Seeing Greek letters in RStudio when viewing data.frame

Question

Out of nowhere when I look at my imported csv I see Greek alphabet (as seen in the example image).

• The csv file itself is in Latin, encoding shouldn't be the problem
• In the RStudio options I have English language
• When I copy the text and paste it, its in Latin alphabet again

Answer 1

So the solution was to install "Dejavu Sans" font.