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

fortify.default proves a helpful error with mapping class

`data` must be a <data.frame>, or an object coercible by `fortify()`, or a valid <data.frame>-like object coercible by `as.data.frame()`, not a <ggplot2::mapping> object.
i Did you accidentally pass `aes()` to the `data` argument?

fortify.default can handle healthy data-frame-like objects

Code
  fortify(X)
Condition
  Error in `fortify()`:
  ! `data` must be a <data.frame>, or an object coercible by `fortify()`, or a valid <data.frame>-like object coercible by `as.data.frame()`.
  Caused by error in `check_data_frame_like()`:
  ! `dim(data)` must return an <integer> of length 2.

Code
  fortify(array(1:60, 5:3))
Condition
  Error in `fortify()`:
  ! `data` must be a <data.frame>, or an object coercible by `fortify()`, or a valid <data.frame>-like object coercible by `as.data.frame()`.
  Caused by error in `check_data_frame_like()`:
  ! `dim(data)` must return an <integer> of length 2.

Code
  fortify(cbind(X, Y, Z, deparse.level = 0))
Condition
  Error in `fortify()`:
  ! `data` must be a <data.frame>, or an object coercible by `fortify()`, or a valid <data.frame>-like object coercible by `as.data.frame()`.
  Caused by error in `check_data_frame_like()`:
  ! `colnames(data)` must return a <character> of length `ncol(data)`.

Code
  fortify(object)
Condition
  Error in `fortify()`:
  ! `data` must be a <data.frame>, or an object coercible by `fortify()`, or a valid <data.frame>-like object coercible by `as.data.frame()`.
  Caused by error in `dim.foo()`:
  ! oops!

Code
  fortify(object)
Condition
  Error in `fortify()`:
  ! `data` must be a <data.frame>, or an object coercible by `fortify()`, or a valid <data.frame>-like object coercible by `as.data.frame()`.
  Caused by error in `check_data_frame_like()`:
  ! `dim(data)` must return an <integer> of length 2.

Code
  fortify(object)
Condition
  Error in `fortify()`:
  ! `data` must be a <data.frame>, or an object coercible by `fortify()`, or a valid <data.frame>-like object coercible by `as.data.frame()`.
  Caused by error in `check_data_frame_like()`:
  ! `dim(data)` must return an <integer> of length 2.

Code
  fortify(object)
Condition
  Error in `fortify()`:
  ! `data` must be a <data.frame>, or an object coercible by `fortify()`, or a valid <data.frame>-like object coercible by `as.data.frame()`.
  Caused by error in `check_data_frame_like()`:
  ! `dim(data)` can't have `NA`s or negative values.

Code
  fortify(object)
Condition
  Error in `fortify()`:
  ! `data` must be a <data.frame>, or an object coercible by `fortify()`, or a valid <data.frame>-like object coercible by `as.data.frame()`.
  Caused by error in `check_data_frame_like()`:
  ! `dim(data)` can't have `NA`s or negative values.

Code
  fortify(object)
Condition
  Error in `fortify()`:
  ! `data` must be a <data.frame>, or an object coercible by `fortify()`, or a valid <data.frame>-like object coercible by `as.data.frame()`.
  Caused by error in `dimnames(x)[[2L]]`:
  ! subscript out of bounds

Code
  fortify(object)
Condition
  Error in `fortify()`:
  ! `data` must be a <data.frame>, or an object coercible by `fortify()`, or a valid <data.frame>-like object coercible by `as.data.frame()`.
  Caused by error in `check_data_frame_like()`:
  ! `colnames(data)` must return a <character> of length `ncol(data)`.

Code
  fortify(object)
Condition
  Error in `fortify()`:
  ! `data` must be a <data.frame>, or an object coercible by `fortify()`, or a valid <data.frame>-like object coercible by `as.data.frame()`.
  Caused by error in `check_data_frame_like()`:
  ! `colnames(data)` must return a <character> of length `ncol(data)`.

Code
  fortify(object)
Condition
  Error in `fortify()`:
  ! `data` must be a <data.frame>, or an object coercible by `fortify()`, or a valid <data.frame>-like object coercible by `as.data.frame()`.
  Caused by error in `as.data.frame.foo()`:
  ! oops!

Code
  fortify(object)
Condition
  Error in `fortify()`:
  ! `data` must be a <data.frame>, or an object coercible by `fortify()`, or a valid <data.frame>-like object coercible by `as.data.frame()`.
  Caused by error in `check_data_frame_conversion()`:
  ! `as.data.frame(data)` must return a <data.frame>.

Code
  fortify(object)
Condition
  Error in `fortify()`:
  ! `data` must be a <data.frame>, or an object coercible by `fortify()`, or a valid <data.frame>-like object coercible by `as.data.frame()`.
  Caused by error in `check_data_frame_conversion()`:
  ! `as.data.frame(data)` must preserve dimensions.

Code
  fortify(object)
Condition
  Error in `fortify()`:
  ! `data` must be a <data.frame>, or an object coercible by `fortify()`, or a valid <data.frame>-like object coercible by `as.data.frame()`.
  Caused by error in `check_data_frame_conversion()`:
  ! `as.data.frame(data)` must preserve column names.