#### 8.2.5.13 categorical.missing ¶

Static Method: `out =` categorical.missing `()` ¶
Static Method: `out =` categorical.missing `(sz)` ¶

  Create an array of missing (undefined) categoricals.

  Creates a categorical array whose elements are all missing (<undefined>).

  This is a convenience alias for categorical.undefined, so you can call it generically. It returns strictly the same results as calling categorical.undefined with the same arguments.

  Returns a categorical array.

  See also: categorical.undefined