3.4 Line chart: geom_line()

• A geom that connects points from left to right.
  • linetype is a useful parameter.
  • Checkout the different linetypes here.
  • Also here ?linetype

ggplot(economics, aes(x = date, y = unemploy)) +
  geom_line()

• What’s up with geom_path()?
  • Connects points as they appear in order of the data
  • Answer to exercise 2.

ggplot(df, aes(c, y)) +
  geom_path()

ggplot(economics, aes(unemploy / pop, psavert)) +
  geom_path()