I'm trying to transfer a LaTeX/LyX presentation into a Beamer markdown document.
On some slides I suspend the background image (which has logos of funding bodies on it) to make more space for code output.
I previously did this with the following command:
\bgroup
\usebackgroundtemplate{\includegraphics[width=\paperwidth]{background.png}}
\begin{frame}[plain]
Some text here!}
\end{frame}
\egroup
I have tried something like this (which doesn't work):
\bgroup
\pgfdeclareimage[width=\paperwidth]{empty}{Template_blank.png}
\usebackgroundtemplate{\pgfuseimage{empty}}
## New Slide
some text
\egroup
Any ideas?
Normally switching between different background templates is a piece of cake in beamer, based on https://tex.stackexchange.com/questions/173201/beamer-template-with-different-style-options-for-frames one can simply create a new frame option.
Unfortunately rmarkdown simply ignores user created frame options and only passes on a tiny list of predefined options. To trick rmarkdown one could repurpose a frame option which is normally not used by beamer, the standout frame option (it is only used by the metropolis theme)
---
output:
beamer_presentation:
keep_tex: true
includes:
header-includes: |
\usepackage{etoolbox}
\defbeamertemplate{background canvas}{mydefault}{%
\includegraphics[width=\paperwidth,height=\paperheight]{example-image-duck}
}
\defbeamertemplate{background canvas}{standout}{%
\includegraphics[width=\paperwidth,height=\paperheight,page=2]{example-image-duck}
}
\BeforeBeginEnvironment{frame}{%
\setbeamertemplate{background canvas}[mydefault]%
}
\makeatletter
\define#key{beamerframe}{standout}[true]{%
\setbeamertemplate{background canvas}[standout]%
}
\makeatother
---
# frametitle
test
# frametitle with different background {.standout}
test
# frametitle
test
Related
Is there a way to use a custom highlighting style in rmarkdown?
Manual is a bit silent regarding that and the closest to that is to make a full blown custom css file for everything, that would however work only for html_document and not for pdf_document (see https://bookdown.org/yihui/rmarkdown/html-document.html#appearance-and-style )
The newer versions of Pandoc support this:
http://pandoc.org/MANUAL.html#syntax-highlighting
but when anything else but one of the default pandoc styles is specified, rmarkdown throws an error.
For example, when I download zenburn.css from highlight.js library, modify it and want to use it:
```
title: Some title
output:
html_document:
theme: readable
highlight: zenburn.css
```
I get:
Error in match.arg(highlight, html_highlighters()) :
'arg' should be one of “default”, “tango”, “pygments”, “kate”, “monochrome”, “espresso”, “zenburn”, “haddock”, “textmate”
Calls: ... -> pandoc_html_highlight_args -> match.arg
Execution halted
For posterity, since this took more time than it should:
The problem
Answers from #martin_schmelzer is correct (didn't test #tarleb's solution, since rmarkdown doesn't supposedly play well with Pandoc > 2.0 see: https://github.com/rstudio/rmarkdown/issues/1471 ). However, when you write echo=TRUE on chunk, the output is code is not tagged as R code and because of that different rules apply for it. In HTML it means that it has white background and with PDF it is formatted through verbatim environment only. For example, the markdown of following:
```{r, echo=TRUE}
foo = "bar"
foo
```
will be:
```r
foo = "bar"
foo
```
```
## [1] "foo"
```
And while the first chunk will be highlighted, the second will follow only in text color, but background will always be white. This is very problematic with darker themes, since they often have very light text color and this does not play nicely with white background. See: https://eranraviv.com/syntax-highlighting-style-in-rmarkdown/ for overview of rmarkdown highlighting styles.
HTML solution
This is made more complicated with switch between highlight.js and pandoc highlighting. If highlighting is not specified, highlight.js is used with associated tags. There the highlighting is done through external css and .js library, which are then (I presume) hashed into the HTML to make it stand-alone. So no luck there.
