polars rolling for dataframe
Rolling calculation for a series.
Signature
> polars rolling {flags} (type) (window)
Parameters
-
type: Rolling operation. -
window: Window size for rolling.
Input/output types:
| input | output |
|---|---|
| polars_dataframe | polars_dataframe |
| polars_lazyframe | polars_lazyframe |
Examples
Rolling sum for a series
> [1 2 3 4 5] | polars into-df | polars rolling sum 2 | polars drop-nulls ╭───┬───────────────╮ │ # │ 0_rolling_sum │ ├───┼───────────────┤ │ 0 │ 3 │ │ 1 │ 5 │ │ 2 │ 7 │ │ 3 │ 9 │ ╰───┴───────────────╯
Rolling max for a series
> [1 2 3 4 5] | polars into-df | polars rolling max 2 | polars drop-nulls ╭───┬───────────────╮ │ # │ 0_rolling_max │ ├───┼───────────────┤ │ 0 │ 2 │ │ 1 │ 3 │ │ 2 │ 4 │ │ 3 │ 5 │ ╰───┴───────────────╯
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https://www.nushell.sh/commands/docs/polars_rolling.html
