Adding Layers

• Additional geom_*() layers may help as well

ggplot(
  data = penguins,
  mapping = aes(x = flipper_length_mm, y = body_mass_g, color = species)
) +
  geom_point() +
  geom_smooth(method = "lm")

• geom_*() functions available:
  • point (scatterplot)
  • line
  • smooth (curve)
  • histogram / bar or (stat_count) / col
  • boxplot
  • map
  • text / label
  • …