If some highlighting style is used however, then pandoc highlighting is used. I.e.,:
---
title = "Foo"
output:
html_document:
theme: readable
highlight: zenburn
---
In this case, there IS solution. Looking at the HTML output, there is this structure:
<style typetext/css">
pre:not([class]) {
background-color: white;
}
</style>
This means that whenever there is no style in specific code chunk (applies only to the "echo" chunks since by default rmarkdown assumes R), the background is white. This behaviour can be changed just by including following chunk in the .Rmd file:
```{css, echo = FALSE}
pre:not([class]) {
color: #333333;
background-color: #cccccc;
}
```
and their behaviour can be fully specified accordingly. Here the color and background as reverse of the zenburn style. The output looks like this:
Before:
After:
PDF solution
With PDF, it is a little bit easier to find the problem, but little bit more complicated to solve it. If one looks at the .tex file, you can see that while all the chunks with an actual code have a lot of going on around them, the echo chunks are wrapped only in a simple verbatim environment. The result looks like this:
While it is more readable than the HTML output, since it does not share the text color defined by highlighting style, it kind of blends into the text and creates and breaks the feeling of uniform style across outputs. The solution is, as mentioned in previous answer, to use:
---
title: "Foo"
output:
pdf_document:
highlight: zenburn
includes:
in_header: highlight_echo.tex
---
And a following construct that utilize package framed which is already included:
\usepackage{xcolor}
\definecolor{backgroundecho}{HTML}{cccccc}
\definecolor{textecho}{HTML}{333333}
\let\oldverbatim=\verbatim
\let\oldendverbatim=\endverbatim
\makeatletter
\renewenvironment{verbatim}{
\def\FrameCommand{
\hskip-\fboxsep
\color{textecho}
\colorbox{backgroundecho}
}
\MakeFramed{\#setminipage}
\oldverbatim
}
{
\oldendverbatim
\vskip-2em\#minipagefalse % The size required for this negative space is probably in some variable
\endMakeFramed
}
\makeatother
This redefine the verbatim environment to have colored background and colored text. The result is unified formatting of the "echo" chunks:
So thanks again #tarleb and #martin_schmelzer, I wouldn't be able to solve it without you!
It appears that you are trying to use a CSS file as a highlight style. This won't work (in general), as pandoc expects a highlighting styles to be defined using a special JSON format. To use a modified zenburn, one will have to create a new style file via pandoc --print-highlight-style zenburn > myzenburn.style, and then modify the new file myzenburn.style.
To use the new style, one must circumvent R Markdown by passing the necessary options directly to pandoc.
output:
html_document:
theme: readable
pandoc_args: --highlight-style=myzenburn.style
However, this will only work for non-HTML output formats, as knitr interferes whenever highlight.js can be used.
At least for HTML documents, you can simply include your customized styles using the css YAML option:
---
title: Some title
output:
html_document:
theme: readable
css: zenburn.css
---
Concerning PDF documents, you could check the intermediate TeX file. There you will find a block of commands that look like
\newcommand{\CommentTok}[1]{\textcolor[rgb]{0.96,0.35,0.01}{\textit{#1}}}
\newcommand{\KeywordTok}[1]{\textcolor[rgb]{0.93,0.29,0.53}{\textbf{#1}}}
These are the lines that define the code highlighting. The first one for example defines the color for comments. You could write a header.tex in which you redefine these commands using \renewcommand
\renewcommand{\CommentTok}[1]{\textcolor[rgb]{0.56,0.35,0.01}{\textit{#1}}}
\renewcommand{\KeywordTok}[1]{\textcolor[rgb]{0.13,0.29,0.53}{\textbf{#1}}}
and include it in your document right before the body.
Here is an example in which we alter the highlighting of comments and keywords within the body:
---
title: Some title
output:
pdf_document:
keep_tex: true
---
```{r}
# This is a test
head(mtcars)
```
\renewcommand{\CommentTok}[1]{\textcolor[rgb]{0.96,0.35,0.01}{\textit{#1}}}
\renewcommand{\KeywordTok}[1]{\textcolor[rgb]{0.93,0.29,0.53}{\textbf{#1}}}
```{r}
# This is a test
head(mtcars)
```
I have some .Rmd files in which I need to make some changes to the layout in subsections. This example shows what I need to do.
