Change Point Colors for Different Lines in ggplot2 Graph in R (Example Code)

This tutorial explains how to adjust the point colors for different lines in ggplot2 line and point graph in R programming.

Setting up the Example

data(iris)                       # Loading example data frame
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
ggplot(iris,                     # Graphic without any colors
       aes(x = Sepal.Length,
           y = Petal.Length,
           group = Species)) +
  geom_line() +
  geom_point()

r graph figure 1 change point colors for different lines ggplot2 graph r

Example: Adjusting the Color of Points in a ggplot2 Line & Point Plot by Group

ggplot(iris,                     # Change color of scatterplot points by group
       aes(x = Sepal.Length,
           y = Petal.Length,
           group = Species)) +
  geom_line() +
  geom_point(aes(col = Species))

r graph figure 2 change point colors for different lines ggplot2 graph r

Related Tutorials & Further Resources

Here, you can find some additional resources on topics such as graphics in R, descriptive statistics, ggplot2, and coding errors:

Leave a Reply

Your email address will not be published.

Fill out this field
Fill out this field
Please enter a valid email address.
You need to agree with the terms to proceed

Menu
Top