Error in FUN(X[[i]], …) : object not found – ggplot2 geom_path in R (2 Examples)

In this article you’ll learn how to reproduce and debug the “Error in FUN(X[[i]], …) : object not found” in R programming.

Setting up 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 ggplot2 package
library("ggplot2")                          # Load ggplot2
my_plot <- ggplot(iris,                     # Drawing ggplot2 graphic
                  aes(x = Sepal.Length,
                      y = Sepal.Width,
                      col = Species)) +
  geom_point()
my_plot

r graph figure 1 error fun x[[i]] object not found ggplot2 geom_path r

my_path <- data.frame(x = c(5, 7, 6, 7),    # Setting parameters for path
                      y = c(3, 4, 2, 3))
#   x y
# 1 5 3
# 2 7 4
# 3 6 2
# 4 7 3
my_path

Example 1: Replicating the Error in FUN(X[[i]], …) : object not found

my_plot +                                   # inherit.aes is set to TRUE
  geom_path(data = my_path,
            aes(x = x,
                y = y))
# Error in FUN(X[[i]], ...) : object 'Species' not found

Example 2: Solving the Error in FUN(X[[i]], …) : object not found

my_plot +                                   # inherit.aes is set to FALSE
  geom_path(data = my_path,
            aes(x = x,
                y = y),
            inherit.aes = FALSE)

r graph figure 2 error fun x[[i]] object not found ggplot2 geom_path r

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Below, you may find some further resources on topics such as data objects, ggplot2, and coding errors.

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