Create Dotted Vertical Lines in a Plot Using ggplot2 in R

In any plot, the vertical lines are generally used to show the thresholds for something, for example, range of the variable under consideration. The package ggplot2 provides geom_vline function to create vertical lines on a plot and we have linetype argument of this function which can be used to draw dotted vertical lines.

Example

Consider the below data frame −

set.seed(9)
x <-rnorm(100,0.5)
df <-data.frame(x)

Creating histogram of x with dotted vertical lines −

Example

library(ggplot2)
ggplot(df,aes(x))+geom_histogram(bins=15)+geom_vline(xintercept=c(-2,2),linetype="dotted")

Output

Example

ggplot(df,aes(x))+geom_histogram(bins=15)+geom_vline(xintercept=c(-3,3),linetype="dotted")

Output