pandas.core.groupby.GroupBy.rank¶
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GroupBy.rank(method='average', ascending=True, na_option='keep', pct=False, axis=0)[source]¶ Provides 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