pandas.core.groupby.DataFrameGroupBy.rank¶

DataFrameGroupBy.rank(self, method: str = 'average', ascending: bool = True, na_option: str = 'keep', pct: bool = False, axis: int = 0)[source]¶

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.

ascendingbool, 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.

pctbool, default False

Compute percentage rank of data within each group.

axisint, default 0

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

Returns

DataFrame with ranking of values within each group