vline not working as annotation

[elbamos]

Reproducible example:

data.frame(a = rnorm(1000), b = rnorm(1000)) %>%
ggplot(aes(x = a, y = b)) +
geom_point() +
annotate("vline", xintercept = 0)

If you specify x instead of xintercept, it throws an error that its missing xend. If you specify xend, it still throws an error that its missing xend.

[hadley]

Yes, vline is a special geom that doesn't work as annotation. You can just do + geom_vline(xintercept = 0)