Change font family in PDF-output of kableExtra - r-markdown

I am writing a document in R markdown and changed the font to Arial, with the help of the following YAML-header:
---
title: ""
output:
pdf_document:
latex_engine: xelatex
fontsize: 12pt
mainfont: Arial
---
In my document I am using kableExtra to output a table. However, while the text in the PDF-output is indeed in Arial, the text inside my table is still displayed in the default R markdown font in the PDF-output.
Is there any way to adjust the font family in kableExtra?
Thank you for any tips!

Related

Render multiple outputs from one Rmd

This is allegedly possible, but when I use the code example from the RMarkdown Book, I get only one output, whichever output is listed first.
---
title: Render a table in a tiny environment
output:
pdf_document: default
html_document: default
---
````{r, setup, include=FALSE}
knitr::opts_chunk$set(echo = FALSE)
options(knitr.table.format = function() {
if (knitr::is_latex_output()) 'latex' else 'pandoc'
})
````
I am using the most up-to-date versions of RStudio 2022.07.1 & knitr=1.39
Option 1
you can use rmarkdown::render in knit yaml key and specify ouput_format = "all" to render the documents to all the specified formats in the yaml section.
---
title: Render a table in a tiny environment
output:
pdf_document: default
html_document: default
knit: (function(inputFile, encoding) {
rmarkdown::render(inputFile, encoding = encoding,
output_dir = "output", output_format = "all") })
---
```{r setup, include=FALSE}
knitr::opts_chunk$set(echo = TRUE)
```
## R Markdown
This is an R Markdown document. 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>.
After clicking on Knit, you will have both pdf and html file in the output folder.
Option 2
Which is actually the same thing as option 1, but uses a bit different workflow.
In your Rmd file yaml section, you simply specify the output format like this,
---
title: Render a table in a tiny environment
output:
pdf_document: default
html_document: default
---
```{r setup, include=FALSE}
knitr::opts_chunk$set(echo = TRUE)
```
## R Markdown
This is an R Markdown document. 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>.
Then in the console or another r-script, run this,
rmarkdown::render('multiple_output.Rmd',output_dir = "output", output_format = 'all')
Again, similarly you will have both pdf and html file in the output folder.

Rmarkdown beamer slides does not show itemise bullets

I was trying to write create some beamer slides in Rmarkdown. Since the beamer slides would need to include some Chinese characters, I have to specify xelatex as the latex engine.
However, recently I found that the xelatex engine has a problem (the problem was not here a month ago): When using xelatex as the latex engine, the itemise bullets in beamer slides disappeared.
Does anyone know how to resolve this issue?
Below is a minimum working example:
---
title: trial doc
institute: |
| Department trial
| trial Education
Date: "17 October 2020"
output:
beamer_presentation:
theme: "CambridgeUS"
colortheme: "dolphin"
slide_level: 3
latex_engine: xelatex
df_print: kable
classoption: "aspectratio=169"
fontsize: 10pt
mainfont: Times New Roman
header-includes:
- \setbeamercolor{frametitle}{bg=white}
- \usepackage{ctex}
- \AtBeginSubsection{}
- \AtBeginSection{}
- \setbeamerfont{frametitle}{series=\bfseries}
- \AtBeginDocument{\title[xxx]{xxxxx}}
- \AtBeginDocument{\institute[xxxxx]{\\Department of xxx\\xxx}}
- \AtBeginDocument{\author[xxxxxx]{XXX}}
---
\frametitle{Outline}
\tableofcontents
# 欢迎
\frametitle{\textbf{Welcome}}
some text
some Chinese text 你好
trying to itemize:
- Hello
- subitem
trying some numbered list:
1. hello
2. hello
And the output I get is as below:
Output from the code above
When I try using pdflatex as the latex engine (in which case I cannot use the ctex package and cannot include Chinese characters in my beamer slides), the itemize and numbered list works perfectly.
Really appreciate if someone can help me with this!
As provided by #samcarter_is_at_topanswers.xyz above, I solved this problem by following the steps in github.com/pgf-tikz/pgf/issues/928#issuecomment-700690532.

How to translate words "Figure" and "Table" in bookdown::html_document2 documents?

