R ggplot2 Error: Must be Data Frame not S3 Object Class Uneval (2 Examples)
In this article, I’ll explain how to handle the ggplot2 error message “data` must be a data frame, or other object coercible by `fortify()`, not an S3 object with class uneval” in the R programming language.
Setting up the Examples
data(iris) # Load iris 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 & load ggplot2 library("ggplot2") |
Example 1: Error Replicating: `data` must be a data frame, or other object coercible by `fortify()`
ggplot(aes(iris, x = Sepal.Width, y = Petal.Length)) + # False specification of data argument geom_point() # Error: `data` must be a data frame, or other object coercible by `fortify()`, not an S3 object with class uneval # Did you accidentally pass `aes()` to the `data` argument? |
Example 2: Error Solving: `data` must be a data frame, or other object coercible by `fortify()`
ggplot(iris, aes(x = Sepal.Width, y = Petal.Length)) + # Correct specification of data argument geom_point() |
