Syntax error How to create horizontal line in xyplot in R?

How to create horizontal line in xyplot in R?

To create horizontal line in xyplot, we can use abline function.

For Example, if we have a data frame called df that contains two columns say X and Y and we want to create a scatterplot between X and Y using xyplot with a horizontal line at Y = 2 then we can use the command given below −

xyplot(Y~X,df,abline=c(h=2))

Example

Following snippet creates a sample data frame −

x<-rpois(20,2)
y<-rpois(20,5)
df<-data.frame(x,y)
df

The following dataframe is created

  x y
1  5 4
2  3 5
3  2 8
4  2 5
5  1 7
6  1 7
7  2 5
8  1 5
9  3 4
10 2 2
11 0 5
12 1 4
13 1 6
14 6 9
15 0 4
16 2 7
17 0 7
18 2 2
19 1 7
20 2 5

To load lattice package and create xyplot for x and y stored in df on the above created data frame, add the following code to the above snippet −

x<-rpois(20,2)
y<-rpois(20,5)
df<-data.frame(x,y)
library(lattice)
xyplot(y~x,df)

Output

If you execute all the above given snippets as a single program, it generates the following Output −

To create xyplot for x and y stored in df with horizontal at Y = 5 on the above created data frame, add the following code to the above snippet −

x<-rpois(20,2)
y<-rpois(20,5)
df<-data.frame(x,y)
library(lattice)
xyplot(y~x,df,abline=c(h=5))

Output

If you execute all the above given snippets as a single program, it generates the following Output −

Updated on: 2021-11-02T11:03:24+05:30

737 Views

Kickstart Your Career

Get certified by completing the course

Get Started
Advertisements