Re:Polars
by petre on Tuesday January 09, 2024 @07:22AM
(#38925300)
The docs are okay, but the feature set is lacking compared to pandas, which is understandable since this is at version 0.2. I was exploring if it's possible to use this, but we need diff aggregation which it doesn't have, so it's a no go right now.
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Re:Polars
by cmdlineluser on Tuesday January 09, 2024 @07:48AM
(#38925544)
Do you mean something like `.agg(pl.col("foo").diff())`?
Or is diff aggregation its own thing? (I tried searching for the term, but didn't find much.)
Nevermind, it has it but it's under Computation in polars.Series.diff and I was looking under Aggregation. This is great.
For instance you've got a time series with an odometer value and you want the a delta from the previous sample to compute the every trip.