pandas.core.resample.Resampler.size

final Resampler.size()

Compute group sizes.

Returns:

Series

Number of rows in each group.

See also

Series.groupby

Apply a function groupby to a Series.

DataFrame.groupby

Apply a function groupby to each row or column of a DataFrame.

Examples

>>> ser = pd.Series(
...     [1, 2, 3],
...     index=pd.DatetimeIndex(["2023-01-01", "2023-01-15", "2023-02-01"]),
... )
>>> ser
2023-01-01    1
2023-01-15    2
2023-02-01    3
dtype: int64
>>> ser.resample("MS").size()
2023-01-01    2
2023-02-01    1
Freq: MS, dtype: int64