ggplot2：更改CI的显示方式，与“ mean_cl_boot”中的均值无关

Question

Using stat_summary(fun.data = "mean_cl_boot") I want to make the line of the CI thicker, but keep the point (mean) small to keep small CIs visible.
Changing the size parameter affects the point and the line simultaneously.

Minimal example from the doc:

d <- ggplot(mtcars, aes(cyl, mpg)) + geom_point()
d + stat_summary(fun.data = "mean_cl_boot", colour = "red", size = 2)

Answer 1

You have to specify another geom and add the stat_summary twice

d + stat_summary(fun.data = "mean_cl_boot", colour = "red", 
                 size = 2, geom = "linerange") + 
    stat_summary(fun.data = "mean_cl_boot", colour = "blue", 
                 size = 1.8, geom = "point", shape = 4)