Hiding legend title
We will hide the legend title here using the theme() function providing legend.title as an argument. Here, the legend.title is equal to element_blank() function. The element_blank() assigns no space and also draws nothing.
Syntax :
theme( legend.title = element_blank(),…., complete = FALSE, validate = TRUE)
Example: R program to hide legend title
R
# Installing and loading the package library(ggplot2) # Read the dataset data("USArrests") # Plot the data plt <- ggplot(USArrests, aes(Murder, Assault, colour = UrbanPop)) + geom_point() # Hiding legend title plt + theme(legend.title = element_blank()) |
Output :
Working with Legends in R using ggplot2
A legend in a plot helps us to understand which groups belong to each bar, line, or box based on its type, color, etc. We can add a legend box in R using the legend() function. These work as guides. The keys can be determined by scale breaks. In this article, we will be working with legends and associated customization using ggplot2 in R programming language.
Syntax :
legend(x, y = NULL, legend, fill = NULL, col = par(“col”), border = “black”, lty, lwd, pch)
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