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Labels with Dollars

20200428

ds %>%
  ggplot(aes(wind_dir_3pm, fill=wind_dir_3pm)) +
  geom_bar() +
  scale_y_continuous(labels=dollar) +
  labs(y="") +
  labs(x=vnames["wind_dir_3pm"], y="") +
  theme(legend.position="none")

The scales package provides numerous formatting options that can be readily utilised for plot labels. The function scales::dollar() is useful for presenting numbers that represent currency, specifying, for example, scale_y_continuous() with labels=dollar. The numbers being plotted here are not currency, but are used for demonstrating the functionality. Notice that comma is also used in the displayed values.