https://nanx.me/tags/knitr/ Recent content in knitr on Nan Xiao | 肖楠 Hugo -- gohugo.io en Tue, 06 Jun 2023 20:30:00 +0000 https://nanx.me/blog/post/knitr-chunk-option-error/ Tue, 06 Jun 2023 20:30:00 +0000 https://nanx.me/blog/post/knitr-chunk-option-error/ Rubber duck debugging. Photo by Timothy Dykes. If Google leads you here, you probably assigned a character value to a knitr chunk option such as fig.width or fig.height that only accepts numeric values, and your are trying to render that R Markdown or Quarto document. The exact error message you encountered looks like this: Error in `options[[sprintf("fig.%s", i)]] * options$dpi`: ! non-numeric argument to binary operator Backtrace: 1. rmarkdown::render("example.Rmd", encoding = "UTF-8") 2.