Vector-based plots possible in HTML output?

[ramiromagno]

When exporting to HTML format, I expected the R code chunk option #| fig-format: svg to make my plots SVG based instead of PNG but it does not seem to be happening. My intention is to have vector based plots in a website --- it would look nicer.

[mcanouil]

It seems fig-format: svg does not work as a cell option.

• This will produce a SVG figure.

  ---
  title: "Title"
  format: html
  fig-format: svg
  ---
  
  ## Quarto
  
  ```{r}
  library(ggplot2)
  ggplot()
  ```
  

• This won't (likely a bug):

  ---
  title: "Title"
  format: html
  ---
  
  ## Quarto
  
  ```{r}
  #| fig-format: svg
  library(ggplot2)
  ggplot()
  ```
  

[ramiromagno]

Thanks for the quick reply! Indeed using fig-format as a global option in the YAML header works (that works for me, for now).

[mcanouil]

I'll let the Quarto's dev determine if it's intended or indeed a bug (otherwise it's definitely a feature request of mine to have access to this option locally).

[alonsoC1s]

I'm using Julia as the language and tried using fig-format: pdf, but just can't seem to get high quality figures with Julia. No issue with any other language

[jjallaire]

It's technically possible for us to set that per cell for Knitr however NOT for Jupyter (which is probably why we didn't implement it for Knitr). Note that you can use the dev: svg cell option with Knitr to do this now.

[mcanouil]

How does fig-format work with dev?
Does it set the device for all engine thus it overwrites dev globally when knitr engine is used?
(Mostly curious)

[jjallaire]

It sets the default knitr chunk option (which can then be overridden per chunk)

…

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