I have several Rmarkdown (Rmd) files in the same directory, and want to render them into individual pdf files using bookdown::render_book. I normally use knitr::knit for that, but would like to take advantage of the cross-referencing in bookdown. But I would still like to have one Rmd file for each pdf file, and have them live independently in the same directory.
According to section 12.4 of the bookdown book I can use output: bookdown::pdf_document2 in the yaml header to generate a single pdf from an Rmd file. However, bookdown::render_book always combines all Rmd files that it finds in the directory, which is not what I want.
Is there an option in the yaml header or in the bookdown::render_book function where I can tell it to ignore all other Rmd files in the directory?
I know there is an option rmd_files I can specify in the file _bookdown.yaml but I don't know how this would work with multiple Rmd files, and I would also like to avoid having to maintain a separate yml file.