pandas.core.groupby.DataFrameGroupBy.rank

DataFrameGroupBy.rank(self, method='average', ascending=True, na_option='keep', pct=False, axis=0)

Provide the rank of values within each group.

Parameters:

method : {‘average’, ‘min’, ‘max’, ‘first’, ‘dense’}, default ‘average’

• average: average rank of group
• min: lowest rank in group
• max: highest rank in group
• first: ranks assigned in order they appear in the array
• dense: like ‘min’, but rank always increases by 1 between groups

ascending : boolean, default True

False for ranks by high (1) to low (N)

na_option : {‘keep’, ‘top’, ‘bottom’}, default ‘keep’

• keep: leave NA values where they are
• top: smallest rank if ascending
• bottom: smallest rank if descending

pct : boolean, default False

Compute percentage rank of data within each group

axis : int, default 0

The axis of the object over which to compute the rank.

Returns:

DataFrame with ranking of values within each group

See also

Series.groupby

DataFrame.groupby