pandas.core.resample.Resampler.transform

final Resampler.transform(arg, *args, **kwargs)

Call function producing a like-indexed Series on each group.

Return a Series with the transformed values.

Parameters:

argfunction

To apply to each group. Should return a Series with the same index.

Returns:

Series

Examples

>>> s = pd.Series([1, 2], index=pd.date_range("20180101", periods=2, freq="1h"))
>>> s
2018-01-01 00:00:00    1
2018-01-01 01:00:00    2
Freq: h, dtype: int64

>>> resampled = s.resample("15min")
>>> resampled.transform(lambda x: (x - x.mean()) / x.std())
2018-01-01 00:00:00   NaN
2018-01-01 01:00:00   NaN
Freq: h, dtype: float64