R Change ggplot2 Fill & Color Using scale_brewer [RColorBrewer] (Example Code)

This tutorial shows how to apply the functions of the RColorBrewer package to modify ggplot2 plot colors in the R programming language.

Preparing the Example

data(iris)                     # Loading example data
head(iris)
#   Sepal.Length Sepal.Width Petal.Length Petal.Width Species
# 1          5.1         3.5          1.4         0.2  setosa
# 2          4.9         3.0          1.4         0.2  setosa
# 3          4.7         3.2          1.3         0.2  setosa
# 4          4.6         3.1          1.5         0.2  setosa
# 5          5.0         3.6          1.4         0.2  setosa
# 6          5.4         3.9          1.7         0.4  setosa
install.packages("ggplot2")    # Install ggplot2 package
library("ggplot2")             # Load ggplot2 package
my_plot <- ggplot(iris,        # Draw ggplot2 scatterplot
                  aes(x = Sepal.Length,
                      y = Petal.Length,
                      fill = Species,
                      col = Species)) +
  geom_point(size = 3,
             shape = 21,
             stroke = 3)
my_plot
# ("RColorBrewer")

r graph figure 1 r change ggplot2 fill color using scale_brewer [rcolorbrewer]

Example: Change Fill & Color of ggplot2 Scatterplot Using scale_fill_brewer & scale_colour_brewer

my_plot +                      # Change fill & color
  scale_fill_brewer(palette = 15, direction = - 1) + 
  scale_colour_brewer(palette = "RdYlBu")

r graph figure 2 r change ggplot2 fill color using scale_brewer [rcolorbrewer]

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