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[pondering] Should mutate handle sliding window operations? #13

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talegari opened this issue May 19, 2022 · 0 comments
Open

[pondering] Should mutate handle sliding window operations? #13

talegari opened this issue May 19, 2022 · 0 comments
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@grahitr @talegari
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enhancement New feature or request question Further information is requested

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@talegari
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First thoughts:

df.mutate({'rolling_3_sum': (np.sum, 'col_1')}, window = [-1, 1])

-1: start at one index before
1: end at one index after

df.mutate({'rolling_3_sum': lambda x: (x['col_1'] + x['col_2'])/2}, window = [-1, 1])

we should be having the entire dataframe context here.

https://davisvaughan.github.io/slider/
https://dbplyr.tidyverse.org/articles/translation-function.html#window-functions
https://pandas.pydata.org/docs/user_guide/window.html
@talegari talegari added the question Further information is requested label May 19, 2022
@talegari talegari added the enhancement New feature or request label Jun 8, 2022
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