This is an example Rmd code:
---
title: "test"
output:
pdf_document:
latex_engine: xelatex
number_sections: yes
toc: yes
toc_depth: 3
html_document: default
mainfont: Calibri Light
header-includes:
- \usepackage[dutch]{babel}
- \usepackage{fancyhdr}
- \pagestyle{fancy}
- \fancyfoot[LE,RO]{test}
- \usepackage{floatrow}
- \floatsetup[table]{capposition=top}
- \usepackage{dcolumn}
- \usepackage{here}
- \usepackage{caption}
- \captionsetup{labelsep=space,justification=justified,singlelinecheck=off}
---
# Article
## title
#### subsubsubtitle {-}
Here is some text
The result if generating pdf is:
But what I really want is:
So I want the text to be starting on the next line instead of right after the section header. (Also I don't want the subsection to be numbered and, that's why I put the {-} right after it.)
Does someone know how to manage this?
This addresses the Latex side of the problem.
The \paragraph, which is what \subsubsubsection is, just has different formatting and presentation. One of the things is that it doesn't start a new line. This is in pure Latex.
Ways around it:
The package titlesec allows you to customize the title appearance a lot. See this post.
Do it in Latex itself -- [re]define how \paragraph works -- see the above post, and/or this post.
Tweak it in the next itself, adding a newline. See below.
There may be a more direct way in .Rmd but I am not familiar with it and this has the Latex tag.
I have to address another aspect of this, without debating poster's purpose. Such deep hierarchy may indicate a need to rethink the structure. Does it help in making the document easier and more intuitive to use, or does it do the opposite?
With that out of the way, here are some direct ways of making it add a line, as requested.
Tweak it in the text itself, so that it takes a newline (\newline alone doesn't work).
\paragraph{title_text}
\mbox{ }\\
paragraph text here
Another way
\paragraph{title_text} \hspace{0pt} \\
paragraph text here
With titlesec package you can redefine the \paragraph, by changing [runin] to [hung]
\usepackage{titlesec}
\titleformat{\paragraph}[hung] % default is [runin]
{\normalfont\normalsize\bfseries}
{\theparagraph}{1em}{}
Or, can explicitly change the spacings
\usepackage{titlesec}
\titleformat{\paragraph}
{\normalfont\normalsize\bfseries}{\theparagraph}{1em}{}
\titlespacing*{\paragraph}
{0pt}{3.25ex plus 1ex minus .2ex}{1.5ex plus .2ex}
For a succinct summary of the titlesec package see this post.
All this is straight-up Latex and I am not sure how it works with .Rmd.
I am trying to add section slides to a beamer presentation written in rmarkdown using the latex command \section{}. However, it gets inserted between a \begin{frame} & \end{frame} automatically during the conversion, which causes the compilation to fail. Is there any way to stop this happening so that the section slide can be added without having to manually edit the tex file?
Here is my rmarkdown code:
---
title: "Beamer presentation"
output: beamer_presentation
---
\section{Section one}
which gets converted to:
\title{Beamer presentation}
\begin{document}
\frame{\titlepage}
\begin{frame}
\section{Section one}
\end{frame}
\end{document}
Slides and section slides are both defined by markdown headings, a series of # character at the beggining of a line, the number of # indicating the hierarchical level of the title.
By default [the level that defines frames] is the highest header level in the
hierarchy that is followed immediately by content, and not another
header, somewhere in the document.
All title of higher level than this one will become section titles.
From the rmarkdown documentation ; See also the pandoc documentation on slideshows.
