pandas.core.groupby.DataFrameGroupBy.idxmax

property DataFrameGroupBy.idxmax

Return index of first occurrence of maximum over requested axis.

NA/null values are excluded.

Parameters

axis{0 or ‘index’, 1 or ‘columns’}, default 0

The axis to use. 0 or ‘index’ for row-wise, 1 or ‘columns’ for column-wise.

skipnabool, default True

Exclude NA/null values. If an entire row/column is NA, the result will be NA.

Returns

Series

Indexes of maxima along the specified axis.

Raises

ValueError

• If the row/column is empty

See also

Series.idxmax

Notes

This method is the DataFrame version of ndarray.argmax.

pandas.core.groupby.DataFrameGroupBy.hist pandas.core.groupby.DataFrameGroupBy.idxmin