In bookdown projects, it is possible to translate automatically generated words, such as "Table" or "Figure" by changing settings in the _bookdown.yml file (see https://bookdown.org/yihui/bookdown/internationalization.html). An how can I achieve the same result (translate the words) in bookdown::html_document2 documents?
The contens of my R Markdown document:
---
output:
bookdown::html_document2
---
```{r fig1, fig.cap=CAPTION}
CAPTION = "My plot. "
plot(women)
```
And the figure caption in the rendered document is:
I'd like to have "Fig." instead of "Figure".
You need to add a file _bookdown.yml in the same directory as your .Rmd. It should look like this:
_bookdown.yml
language:
label:
fig: "Fig. "
.Rmd
---
title: your doc
output: bookdown::html_document2
---
# Chapter 1
A reference to Figure \#ref(fig:women).
```{r women, echo=FALSE, fig.cap="CAPTION"}
plot(women)
```

Add an image to Rmarkdown Bookdown output before top level heading

The example below (i.e. saved as a file index.rmd ) has the same code chunk to display an image above and below the top level heading, but the image doesn't appear above the top level heading. This occurs if there is a file _output.yml with only this entry bookdown::gitbook: in the same directory.
That line seems to enforce a table of contents (which I want) and that appears to strip out anything (image or text) before the first top level heading by default (which I don't want) - so can this behaviour be modified?
---
site: bookdown::bookdown_site
---
```{r echo=FALSE, message=FALSE, warning=FALSE}
library(imager)
im <- load.image(system.file('extdata/Leonardo_Birds.jpg',package='imager'))
plot(im, axes=FALSE)
```
# R Markdown
```{r echo=FALSE, message=FALSE, warning=FALSE}
library(imager)
im <- load.image(system.file('extdata/Leonardo_Birds.jpg',package='imager'))
plot(im, axes=FALSE)
```
What follows is workaround to your Options 2 and 3, using Markdown and CSS to style images and HTML+CSS to style text; also, using base64 image (transparent gif) generator as an space separator between elements.
Beware of whitespaces! (at the end of each line - place two white spaces and hit ENTER)
Does one of these approaches/hacks work for you? If not, it would be better to delete the answer, it may be misleading to others.
---
title: |
![](www/image.png){width=300px}|
|:-:|
![](www/image.png){width=300px style="display: block; margin:0 auto"}
![](www/image.png){width=300px height=90px align=left}
![](www/image.png){width=300px height=90px align=center}
![](www/image.png){width=300px height=90px align=right}
![](data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACH5BAEAAAAALAAAAAABAAEAAAICRAEAOw==){width=150px}
R Markdown Title
<center>R Markdown Title</center>
<p style="text-align: right;">R Markdown Title</p>
![](data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACH5BAEAAAAALAAAAAABAAEAAAICRAEAOw==){width=150px}
author: "Author Name"
date: "08/03/2020"
---
Using Markdown table to "style" images |-| (left-aligned), |:-:| (centered) and |-:| (right-aligned) will work well with simple RMarkdown outputs.
I realised that you have an image under # top level heading positioned at the very top of the page - with top:0px. causing image duplication and, possibly, hover problem:
<img src="https://i.imgur.com/GiViTbA.png" style="position:absolute;top:0px;height:100px;" />
replace with:
![](http://stackoverflow.com/favicon.ico){width=50px style="display: block; margin:0 auto;"}
and see what will happen.
---
title: |
![](https://i.imgur.com/GiViTbA.png){width=300px style="display: block; margin:0 auto;"}
![](data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACH5BAEAAAAALAAAAAABAAEAAAICRAEAOw==){width=50px}
R Markdown Title
![](data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACH5BAEAAAAALAAAAAABAAEAAAICRAEAOw==){width=50px}
output:
html_document: default
---
# I'm a top level heading {-}
![](http://stackoverflow.com/favicon.ico){width=50px style="display: block; margin:0 auto;"}
Note, you need to replace the image with a local image if you want to show the image in the rstudio viewer.
The image will be visible in the html file created when you knit, if you open in a browser connected to the internet.
```{r echo=FALSE, message=FALSE, warning=FALSE}
plot(cars)
```
EDIT:
Let's try to find a common ground, A Minimal Book Example, github here.
Adjustments made in index.Rmd:
---
title: |
![](data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACH5BAEAAAAALAAAAAABAAEAAAICRAEAOw==){height=300px}
author: "Author Name"
date: "`r Sys.Date()`"
site: bookdown::bookdown_site
output: bookdown::gitbook
---
# Prerequisites
<img src="https://i.imgur.com/GiViTbA.png" style="position:absolute;top:50px;height:300px;align:center;" />
This is a _sample_ book written in **Markdown**. You can use anything that Pandoc's Markdown supports, e.g., a math equation $a^2 + b^2 = c^2$.
index.Rmd output:
Adjustments made in Chapter: Introduction (01-intro.Rmd):
# Introduction {#intro}
![](data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACH5BAEAAAAALAAAAAABAAEAAAICRAEAOw==){height=240px}
<img src="https://i.imgur.com/GiViTbA.png" style="position:absolute;top:50px;height:300px;align:center;" />
You can label chapter and section titles using `{#label}` after them, e.g., we can reference Chapter \#ref(intro). If you do not manually label them, there will be automatic labels anyway, e.g., Chapter \#ref(methods).
01-intro.Rmd output:
With this solution we are "masking" a top level heading (# Introduction) with .png image, which will appear in the Table of Content as text.
Disadvantage: besides the obvious hack, image width must be at least equal or wider than top level heading title.
Note: 3 options are provided here, and none of them are perfect. The perfect solution may rely on modifications to the bookdown package?
Option 1:
Use includes with before_body like this in your _output.yml file (suggested here):
bookdown::gitbook:
css: assets/style.css
includes:
before_body: assets/big-image.html
after_body: assets/footer.html
Disadvantages:
i) Requires making a html file just to insert an image.
ii) If using a web-based image, won't show in Rstudio viewer.
iii) If using a local image, path can get mixed up and won't show in online web html rendering
iv) Includes image at the top of each chapter of bookdown if using before_body: my_image.html. Alternative option in_header: my_image.html does not seem compatible with the sidebar index.
Option 2
Insert image via yaml in index.rmd, using the solution under Tip 3 Add a Logo in your title/header/footer at this blog post
---
title: |
![](my_image.png)
My title
Disadvantages:
i) When you hover over the image, it displays a copy of the image in a slightly different location (Can this "Hover" behaviour be disabled?)
ii) If using a web-based image, won't show in Rstudio viewer.
iii) If using a local image, path can get mixed up and won't show in online web html rendering
Option 3
The code below borrowed from here (which you can place below the top level heading) presumably goes direct through the knitting process and inserts itself in the final html. The issue is that the image doesn't make room for itself and ends up over the first text. Is there some simple html/css to sort this out?
<img src="https://i.imgur.com/GiViTbA.png" style="position:absolute;top:0px;height:100px;" />
Disadvantages:
i) Image doesn't make room for itself and ends up over the first text. You can get around this with a hack by coding extra space (trial and error) through the yaml title like this:
title: |
.
.
.
.
site: bookdown::bookdown_site
EDIT
This is superseded by Radovan's accepted answer.
This was the best answer, taking option 3 from my previous answer, and combining a code approach to making the relevant space from Radovan's answer.
You will still have problems if you want to include a title in the YAML (I don't need this, as my title is in the image).
Also, on first loading the page, it presents nicely, but image is not seen if you go to the top of the document using the table of contents (the inheader approach used by this bookdown shows a better behaviour, but appears at the top of every chapter, which is not desired).
---
title: |
![](data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACH5BAEAAAAALAAAAAABAAEAAAICRAEAOw==){height=300px}
output:
html_document: default
---
# I'm a top level heading {-}
<img src="https://i.imgur.com/GiViTbA.png" style="position:absolute;top:50px;height:300px;align:center;" />
Note, you need to replace the image with a local image if you want to show the image in the rstudio viewer.
The image will be visible in the html file created when you knit, if you open in a browser connected to the internet.
```{r echo=FALSE, message=FALSE, warning=FALSE}
plot(cars)
```
The problem of hovering the image duplicating the image can be fixed by removing the line below from the css file that is generated at \libs\gitbook-2.6.7\css\style.css
.book .book-header h1 a:hover{color:inherit;text-decoration:none}#media (max-width:1000px){.book .book-header h1{display:none}}
as a result, this code below places the image right above the title:
---
title: |
![class='btn noHover'](images/Stats.png){width=400px style="display: block; margin:0 auto; align:center;" }
<center>GEOG380 Basic Stats with R</center>
---

