How to show the total number of pages in a PDF via the RMarkdown (i.e. display "Page 1 of 10&qu-CodePudding

Given the code below, which currently outputs the page number on top of the page, I would like it to output the PDF page count as in Page 1 of 3. I have done a lot of searching but haven't found any way to include the total page number.

Question Is this possible to do w/ in R Markdown ? If not, are there any workarounds ?

I have googled this and haven't found anything obvious such as YAML or TeX solutions, however, I may be missing something or not searching for the correct things.

RMarkdown Code

---
title: "R Markdown Example With Numbered Sections"
output:
  bookdown::pdf_document2:
    toc: true
    toc_depth: 6
    number_sections: true
    includes:
        in_header: header.tex
header-includes:
- \usepackage{fancyhdr}
- \pagestyle{fancy}
- \fancyhead[RO,RE]{\thepage}
- \fancyhead[LO,LE]{Header Message}
- \fancyfoot[LE,LO]{Footer Messge on the Left}
- \fancyfoot[LE,RO]{Footer Messge on the Right}
---

\thispagestyle{fancy}

# Example R Rarkdown : Numbered Sections

## R Markdown

### Description

Some description text

\newpage

#### Details

Details go here.

\newpage

## Plots

Plots go here

\newpage

Last page

Current header

Desired Header

CodePudding user response：

Make sure you have the lastpage package installed.

Then modify your header includes to look like this:

header-includes:
  - \usepackage{fancyhdr}
  - \usepackage{lastpage}
  - \pagestyle{fancy}
  - \fancyhead[RO,RE]{\thepage\ of \pageref{LastPage}}
  - \fancyhead[LO,LE]{Header Message}
  - \fancyfoot[LE,LO]{Footer Messge on the Left}
  - \fancyfoot[LE,RO]{Footer Messge on the Right}