tests/testthat/_snaps/aes.md

In ggplot2: Create Elegant Data Visualisations Using the Grammar of Graphics

accessing an undefined variable results in an error

Code
  get_layer_data(p)
Condition
  Error in `geom_point()`:
  ! Problem while computing aesthetics.
  i Error occurred in the 1st layer.
  Caused by error:
  ! object 'foo' not found

aes standardises aesthetic names

Duplicated aesthetics after name standardisation: colour

warn_for_aes_extract_usage() warns for discouraged uses of $ and [[ within aes()

Use of `df$x` is discouraged.
i Use `x` instead.

Use of `df[["x"]]` is discouraged.
i Use `.data[["x"]]` instead.

Use of `df$x` is discouraged.
i Use `x` instead.

warn_for_aes_extract_usage() does not evaluate function calls

Use of `df$x` is discouraged.
i Use `x` instead.

Warnings are issued when plots use discouraged extract usage within aes()

Use of `df$x` is discouraged.
i Use `x` instead.

aes evaluation fails with unknown input

Unknown input: <environment>

Unknown input: <environment>

aes() supports !!! in named arguments (#2675)

formal argument "y" matched by multiple actual arguments

alternative_aes_extract_usage() can inspect the call

Don't know how to get alternative usage for `foo`.

class_mapping() checks its inputs

`x` must be a <list>, not an integer vector.

ggplot2 documentation built on Sept. 11, 2025, 9:10 a.m.