I am trying to build a bar and line graphs on the same plot but with the different y-axis. The y1 axis has limits 0 to 100 and y2 axis has limits from 4 to 1 (reversed). Hence, I am adding secondary ...
ggplot(data = mpg, aes(x = cty, y = hwy)) # this plot is empty because we haven't provided any geom's mpg ggplot(data = mpg, aes(x = cty, y = hwy), geom_point ...