I was adding other annotations to a plot, and wanted to add reference lines. I was in the mindset of annotate()ing thigs, so I tried to use it with "hline" and "vline", but discovered that nothing happened. For example:
library(ggplot2)
p <- ggplot(data.frame(x = 1, y = 1), aes(x, y)) + geom_point()
p +
annotate("hline", yintercept = 0) +
annotate("vline", xintercept = 0)
What I expected:
p +
annotate("segment", x = -Inf, xend = Inf, y = 0, yend = 0) +
annotate("segment", x = 0, xend = 0, y = -Inf, yend = Inf)
I realize the “solution” here is to use the geoms directly with fixed values:
p +
geom_hline(yintercept = 0) +
geom_vline(xintercept = 0)
But annotate() not working seems like an unexpected inconsistency.
I was adding other annotations to a plot, and wanted to add reference lines. I was in the mindset of
annotate()ing thigs, so I tried to use it with"hline"and"vline", but discovered that nothing happened. For example:What I expected:
I realize the “solution” here is to use the geoms directly with fixed values:
But
annotate()not working seems like an unexpected inconsistency.