pandas.core.groupby.GroupBy.rank

GroupBy.rank(self, 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

ascendingboolean, 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

pctboolean, 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
DataFrame.groupby
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