pandas.core.window.Rolling.min

Calculate the rolling minimum.

**kwargs Under Review. :return: Series or DataFrame

Returned object type is determined by the caller of the rolling calculation.

Examples

Calculate the rolling minimum.

import pandas as pd
from numba import njit


@njit
def series_rolling_min():
    series = pd.Series([4, 3, 5, 2, 6])  # Series of 4, 3, 5, 2, 6
    out_series = series.rolling(3).min()

    return out_series  # Expect series of NaN, NaN, 3.0, 2.0, 2.0


print(series_rolling_min())

$ python ./series/rolling/series_rolling_min.py
0    NaN
1    NaN
2    3.0
3    2.0
4    2.0
dtype: float64

Calculate the rolling minimum.

import pandas as pd
from numba import njit


@njit
def df_rolling_min():
    df = pd.DataFrame({'A': [4, 3, 5, 2, 6], 'B': [-4, -3, -5, -2, -6]})
    out_df = df.rolling(3).min()

    # Expect DataFrame of
    # {'A': [NaN, NaN, 3.0, 2.0, 2.0], 'B': [NaN, NaN, -5.0, -5.0, -6.0]}
    return out_df


print(df_rolling_min())

$ python ./dataframe/rolling/dataframe_rolling_min.py
     A    B
0  NaN  NaN
1  NaN  NaN
2  3.0 -5.0
3  2.0 -5.0
4  2.0 -6.0

See also

Series.rolling

Calling object with a Series.

DataFrame.rolling

Calling object with a DataFrame.

Series.min

Similar method for Series.

DataFrame.min

Similar method for DataFrame.