Can't change fonts in ggplot/geom_text

Question

I can't set my fonts in geom_text. Here is what I tried:

    labels_test<-data.frame(a=c("a","b","c"),b=c(1:3),c=c(3:1))     # works     ggplot () + geom_text(data=labels_test,aes(b,c,label=a),color="blue")     # does not work:      ggplot () + geom_text(data=labels_test,aes(b,c,label=a),color="blue",family="Times")     # error message:  In grid.Call.graphics(L_text, as.graphicsAnnot(x$label), x$x, x$y,:     # Font family not found in Windows font database 

I already imported all fonts as indicated here. Any ideas what is still going wrong?

Answer 1

I would try"

windowsFonts(Times=windowsFont("TT Times New Roman")) 

In doing this your specifying explicitly the Windows Font mapping.