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When working on a reproducible research project, I would like to know the name of the Rnw file that is being run to use as an R variable.
This would be analogous to inserting an MSExcel filename in a footer
I am using RStudio Server on Ubuntu.
Thank you.
995
asked Jan 06 '14 18:01
If you are using RStudio, then the “Knit” button (Ctrl+Shift+K) will render the document and display a preview of it.
knitr is an engine for dynamic report generation with R. It is a package in the programming language R that enables integration of R code into LaTeX, LyX, HTML, Markdown, AsciiDoc, and reStructuredText documents. The purpose of knitr is to allow reproducible research in R through the means of literate programming.
What if you want to extract only the R code from your R Markdown report? For this, use the function knitr::purl() . The output from purl() can show no text, all text, or just the chunk options from your . Rmd file depending on the documentation argument.
knitr now has a method for this: current_input()
https://github.com/yihui/knitr/issues/701
124
answered Sep 20 '22 22:09
You can use the following two idioms to fetch the directory and name of the current file in knitr:
knitr:::.knitEnv$input.dir
knitr:::knit_concord$get("infile")
This is independent of RStudio, the knitr package is entirely responsible for this. These are private functions and variables that can change at any time without notice, so if you need something reliable, you might want to file an issue on GitHub.
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