pandas.core.window.Expanding.min

Expanding.min(*args, **kwargs) [source]

Calculate the expanding minimum.

Parameters:	**kwargs Under Review.
Returns:	Series or DataFrame Returned object type is determined by the caller of the expanding calculation.

See also

Series.expanding

Calling object with a Series.

DataFrame.expanding

Calling object with a DataFrame.

Series.min

Similar method for Series.

DataFrame.min

Similar method for DataFrame.

Examples

Performing a rolling minimum with a window size of 3.

>>> s = pd.Series([4, 3, 5, 2, 6])
>>> s.rolling(3).min()
0    NaN
1    NaN
2    3.0
3    2.0
4    2.0
dtype: float64