Adding a vline in ggplot2 using time

Question

I am having some problems adding a vertical line to a gplot2 graph.

My example dataframe is listed below.

set.seed(1234)
df <- data.frame(Date=seq         


        

Answer 1

You have to replace as.Date() with as.POSIXct() because you also need time not just date (function as.Date() represents only date part).

g + geom_vline(xintercept=as.numeric(as.POSIXct("2013-02-21 14:00:00")))

You can see the difference by looking on those two cases:

 as.Date("2013-02-21 14:00:00")
[1] "2013-02-21"

 as.POSIXct("2013-02-21 14:00:00")
[1] "2013-02-21 14:00:00 EET"