to malfunction as well – Housemaid

After updating all LaTeX packages, this is largely resolved. The theme I was using ("Malmoe") still has problems; but a switch to a new theme resolves. – Housemaid

Glad to hear that updating packages helped. Unfortunately I have no ideas about how to fix the issue with your original theme. – Psychic

Answer 2

Here's another option that worked for me. Didn't need to add a .tex file to my folder. Just included the following (based on above code from @civilstat) at the top of my Markdown doc.

---
title: 'Your Title'
author: "Your Name"
date: "July 4, 1776"
output:
  beamer_presentation(keep_tex = TRUE): default

header-includes:

- \setbeamertemplate{navigation symbols}{}
- \setbeamertemplate{footline}[page number]
---

Nsf

Answer 3

If your beamer version is reasonable up to date (>= v3.48), you can adjust the format of the frame numbers while keeping the footline of your chosen beamer theme unchanged otherwise.

---
output: 
  beamer_presentation:
    theme: "Berlin"
    keep_tex: true
header-includes:
  - \setbeamertemplate{page number in head/foot}[totalframenumber]
---

test

Signatory

Doesn't do a thing with pandoc. What am I missing? – Emit

@Emit Is your beamer version new enough? (>=v3.48) – Signatory

How do I check (beamer version) via command line? You ask a pertinent question. – Emit

@Emit There should be a .log file in the same folder as the .tex file.This log file should include the version number – Signatory

There is no log file... I am using pandoc -t beamer foo.md -o foo.pdf. – Emit

@Emit I don't know if this rmarkdown syntax with the header includes works for markdown. if yes the keep_tex option should make sure that the log file is also kept – Signatory

Answer 4

Try to put the lines below into the template

\setbeamertemplate{navigation symbols}{}

\setbeamertemplate{footline}[page number]

~/Library/R/3.1/library/rmarkdown/rmd/beamer/default.tex

Bijouterie