pandas.core.window.Rolling.count

Rolling.count(self)

The rolling count of any non-NaN observations inside the window.

Returns:

Series or DataFrame

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

See also

Series.rolling

Calling object with Series data.

DataFrame.rolling

Calling object with DataFrames.

DataFrame.count

Count of the full DataFrame.

Examples

>>> s = pd.Series([2, 3, np.nan, 10])
>>> s.rolling(2).count()
0    1.0
1    2.0
2    1.0
3    1.0
dtype: float64
>>> s.rolling(3).count()
0    1.0
1    2.0
2    2.0
3    2.0
dtype: float64
>>> s.rolling(4).count()
0    1.0
1    2.0
2    2.0
3    3.0
dtype: float64