When saving a ggplot as pdf the french apostrophe is turned into ...
While, saving as png behaves as expected preserving the apostrophe.
See images for examples of the output.
I am exporting an rmd file to pdf through latex, and the ggplot figures are saved as pdf.
How can I export to pdf and preserve the apostrophe in the titles?
I can't be certain without seeing your code, but switching to the cairo_pdf output device will probably resolve this.
The rmarkdown example file below shows PDF output with the pdf device (which is the default) and the cairo_pdf device. I've used the curly single apostrophe (unicode character \u2019), which I think is the character you're trying to render.
In the rmarkdown file, I've set a separate output device in each code chunk. However, you can set the output device once for the entire document by running the following in the first code chunk:
knitr::opts_chunk$set(dev="cairo_pdf")
---
output: pdf_document
---
```{r include=FALSE}
knitr::opts_chunk$set(warning=FALSE, message=FALSE)
library(tidyverse)
```
```{r, fig.height=2, dev="pdf"}
ggplot(mtcars, aes(mpg, hp)) + geom_point() +
labs(title = "C\u2019est le titre") +
theme_bw(base_size=15)
```
```{r, fig.height=2, dev="cairo_pdf"}
ggplot(mtcars, aes(mpg, hp)) + geom_point() +
labs(title = "C\u2019est le titre") +
theme_bw(base_size=15)
```
