issues: 866826033

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id node_id number title user state locked assignee milestone comments created_at updated_at closed_at author_association active_lock_reason draft pull_request body reactions performed_via_github_app state_reason repo type
866826033 MDU6SXNzdWU4NjY4MjYwMzM= 5215 Add an Cumulative aggregation, similar to Rolling 5635139 closed 0     6 2021-04-24T19:59:49Z 2023-12-08T22:06:53Z 2023-12-08T22:06:53Z MEMBER      

Is your feature request related to a problem? Please describe.

Pandas has a .expanding aggregation, which is basically rolling with a full lookback. I often end up supplying rolling with the length of the dimension, and this is some nice sugar for that.

Describe the solution you'd like Basically the same as pandas — a .expanding method that returns an Expanding class, which implements the same methods as a Rolling class.

Describe alternatives you've considered Some options: – This – Don't add anything, the sugar isn't worth the additional API. – Go full out and write specialized expanding algos — which will be faster since they don't have to keep track of the window. But not that much faster, likely not worth the effort.

 
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   completed 13221727 issue

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