From R for Data Science
Exercises 2.6.1
1-Run the following lines of code. Which of the two plots is saved as mpg-plot.png? Why?
ggplot(mpg, aes(x = class)) +
geom_bar()
ggplot(mpg, aes(x = cty, y = hwy)) +
geom_point()
ggsave("mpg-plot.png")
The second plot is saved because it has ggsave immediately after it.
2-What do you need to change in the code above to save the plot as a PDF instead of a PNG? How could you find out what types of image files would work in ggsave()?
change
ggsave("mpg-lot.png")
to
ggsave("mpg-lot.pdf")