Using geom_path from ggplot library

Question

I have 12 variables, M1, M2, ..., M12, for which I compute a certain statistic x.

 df = data.frame(model          


        

Answer 1

You have to use geom_polygon for closed paths:

library(ggplot2)
ggplot(data=df, aes(x=model, y=x, group=1)) + 
  geom_polygon(fill = NA, colour = "black") + 
  coord_polar() + 
  scale_y_continuous(limits=range(levels), breaks=levels, labels=levels) +
  theme(axis.text.y = element_blank(), axis.ticks = element_blank(), 
        axis.title.x = element_blank(), axis.title.y = element_blank())