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How to create a wide vertical line using ggplot2 with different color in R?
To create a vertical line using ggplot2, we can use geom_vline function of ggplot2 package and if we want to have a wide vertical line with different color then lwd and colour argument will be used. The lwd argument will increase the width of the line and obviously colour argument will change the color.
Check out the below given example to understand how it works.
Example
Following snippet creates a sample data frame −
x<-rnorm(20) y<-rnorm(20) df<-data.frame(x,y) df
The following dataframe is created −
x y 1 1.35002649 1.30387113 2 1.03471773 -0.34014609 3 1.18443924 -0.74579071 4 -0.88285300 -0.06256158 5 0.64281609 0.12690947 6 -0.29592691 0.52991361 7 -0.02380484 -1.56435084 8 0.42122270 0.90217653 9 1.80724368 -0.25452147 10 0.37268981 0.03689309 11 1.54166527 -0.84113791 12 -0.62766477 0.93255809 13 -1.32431288 -0.72187512 14 -0.03774817 1.13166647 15 1.41402735 -0.24267547 16 2.16421759 -0.18939033 17 0.53090455 -0.84479543 18 0.57897106 0.32036809 19 0.76414767 0.16915787 20 0.48237580 -2.16234466
To load ggplot2 package and create point chart between x and y with wide vertical line at X=0.5 in blue color, add the following code to the above snippet −
library(ggplot2) ggplot(df,aes(x,y))+geom_point()+geom_vline(xintercept=0.5,lwd=2,colour="blue")
Output
If you execute all the above given snippets as a single program, it generates the following output: −
Now, to create point chart between x and y with wide vertical line at X=0.5 in red color, add the following code to the above snippet −
ggplot(df,aes(x,y))+geom_point()+geom_vline(xintercept=0.5,lwd=5,colour="red")
Output
If you execute all the above given snippets as a single program, it generates the following output: −
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