5.1 Get the data
We can save a
ggplot() object into a variable (we usually call it
p but it can be any name).
This then appears in the Environment tab.
To plot it it needs to be recalled on a separate line to get drawn (Figure 5.1).
Saving a plot into a variable allows us to modify it later (e.g.,
p + theme_bw()).
library(gapminder) library(tidyverse) p0 <- gapminder %>% filter(year == 2007) %>% ggplot(aes(y = lifeExp, x = gdpPercap, colour = continent)) + geom_point(alpha = 0.3) + theme_bw() + geom_smooth(method = "lm", se = FALSE) + scale_colour_brewer(palette = "Set1") p0