R Add Space Between Panels of ggplot2 Facet Plot (Example Code)

This article illustrates how to increase the spacing between facet groups in a ggplot2 graphic in the R programming language.

Setting up the Example

data(iris)                     # Load 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
my_plot <- ggplot(iris,        # Facet plot with default spacing
                  aes(x = Sepal.Width,
                      y = Sepal.Length,
                      color = Species)) +
  geom_point() +
  facet_wrap(Species ~ .)
my_plot

r graph figure 1 r add space between panels ggplot2 facet plot

Example: Add More Space Between ggplot2 Facet Panels

my_plot +                      # Facet plot with increased spacing
  theme(panel.spacing = unit(25, "mm"))

r graph figure 2 r add space between panels ggplot2 facet plot

Related Tutorials & Further Resources

You may find some additional R tutorials on topics such as graphics in R, ggplot2, and labels in the following list:

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