Plot Shaded Area between vertical lines in R
Last Updated :
21 Aug, 2021
Plotting a shaded area between vertical lines means to put a vertical rectangle on a different color plot as compared to the rest of the plot area. We create this rectangle depending on the conditional values of the x-axis and represent the pivot area on the basis of characteristics of the data. This can be obtained using R and is described how in his article.
Function used
- geom_rect() function is used to draw a rectangle
Syntax:
geom_rect(xmin, xmax, ymin, ymax, size, linetype, color, fill, alpha)
- geom_vline() draws a vertical line at a specified position
Syntax:
geom_vline(xintercept, size, linetype, color, alpha)
Approach 1:
- Create frame
- Create plot
- Now draw a rectangle to represent two vertical lines- first we will draw a hollow rectangle
- Now add required color using fill parameter
Program 1: Draw two vertical files
R
x<- rpois (10,5)
y<- rpois (10,7)
df<- data.frame (x,y)
library (ggplot2)
ggplot (df, aes (x,y))+
geom_rect ( aes (xmin=2,xmax=3,ymin=0,ymax= Inf ),color= "black" ,alpha=0)
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Output:
Program 2: Fill color between lines
R
x<- rpois (10,5)
y<- rpois (10,7)
df<- data.frame (x,y)
library (ggplot2)
ggplot (df, aes (x,y))+
geom_rect ( aes (xmin=2,xmax=3,ymin=0,ymax= Inf ),color= "black" ,alpha=0)
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Output:
Approach 2:
- Create frame
- Draw two vertical lines
- Fill color between them using a rectangle
Program 1: Drawing two lines
R
x<- rpois (10,5)
y<- rpois (10,7)
df<- data.frame (x,y)
library (ggplot2)
ggplot (df, aes (x,y))+
geom_vline (xintercept=2,color= "black" )+
geom_vline (xintercept=3,color= "black" )
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Output:
Program 2: Fill color between these lines
R
x<- rpois (10,5)
y<- rpois (10,7)
df<- data.frame (x,y)
library (ggplot2)
ggplot (df, aes (x,y))+
geom_vline (xintercept=2,color= "black" )+
geom_vline (xintercept=3,color= "black" )+
geom_rect ( aes (xmin=2,xmax=3,ymin=- Inf ,ymax= Inf ),fill= "red" )
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Output:
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