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]](https://data-hacks.com/wp-content/uploads/2021/01/figure-1-plot-r-change-ggplot2-fill-color-using-scale_brewer-rcolorbrewer.png "Figure 1")
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]](https://data-hacks.com/wp-content/uploads/2021/01/figure-2-plot-r-change-ggplot2-fill-color-using-scale_brewer-rcolorbrewer.png "Figure 2")