Text does not show properly in R plot

I was searching for this problem when i found this thread. I too am using RStudio from Anaconda, on Debian 10.0 (buster).

Try

par(family  = "Arial")

or whichever font name before calling plot(). It worked for me. Update > I still had problems with ggplot2 plots not displaying labels, like above. I tried the workaround of using showtext() instead of regular text rendering.

install.packages("showtext")

After it was installed,

library(showtext)

to load the library. Then simply call

showtext_auto()

followed by the ggplot(.....) + ... + etc. function and text was rendered alright within the plot. I did not load specific fonts using font_add(). Maybe because previously 'Arial' was loaded with par()