Add cumsum #251
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Add cumsum #251
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dcherian
reviewed
Jul 7, 2023
tests/test_core.py
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| a = np.array([3, 4, 1, 3, 9, 9, 6, 7, 7, 0, 8, 2, 1, 8, 9, 8]) | ||
| b = npg.aggregate(group_idx, a, func="cumsum") | ||
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| bb = groupby_reduce(a, group_idx, func="cumsum", engine="numpy")[0] |
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Let's add a groupby_accumulate(a, group_idx, func="sum", engine="numpy) that only returns a single array.
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I'm not a fan that groupby_reduce and groupby_accumulate wont have the same typing though.
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They are very different operations so they have to be. For e.g. method="map-reduce" isn't applicable. fill_value doesn't make any sense I don't think (an initial value does)
Co-authored-by: Deepak Cherian <[email protected]>
dcherian
reviewed
Jul 10, 2023
Illviljan
commented
Jul 10, 2023
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