A typical.bookdown. book contains multiple chapters, and one chapter lives in one R Markdown file, with the filename extension `.Rmd`. Each R Markdown file must start immediately with the chapter title using the first-level heading, e.g., `# Chapter Title`. Bookdown is an R package for authors to write books and long-form articles using R Markdown. Bookdown + exams + webex. First and foremost, the main part of the hack is to realize that any exercises in a.Rmd file can be broken into a list using exams::xexams.Let’s use an example from the book, with the first three exercises of chapter 01. Bookdown is an R package for authors to write books and long-form articles using R Markdown.
5.1 Build the book
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To build all Rmd files into a book, you can call the
render_book()
function in bookdown. Below are the arguments of render_book()
:The most important argument is
output_format
, which can take a character string of the output format (e.g., 'bookdown::gitbook'
). You can leave this argument empty, and the default output format will be the first output format specified in the YAML metadata of the first Rmd file or a separate YAML file _output.yml
, as mentioned in Section 4.4. If you plan to generate multiple output formats for a book, you are recommended to specify all formats in _output.yml
.Once all formats are specified in
_output.yml
, it is easy to write an R or Shell script or Makefile to compile the book. Below is a simple example of using a Shell script to compile a book to HTML (with the GitBook style) and PDF:The Shell script does not work on Windows (not strictly true, though), but hopefully you get the idea.
The argument
...
is passed to the output format function. Arguments clean
and envir
are passed to rmarkdown::render()
, to decide whether to clean up the intermediate files, and specify the environment to evaluate R code, respectively.The output directory of the book can be specified via the
output_dir
argument. By default, the book is generated to the _book
directory. This can also be changed via the output_dir
field in the configuration file _bookdown.yml
, so that you do not have to specify it multiple times for rendering a book to multiple output formats. The new_session
argument has been explained in Section 1.4. When you set preview = TRUE
, only the Rmd files specified in the input
argument are rendered, which can be convenient when previewing a certain chapter, since you do not recompile the whole book, but when publishing a book, this argument should certainly be set to FALSE
.A number of output files will be generated by
render_book()
. Sometimes you may want to clean up the book directory and start all over again, e.g., remove the figure and cache files that were generated automatically from knitr. The function clean_book()
was designed for this purpose. By default, it tells you which output files you can possibly delete. If you have looked at this list of files, and are sure no files were mistakenly identified as output files (you certainly do not want to delete an input file that you created by hand), you can delete all of them using bookdown::clean_book(TRUE)
. Since deleting files is a relatively dangerous operation, we would recommend that you maintain your book through version control tools such as GIT, or a service that supports backup and restoration, so you will not lose certain files forever if you delete them by mistake.A open-source (GPL-3) R package to facilitate writing books and long-form articles/reports with R Markdown. Features include:
- Multiple output formats: HTML, PDF, and ePub.
- Makes it easy to produce books that look visually pleasant.
- Styles include Gitbook (https://www.gitbook.com), Tufte CSS (http://rstudio.github.io/tufte/), and Tufte-LaTeX.
- Extended Markdown syntax to support numbering figures/tables, and cross-references, etc.
- Renders interactive HTML widgets and Shiny apps in books.
- Integrated with the RStudio IDE.
- One-click publishing to https://bookdown.org.
Bookdown Chinese
Full documentation at https://bookdown.org/yihui/bookdown, and see 'Get Started' at https://bookdown.org to know how to get started with writing a book. You are welcome to send us feedback using Github issues.