Fix R Error – stat_count Must not be Used with a Y Aesthetic (2 Examples)

In this article you’ll learn how to fix the error message “stat_count() must not be used with a y aesthetic.” in R.

Preparing the Examples

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 & load ggplot2
library("ggplot2")

Example 1: Replicating the Error: stat_count() must not be used with a y aesthetic.

ggplot(iris,               # Trying to draw ggplot2 barchart
       aes(x = Species,
           y = Petal.Length)) +
  geom_bar()
# Error: stat_count() must not be used with a y aesthetic.

Example 2: ggplot2 Barplot Using stat = “identity” Argument in geom_bar

ggplot(iris,               # Properly drawing ggplot2 barchart
       aes(x = Species,
           y = Petal.Length)) +
  geom_bar(stat = "identity")

r graph figure 1 fix r error stat_count must not be used y aesthetic

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