How to change the font colour used inside the chunks when building a tufte book using bookdown?

I am trying to build a book, with 9 chapters. I am using the bookdown::bookdown_site package for that, which I have included in the YAML header in index.Rmd. But when I knit the book, using bookdown::tufte_book2, the pdf file generate the text inside the chunks with different font colors.
When I try to run each chapter individually, using "tufte_handout", the outcome is as expected. Main text and inside chunk text is monochrome and TimesNewRoman.
In rStudio, before build the book, I have tried in Sweave/Program defaults to use both Latex Engines, "xeLaTex" and "pdfLaTex"
YAML header in index.Rmd
---
title: "Operations Research Using R<br />"
author: "Timothy R. Anderson"
date: "`r Sys.Date()`"
site: bookdown::bookdown_site
monofont: Times New Roman
highlight: monochrome
documentclass: book
bibliography: ["Master4Bookdowns.bib"]
---
YAML header in each individual ChapterX.Rmd file:
---
title: 'Chapter 3: More LP Models'
header-includes:
- \usepackage{longtable}
- \usepackage{caption}
monofont: Times New Roman
output:
tufte::tufte_handout:
citation_package: natbib
latex_engine: xelatex
toc: TRUE
number_sections: true
highlight: monochrome
tufte::tufte_html: default
tufte::tufte_book:
citation_package: natbib
latex_engine: xelatex
highlight: monochrome
---
I expect all document with the same font type and monochrome.
Since bookdown::tufte_book2 is not specified in your main YAML header, I assume you have an _output.yml file that defines the output format. In that case, you have to add highlicht: monochrome there, i.e.:
bookdown::tufte_book2:
highlight: monochrome
[other options]