Based on https://github.com/quarto-dev/quarto-cli/issues/722 it seems to me that in pdf format the plot should not be rendered in svg.
If I make graphics with `Gadfly`, here the output is svg, and I receive the following error:
```
compilation failed- error
LaTeX Error: Cannot determine size of graphic in ex_files/figure-pdf/fig-parametric-output-1.svg (no BoundingBox).

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.210 ...s/figure-pdf/fig-parametric-output-1.svg}

```
`ex.qmd` is my file, and the has the following structure:
````
---
title: "Plots Demo"
author: "Norah Jones"
date: "5/22/2021"
format: pdf
jupyter: julia-1.7
---

## Parametric Plots

Plot function pair (x(u), y(u)). 
See @fig-parametric for an example.

```{julia}
#| label: fig-parametric
#| fig-cap: "Parametric Plots"
using Gadfly

p = plot()
push!(p, layer(x=[2,4], y=[2,4], size=[1.4142], color=[colorant"gold"]))
push!(p, Coord.cartesian(fixed=true))
```

```` 
2022-05-18T17:22:54Z
AlissonRP
closed
Plots rendered in svg format in Julia
https://github.com/quarto-dev/quarto-cli/issues/925