pandas.CategoricalIndex.remove_unused_categories — pandas 0.24.0rc1 documentation (original) (raw)
CategoricalIndex. remove_unused_categories(*args, **kwargs)[source]¶
Removes categories which are not used.
| Parameters: | inplace : boolean (default: False) Whether or not to drop unused categories inplace or return a copy of this categorical with unused categories dropped. |
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| Returns: | cat : Categorical with unused categories dropped or None if inplace. |
See also
rename_categories, reorder_categories, add_categories, remove_categories, set_categories