xorbits.pandas.window.Rolling.skew#

Rolling.skew(*args, **kwargs)[源代码]#

Calculate the rolling unbiased skewness.

参数

numeric_only (bool, default False (Not supported yet)) –

Include only float, int, boolean columns.

1.5.0(pandas) 新版功能.

返回

Return type is the same as the original object with np.float64 dtype.

返回类型

Series or DataFrame

参见

scipy.stats.skew: Third moment of a probability density.
pandas.Series.rolling: Calling rolling with Series data.
pandas.DataFrame.rolling: Calling rolling with DataFrames.
pandas.Series.skew: Aggregating skew for Series.
pandas.DataFrame.skew: Aggregating skew for DataFrame.

提示

A minimum of three periods is required for the rolling calculation.

实际案例

>>> ser = pd.Series([1, 5, 2, 7, 12, 6])  
>>> ser.rolling(3).skew().round(6)  
0         NaN
1         NaN
2    1.293343
3   -0.585583
4    0.000000
5    1.545393
dtype: float64

This docstring was copied from pandas.core.window.rolling.Rolling.