latex - R bookdown - custom title page

Question

How to customize title page using bookdown?

I tried using the following code in the YAML header.

includes:
  in_header: preamble.tex
  before_body: body.tex

The body.tex file was something pretty simple, just for test:

egin{titlepage}
Hello world
end{titlepage}

Answer 1

In the LaTeX template <R-Library>/rmarkdown/rmd/latex/default-1.17.0.2.tex we see

egin{document}
$if(title)$
maketitle
$endif$
$if(abstract)$
egin{abstract}
$abstract$
end{abstract}
$endif$

$for(include-before)$
$include-before$

This means that a titlepage is created using maketitle if a title is defined in the YAML headers. Similar for the abstract. If you remove both these tags from your YAML headers, then the content from the file body.tex will be the first to be processed and you are free to customize your titlepage there.

See the answers to this question for an alternative approach.