dask.dataframe.rolling.Rolling.count
dask.dataframe.rolling.Rolling.count¶
- Rolling.count()[source]¶
Calculate the rolling count of non NaN observations.
This docstring was copied from pandas.core.window.rolling.Rolling.count.
Some inconsistencies with the Dask version may exist.
- Returns
- Series or DataFrame
Return type is the same as the original object with
np.float64
dtype.
See also
pandas.Series.rolling
Calling rolling with Series data.
pandas.DataFrame.rolling
Calling rolling with DataFrames.
pandas.Series.count
Aggregating count for Series.
pandas.DataFrame.count
Aggregating count for 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