pandas.CategoricalIndex.codes

property CategoricalIndex.codes

The category codes of this categorical index.

Codes are an array of integers which are the positions of the actual values in the categories array. There is no setter.

Returns:

ndarray[int]

A non-writable view of the codes array.

See also

Categorical.from_codes

Make a Categorical from codes.

CategoricalIndex

An Index with an underlying Categorical.

Examples

>>> ci = pd.CategoricalIndex(["a", "b", "c", "a", "b", "c"])
>>> ci.codes
array([0, 1, 2, 0, 1, 2], dtype=int8)

>>> ci = pd.CategoricalIndex(["a", "c"], categories=["c", "b", "a"])
>>> ci.codes
array([2, 0], dtype=int8)