pandas.core.groupby.DataFrameGroupBy.rank¶
- DataFrameGroupBy.rank(method='average', ascending=True, na_option='keep', pct=False, axis=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
See also
Series.groupby
Apply a function groupby to a Series.
DataFrame.groupby
Apply a function groupby to each row or column of a DataFrame.