How to capture multiple grid graphics call into a single figure?

[bryanhanson]

Description

What is the proper way to capture multiple calls to the grid graphics package in R? The following R chunk:

#| echo: false
#| label: fig-1
#| fig-keep: high
library("grid")
grid.circle(r = unit(25, "mm"))
grid.circle(r = unit(50, "mm"), gp = gpar(col = "red"))

produces a single red circle. If I set fig-keep: all I get two plots, one for each circle. If I leave off fig-keep I get the last plot.

What's the proper way to capture multiple calls to grid primitives and have them all put into the same figure (which is how it works from the console)?

I'm using the Quarto main branch sync'd up tonight. Output of Quarto check:

Quarto 99.9.9
[✓] Checking versions of quarto binary dependencies...
      Pandoc version 3.1.8: OK
      Dart Sass version 1.55.0: OK
      Deno version 1.33.4: OK
[✓] Checking versions of quarto dependencies......OK
[✓] Checking Quarto installation......OK
      Version: 99.9.9
      Path: /Users/bryanh/Documents/Professional/Research/R_Pkgs/quarto-cli/package/dist/bin

[✓] Checking tools....................OK
      TinyTeX: v2023.07.08
      Chromium: (not installed)

[✓] Checking LaTeX....................OK
      Using: TinyTex
      Path: /Users/bryanh/Library/TinyTeX/bin/universal-darwin
      Version: 2023

[✓] Checking basic markdown render....OK

[✓] Checking Python 3 installation....OK
      Version: 3.9.6
      Path: /Applications/Xcode.app/Contents/Developer/usr/bin/python3
      Jupyter: (None)

      Jupyter is not available in this Python installation.
      Install with python3 -m pip install jupyter

[✓] Checking R installation...........OK
      Version: 4.3.1
      Path: /Library/Frameworks/R.framework/Resources
      LibPaths:
        - /Library/Frameworks/R.framework/Versions/4.3-arm64/Resources/library
      knitr: 1.43
      rmarkdown: 2.24

[✓] Checking Knitr engine render......OK

[mcanouil]

I am afraid this is an R question not a Quarto (or knitr) related question.
See the grid package documentation in particular everything related to "viewport".

[bryanhanson]

Yeah, my bad. Have to draw the smaller one after the larger one. I know this, brain is apparently malfunctioning. Thanks.