def argmax(self, axis=None):
"""
return a ndarray of the maximum argument indexer
See also
--------
numpy.ndarray.argmax
"""
return nanops.nanargmax(self.values)
def argmax(self, axis=None, skipna=True, *args, **kwargs):
"""
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
----------
axis : {None}
Dummy argument for consistency with Series.
skipna : bool, default True
Exclude NA/null values when showing the result.
*args, **kwargs
Additional arguments and keywords for compatibility with NumPy.
Returns
-------
int
Row position of the maximum values.
See Also
--------
numpy.ndarray.argmax : Equivalent method for numpy arrays.
Series.argmin : Similar method, but returning the minimum.
Series.idxmax : Return index label of the maximum values.
Series.idxmin : Return index label of the minimum values.
Examples
--------
Consider dataset containing cereal calories
>>> s = pd.Series({'Corn Flakes': 100.0, 'Almond Delight': 110.0,
... 'Cinnamon Toast Crunch': 120.0, 'Cocoa Puff': 110.0})
>>> s
Corn Flakes 100.0
Almond Delight 110.0
Cinnamon Toast Crunch 120.0
Cocoa Puff 110.0
dtype: float64
>>> s.argmax()
2
The maximum cereal calories is in the third element,
since series is zero-indexed.
"""
nv.validate_minmax_axis(axis)
nv.validate_argmax_with_skipna(skipna, args, kwargs)
return nanops.nanargmax(self._values, skipna=skipna)
def argmax(self, axis=None, skipna=True):
"""
Return an ndarray of the maximum argument indexer.
Parameters
----------
axis : {None}
Dummy argument for consistency with Series
skipna : bool, default True
See Also
--------
numpy.ndarray.argmax
"""
nv.validate_minmax_axis(axis)
return nanops.nanargmax(self._values, skipna=skipna)
def argmax(self, axis=None, skipna=True):
"""
Return an ndarray of the maximum argument indexer.
Parameters
----------
axis : {None}
Dummy argument for consistency with Series
skipna : bool, default True
See Also
--------
numpy.ndarray.argmax
"""
nv.validate_minmax_axis(axis)
return nanops.nanargmax(self._values, skipna=skipna)
def argmax(self, axis=None, skipna=True, *args, **kwargs):
"""
Return an ndarray of the maximum argument indexer.
Parameters
----------
axis : {None}
Dummy argument for consistency with Series.
skipna : bool, default True
Returns
-------
numpy.ndarray
Indices of the maximum values.
See Also
--------
numpy.ndarray.argmax
"""
nv.validate_minmax_axis(axis)
nv.validate_argmax_with_skipna(skipna, args, kwargs)
return nanops.nanargmax(self._values, skipna=skipna)
def argmax(self, axis=None, skipna: bool = True, *args, **kwargs) -> int:
"""
Return int position of the {value} value in the Series.
If the {op}imum is achieved in multiple locations,
the first row position is returned.
Parameters
----------
axis : {{None}}
Dummy argument for consistency with Series.
skipna : bool, default True
Exclude NA/null values when showing the result.
*args, **kwargs
Additional arguments and keywords for compatibility with NumPy.
Returns
-------
int
Row position of the {op}imum value.
See Also
--------
Series.arg{op} : Return position of the {op}imum value.
Series.arg{oppose} : Return position of the {oppose}imum value.
numpy.ndarray.arg{op} : Equivalent method for numpy arrays.
Series.idxmax : Return index label of the maximum values.
Series.idxmin : Return index label of the minimum values.
Examples
--------
Consider dataset containing cereal calories
>>> s = pd.Series({{'Corn Flakes': 100.0, 'Almond Delight': 110.0,
... 'Cinnamon Toast Crunch': 120.0, 'Cocoa Puff': 110.0}})
>>> s
Corn Flakes 100.0
Almond Delight 110.0
Cinnamon Toast Crunch 120.0
Cocoa Puff 110.0
dtype: float64
>>> s.argmax()
2
>>> s.argmin()
0
The maximum cereal calories is the third element and
the minimum cereal calories is the first element,
since series is zero-indexed.
"""
delegate = self._values
nv.validate_minmax_axis(axis)
skipna = nv.validate_argmax_with_skipna(skipna, args, kwargs)
if isinstance(delegate, ExtensionArray):
if not skipna and delegate.isna().any():
return -1
else:
return delegate.argmax()
else:
return nanops.nanargmax(delegate, skipna=skipna)
