6.4 Knitr Options

If you are using the Knitr cell execution engine, you can specify default document-level Knitr chunk options in YAML. For example:

---
title:"My Document"
format: html
knitr:
  opts_chunk:
    collapse: true
    comment: "#>"
    R.options:
      knitr.graphics.auto_pdf:true
---

You can additionally specify global Knitr options using opts_knit.

The R.options chunk option is a convenient way to define R options that are set temporarily via options() before the code chunk execution, and immediately restored afterwards.

In the example above, we establish default Knitr chunk options for a single document. You can also add shared knitr options to a project-wide _quarto.yml file or a project-directory scoped _metadata.yml file.

ref: https://quarto.org/docs/computations/execution-options.html#knitr-options

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