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Setting knitr::opts_knit$set(global.device = TRUE) duplicates plots when rendering #10302

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loreabad6 opened this issue Jul 16, 2024 · 2 comments
Open

Setting knitr::opts_knit$set(global.device = TRUE) duplicates plots when rendering #10302

loreabad6 opened this issue Jul 16, 2024 · 2 comments
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@cderv
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bug Something isn't working knitr third-party Issues involving interaction with a third-party library

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@loreabad6
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Bug description

Setting the knitr option for global device to true results in an unexpected behavior where the initial plot is displayed after each code chunk.

image

Steps to reproduce

---
title: "test"
format: html
embed-resources: true
---

```{r}
knitr::opts_knit$set(global.device = TRUE)
```

First a plot with default parameters:

```{r}
plot(1:10)
```

Now let's change the color:

```{r}
par(col="red")
```

And we plot again:

```{r}
plot(1:10)
```

or

---
title: "test"
format: html
knitr:
  opts_knit:
    global.device: true
embed-resources: true
---

First a plot with default parameters:

```{r}
plot(1:10)
```

Now let's change the color:

```{r}
par(col="red")
```

And we plot again:

```{r}
plot(1:10)
```

Expected behavior

Resulting plots from code chunk render once after their respective chunk.

Actual behavior

Initial plot gets rendered after each code chunk.

Your environment

  • IDE: RStudio 2024.04.2
  • OS: Linux Ubuntu 22.04.4 LTS

Quarto check output

Quarto 1.4.555
[✓] Checking versions of quarto binary dependencies...
      Pandoc version 3.1.11: OK
      Dart Sass version 1.69.5: OK
      Deno version 1.37.2: OK
[✓] Checking versions of quarto dependencies......OK
[✓] Checking Quarto installation......OK
      Version: 1.4.555
      Path: /usr/lib/rstudio-server/bin/quarto/bin

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

[✓] Checking LaTeX....................OK
      Using: Installation From Path
      Path: /usr/local/texlive/bin/linux
      Version: 2024

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

[✓] Checking Python 3 installation....OK
      Version: 3.10.12
      Path: /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: 4.4.1
      Path: /usr/local/lib/R
      LibPaths:
        - /usr/local/lib/R/site-library
        - /usr/local/lib/R/library
      knitr: 1.48
      rmarkdown: 2.27

[✓] Checking Knitr engine render......OK
@loreabad6 loreabad6 added the bug Something isn't working label Jul 16, 2024
@cderv
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cderv commented Jul 16, 2024

This is not Quarto specific. More a knitr behavior . Using knitr::knit() on the file gives 4 plots in the .md document.

I need to look into this as I don't remember the impact of this options.

@cderv cderv added third-party Issues involving interaction with a third-party library knitr labels Jul 16, 2024
@VadimSokolov
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This is expected behavior. It is there so you can modify the same plot across multiple code chunks. What you probably want is opts_knit$set(global.par = TRUE)

@cderv cderv self-assigned this May 6, 2025
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@VadimSokolov @cderv @loreabad6