by Sai gowtham

How to plot two graphs in the same plot in R

Learn, how to plot two graphs in a same plot in R Language.

To plot the two graphs in the same plot, we can use the par() function in R language.

Here is an example:

x <- c(1,2,3,4,5,6,7)
y1 <- c(1,4,9,16,25,36,49)
y2 <- c(1, 5, 12, 21, 34, 51, 72)

plot(x, y1, type="o", col="blue" )
par(new=TRUE)
plot( x, y2, type="o", col="orange" )

Similarly, you can also use the lines() or points() function to add the graph to an existing plot.

x <- c(1,2,3,4,5,6,7)
y1 <- c(1,4,9,16,25,36,49)
y2 <- c(1, 5, 12, 21, 34, 51, 72)

plot(x,y1,type="l",col="blue")

# Adds the second curve to the same plot
lines(x,y2,col="orange")

Using the points() function

x <- c(1,2,3,4,5,6,7)
y1 <- c(1,4,9,16,25,36,49)
y2 <- c(1, 5, 12, 21, 34, 51, 72)

plot(x,y1,type="l",col="blue")
points(x,y2,type="l",col="orange")

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