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DocsNeeds TriageIssue that has not been reviewed by a pandas team memberIssue that has not been reviewed by a pandas team member
Description
Pandas version checks
- I have checked that the issue still exists on the latest versions of the docs on
main
here
Location of the documentation
https://pandas.pydata.org/docs/dev/reference/groupby.html
Documentation problem
There is no reference for DataFrameGroupBy.ewm()
, even though it exists in API, and Docstring can be greatly improved.
Similar to: #61254
E.g. consider working example:
>>> import pandas as pd
>>> pd.__version__
'2.2.3'
>>> data = {"Class": ["A", "A", "A", "B", "B", "B"],"Value": [10, 20, 30, 40, 50, 60],}
>>> df = pd.DataFrame(data)
>>> df
Class Value
0 A 10
1 A 20
2 A 30
3 B 40
4 B 50
5 B 60
>>> ewm_mean = (df.groupby("Class").ewm(span=2).mean().reset_index(drop=True))
>>> ewm_mean
Value
0 10.000000
1 17.500000
2 26.153846
3 40.000000
4 47.500000
5 56.153846
Suggested fix for documentation
Include reference of DataFrameGroupBy.ewm and SeriesGroupBy.ewm, like for DataFrameGroupBy.rolling
and SeriesGroupBy.rolling
Improve groupby.ewm()
function Docstring
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DocsNeeds TriageIssue that has not been reviewed by a pandas team memberIssue that has not been reviewed by a pandas team member