Implement missing Expanding and Rolling APIs in Series, Frame, SeriesGroupBy, FrameGroupBy
HyukjinKwon opened this issue · 3 comments
HyukjinKwon commented
See https://github.com/databricks/koalas/blob/master/databricks/koalas/missing/window.py
It mimics the class hierarchy from pandas internally. Ideally, we will be able to share implementation across APIs (like cumsum
).
HyukjinKwon commented
I am starting with Expanding in Series and Frame.
itholic commented
I am starting with Rolling in Series and Frame.
HyukjinKwon commented
Please go ahead!