pyspark.pandas.Series.argmax

Series.argmax(axis: Union[int, str] = None, skipna: bool = True) → int

Return int position of the largest value in the Series.

If the maximum is achieved in multiple locations, the first row position is returned.

Parameters

axisNone

Dummy argument for consistency with Series.

skipnabool, default True

Exclude NA/null values.

Returns

int

Row position of the maximum value.

Examples

Consider dataset containing cereal calories

>>> s = ps.Series({'Corn Flakes': 100.0, 'Almond Delight': 110.0, 'Unknown': np.nan,
...                'Cinnamon Toast Crunch': 120.0, 'Cocoa Puff': 110.0})
>>> s
Corn Flakes              100.0
Almond Delight           110.0
Unknown                    NaN
Cinnamon Toast Crunch    120.0
Cocoa Puff               110.0
dtype: float64

>>> s.argmax()
3

>>> s.argmax(skipna=False)
-1

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