pandas.CategoricalIndex.as_ordered#

CategoricalIndex.as_ordered()[source]#

Set the Categorical to be ordered.

Returns:
Categorical

Ordered Categorical.

Examples

For pandas.Series:

>>> ser = pd.Series(["a", "b", "c", "a"], dtype="category")
>>> ser.cat.ordered
False
>>> ser = ser.cat.as_ordered()
>>> ser.cat.ordered
True

For pandas.CategoricalIndex:

>>> ci = pd.CategoricalIndex(["a", "b", "c", "a"])
>>> ci.ordered
False
>>> ci = ci.as_ordered()
>>> ci.ordered
True