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How to represent the legend in a plot created by using plot function with colored straight lines or stars in R?
A legend helps us to differentiate between the type of values or any another division of values in a data set. These legends can be represented in many ways and two of these ways are straight lines and stars. To represent the legend in a plot created by using plot function with colored straight lines or stars, we need to correct lty and pch arguments.
Example
Consider the below vectors −
set.seed(199) x<-rnorm(10,2,1) y<-rnorm(10,2,0.04)
Creating the plot between x and y with colored lines legend values −
plot(x,y) legend("bottomright",legend=c("Above 2","Between 1.95 and 2","Below 1.95"), + lwd=2,cex=0.75,col=c("black","blue","red"),lty=c(1,1,1))Output
Creating the plot between x and y with colored stars legend values −
plot(x,y) legend("bottomright",legend=c("Above 2","Between 1.95 and 2","Below 1.95"), + lwd=2,cex=0.75,col=c("black","blue","red"),lty=c(NA,NA,NA),pch=c(8,8,8))Output
Updated on 08-Oct-2020 14:48:44
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