highlights-of-knitr-package-past.md

talk_id	talk_slug	talk_type	talk_tags	session_slug	talk_title	talk_title_short	talk_materials_url	speakers
22181	highlights-of-knitr-package-past	regular	communication programming	rmarkdown-quarto	Highlights of the knitr package from the past two years	Highlights of the knitr package from the past two years		name affiliation url username photo bio Yihui Xie RStudio, PBC webpage twitter github linkedin affiliation https://yihui.org https://twitter.com/xieyihui https://github.com/yihui yihui_xie.1v84pjlj /assets/img/2022Conf/_talks/22181_yihui-xie.png Yihui Xie is a software engineer at RStudio. He earned his PhD from the Department of Statistics, Iowa State University. He has authored and co-authored several R packages, such as knitr, rmarkdown, bookdown, blogdown, and xaringan. He has published a number of books, including “Dynamic Documents with R and knitr”, “bookdown: Authoring Books and Technical Documents with R Markdown”, “blogdown: Creating Websites with R Markdown”, “R Markdown: The Definitive Guide”, and “R Markdown Cookbook.”

In this talk, I will highlight a few selected new features of the knitr package introduced in the past two years including: 1) the new way to write chunk options as "#|" comments in the chunk body; 2) new ways to reuse both chunk body and chunk options from another code chunk; 3) a few useful new engines, namely comment (comment out arbitrary content), verbatim (write arbitrary verbatim content), embed (embed external files and display their content verbatim), and exec (execute an arbitrary command); and 4) a few new chunk options such as file (to include external files as the chunk body) and lang. Hopefully these new features can help both knitr users and developers make better use of knitr.