For instance :
# Section title
## Frame title
Frame content
### Subtitle inside a frame
I'm trying to add frame numbers to my Beamer presentation written in rmarkdown. However, I would like to suppress the numbers on the title page using the \begin{frame}[plain] option (from the second answer here: https://tex.stackexchange.com/questions/82794/removing-page-number-from-title-frame-without-changing-the-theme). However, when compiling from rmarkdown to tex, the \titlepage already creates a frame environment, so in effect I get a double frame and thus an error.
So when compiling this:
---
output:
beamer_presentation:
includes:
in_header: header.tex
---
\begin{frame}[plain]
\titlepage
\end{frame}
I get this in latex:
\begin{frame{
\begin{frame}
\titlepage
\end{frame}
\end{frame}
In the header.tex I have this:
\let\otp\titlepage
\renewcommand{\titlepage}{\otp\addtocounter{framenumber}{-1}}
So my workaround now is to just use a plain \maketitle in rmarkdown, then compile to .tex, add the [plain] option, then compile to pdf. However, I would like to avoid that intermediate step. Is this possible in rmarkdown?
rmarkdown uses pandoc to convert a Rmd file to a pdf via beamer/latex. pandoc uses templates to control how the conversion goes.
One way to deal with your problem is to :
Download the default beamer template rmarkdown uses and open it.
Change line 137 from this :
\frame{\titlepage}
To this :
\frame[plain]{\titlepage}
Add the path to your modified template in your Rmd file :
---
output:
beamer_presentation:
includes:
in_header: header.tex
template:/path/to/new/template.tex
---
Note that you need to specify the whole path, or store the template where pandoc can find it (~/.pandoc/templates on a linux machine)
Add {.plain} after the title as in:
----
# I'm the title {.plain}
Source: Pandoc User’s Guide
I am trying to insert logo into beamer presenation using Rmarkdown, and it looks like size controls in \logo{\includegraphics[height=1cm,width=3cm]{logo.png}} do not work, no matter what values I put there, image is always of the same size. Any suggestions besides modifying image manually?
---
title: "Presentation"
author: "Author"
output:
beamer_presentation:
includes:
in_header: mystyle.tex
---
## R Markdown
This is an R Markdown presentation. Markdown is a simple formatting
syntax for authoring HTML, PDF, and MS Word documents. For more
details on using R Markdown see <http://rmarkdown.rstudio.com>.
When you click the **Knit** button a document will be generated that
includes both content as well as the output of any embedded R code
chunks within the document.
## Slide with Bullets
- Bullet 1
- Bullet 2
- Bullet 3
## Slide with R Code and Output
```{r}
summary(cars)
```
## Slide with Plot
```{r, echo=FALSE}
plot(cars)
```
This is mystyle.tex
\logo{\includegraphics[height=1cm,width=3cm]{logo.png}}
\usetheme{Madrid}
\usefonttheme{serif}
\institute{Institute}
\setbeamertemplate{navigation symbols}{}
UPDATE: Quick work around - simply modifying image will not work - image is ugly and pixelated. Simply converting to pdf also didn't work well, so I used following R code to create pdf and use it in \logo{\includegraphics{logo.pdf}}
library(png)
library(grid)
img <- readPNG('logo.png')
img <- rasterGrob(img, interpolate=TRUE)
pdf(file = 'logo.pdf', width = 1, height = 0.25)
grid.newpage()
grid.raster(img)
dev.off()
I found solution; in beamer manual there is another way of using logo function and it works fine.
\pgfdeclareimage[height=0.2787cm, width=2.5cm]{logo}{logo.png}
\logo{\pgfuseimage{logo}}
I found this beamer tutorial quite useful. Just add the following to the file mystyle.tex passed to the YAML option in_header (as shown in the question):
\usepackage{tikz}
\titlegraphic {
\begin{tikzpicture}[overlay,remember picture]
\node[left=0.2cm] at (current page.30){
\includegraphics[width=3cm]{Beamer-Logo}
};
\end{tikzpicture}
}
and then you can play around with the node parameters to adjust the placement of your logo (Beamer-Logo).