BPt.Dataset.reorder_levels

Dataset.reorder_levels(order, axis=0)

Rearrange index levels using input order. May not drop or duplicate levels.

Parameters

orderlist of int or list of str

List representing new level order. Reference level by number (position) or by key (label).

axis{0 or ‘index’, 1 or ‘columns’}, default 0

Where to reorder levels.

Returns

DataFrame

Examples

>>> data = {
...     "class": ["Mammals", "Mammals", "Reptiles"],
...     "diet": ["Omnivore", "Carnivore", "Carnivore"],
...     "species": ["Humans", "Dogs", "Snakes"],
... }
>>> df = pd.DataFrame(data, columns=["class", "diet", "species"])
>>> df = df.set_index(["class", "diet"])
>>> df
                                  species
class      diet
Mammals    Omnivore                Humans
           Carnivore                 Dogs
Reptiles   Carnivore               Snakes

Let’s reorder the levels of the index:

>>> df.reorder_levels(["diet", "class"])
                                  species
diet      class
Omnivore  Mammals                  Humans
Carnivore Mammals                    Dogs
          Reptiles                 Snakes