pandas.CategoricalIndex

class pandas.CategoricalIndex [source]

Immutable Index implementing an ordered, sliceable set. CategoricalIndex represents a sparsely populated Index with an underlying Categorical.

Parameters:	data : array-like or Categorical, (1-dimensional) categories : optional, array-like categories for the CategoricalIndex ordered : boolean, designating if the categories are ordered copy : bool Make a copy of input ndarray name : object Name to be stored in the index

See also

Categorical, Index

Attributes

codes
categories
ordered

Methods

rename_categories(*args, **kwargs)	Renames categories.
reorder_categories(*args, **kwargs)	Reorders categories as specified in new_categories.
add_categories(*args, **kwargs)	Add new categories.
remove_categories(*args, **kwargs)	Removes the specified categories.
remove_unused_categories(*args, **kwargs)	Removes categories which are not used.
set_categories(*args, **kwargs)	Sets the categories to the specified new_categories.
as_ordered(*args, **kwargs)	Sets the Categorical to be ordered
as_unordered(*args, **kwargs)	Sets the Categorical to be unordered
map(mapper)	Map values using input correspondence (a dict, Series, or function).