r - 指定自定义主题、序言和包含在使用 R 降价生成的 beamer 演示文稿的 YAML 标头中的路径

Question

在使用 生成的投影仪演示文稿中rmarkdown::beamer_presentation，我的目标是应用一个自定义主题，其中包含一个beamerthemeTHEMENAME.sty（带有子文件beamercolorthemeTHEMENAME.sty, beamerfontthemeTHEMENAME.sty, beamerinnerthemeTHEMENAME.sty, beamerouterthemeTHEMENAME.sty），作为 a template.tex和Includes。

目前我在 YAML-header 中获取这些文件，如下所示：

theme: "THEMENAME"
template: template.tex
includes:
  in_header: preamble.tex
  before_body: before_body.tex
  after_body: after_body.tex

为了更整齐地组织演示文稿及其文件，我想移动这些文件......

• 到演示目录的子文件夹（短期解决方案）

• 到一个通用文件夹，这样的模板同样可以由其他演示文稿获取/应用于其他演示文稿（长期解决方案）。

在每种情况下，我将如何调整 YAML 标头以正确获取上述文件？

标签： rlatexr-markdownmarkdownbeamer

Answer 1

同时，我找到了一个短期内有效的答案。
（有关长期解决方案的提示，请参阅@Steven 的回答和@Samcarter_is_at_topanswers.xyz 的评论。）

• 将自定义主题的所有文件THEMENAME以及任何包含（例如，preamble.tex）beamer_files拖放到演示文稿的 Rmd 文件所在的文件夹中称为子文件夹中。

• 修改 YAML 标头，beamerthemeTHEMENAME.sty如下所示。根据这些 SO 答案（LaTex 主题、冒号），需要一些 LaTex hacks 才能LaTex beamer theme顺利应用rmarkdown::beamer_presentation.

MWE.Rmd

---
# COMMENT out "title" in YAML header: else markdown generates a second title page
# ==> if title contains no special characters: feed it straight into LaTex at the end of the YAML header
# ==> if title contains special characters, like ":", feed it in "preamble.tex" sourced in "LaTex Hacks"
subtitle: "Beamer presentation with R-markdown"
institute: "some place"
date: "`r format(Sys.time(), '%B %d, %Y')`"
output:
  # beamer_presentation: default
  bookdown::pdf_book:
    base_format: rmarkdown::beamer_presentation
    # Source below in "LaTex Hacks", if want theme to be stored in subfolder (else rmarkdown does not find it)
    # theme: "THEMENAME"
    # Source "includes" below in "LaTex Hacks" if using custom theme with custom title page
    # => else, markdown places the includes at inadequate position in LaTex file, which then either does not show the title or throws an error
    # includes: ...
    latex_engine: xelatex
    toc: false
    slide_level: 2
classoption: aspectratio=169 # fix aspect ratio of presentation (169 => 16:9, 149 => 14:9, default: 4:3)
#
# LaTex Hacks
# --------------------------
compact-title: false # to remove markdown generated title frame
header-includes:
  # - \title{Title if no special characters} 
  - \input{beamer_files/beamerthemeTHEMENAME.sty}
  - \input{beamer_files/preamble}       # feed title to LaTex in preamble.tex due to ":"
  - \def\titlefigure{img/my_bg}
  - \AtBeginDocument{\titleframe} # add title frame defined in beamerouterthemeTHEMENAME
  - \makeatletter\beamer@ignorenonframefalse\makeatother
  ---


​```{r setup, include=FALSE}
knitr::opts_chunk$set(echo = FALSE)
​```

<!-- TOC - Table of Contents -->
<!-- ======================================================== -->

``` {=latex}
\end{frame}
\tocframe
\begin{frame}
```

## Slide with Bullets
<!-- ======================================================== -->

- Bullet 1
- Bullet 2
- Bullet 3

<!-- Appendix -->
<!-- ======================================================== -->
``` {=latex}
\end{frame}
\appendix
\begin{frame}
```

beamerthemeTHEMENAME.sty

% WAS:
% \usecolortheme{THEMENAME}
% \useoutertheme{THEMENAME}
% NOW:
\input{beamer_files/beamercolorthemeTHEMENAME.sty}
\input{beamer_files/beamerouterthemeTHEMENAME.sty}

\mode<all>

序言.tex

% "title" is commented out in YAML header: else markdown generates a second title page
% if title contains no special characters: feed it straight into LaTex at the end of the YAML header
% if title contains special characters, like ":" or a forced linebreak feed it to LaTex here:
\title[short version]{First line of the title:\par second line of the title}