The way to Exchange Legend Labels in ggplot2 (With Examples)

You’ll utility please see syntax to modify the legend labels in ggplot2:

p + scale_fill_discrete(labels=c('label1', 'label2', 'label3', ...))

Please see instance displays utility this syntax in follow.

Instance: Exchange Legend Labels in ggplot2

Assume we form please see grouped boxplot in ggplot2:

library(ggplot2) 

#put together this situation reproducible
eager.seed(1)

#form dataset
information <- information.body(staff=rep(c('A', 'B', 'C'), each and every=50),
                   program=rep(c('low', 'prime'), each and every=25),
                   values=seq(1:150)+pattern(1:100, 150, exchange=TRUE))

#form grouped boxplots
p <- ggplot(information, aes(x=staff, y=values, fill=program)) + 
       geom_boxplot() 

#show grouped boxplots
p

Through default, the legend labels tackle please see values for the fill variable:

On the other hand, assume we’d like to modify the legend labels to:

We will utility please see syntax to take action:

#form grouped boxplots with customized legend labels
p <- ggplot(information, aes(x=staff, y=values, fill=program)) + 
       geom_boxplot() +
       scale_fill_discrete(labels=c('Top Program', 'Low Program'))

#show grouped boxplots
p

The legend now shows the labels that we specified.

Backup Assets

Please see tutorials provide an explanation for carry out alternative regular duties in ggplot2:

The way to Exchange the Legend Identify in ggplot2
The way to Exchange Legend Place in ggplot2
The way to Exchange Legend Measurement in ggplot2
The way to Take away a Legend in ggplot2