polars arg-sort for dataframe
Returns indexes for a sorted series.
This command requires a plugin
The polars arg-sort command resides in the polars plugin. To use this command, you must install and register nu_plugin_polars. See the Plugins chapter in the book for more information.
Signature
> polars arg-sort {flags}
Flags
--reverse, -r: reverse order--nulls-last, -n: nulls ordered last--limit, -l {int}: Limit a sort output, this is for optimization purposes and might be ignored.--maintain-order, -m: maintain order on sorted items
Input/output types:
| input | output |
|---|---|
| polars_dataframe | polars_dataframe |
| polars_lazyframe | polars_lazyframe |
Examples
Returns indexes for a sorted series
> [1 2 2 3 3] | polars into-df | polars arg-sort
╭───┬──────────╮
│ # │ arg_sort │
├───┼──────────┤
│ 0 │ 0 │
│ 1 │ 1 │
│ 2 │ 2 │
│ 3 │ 3 │
│ 4 │ 4 │
╰───┴──────────╯Returns indexes for a sorted series
> [1 2 2 3 3] | polars into-df | polars arg-sort --reverse
╭───┬──────────╮
│ # │ arg_sort │
├───┼──────────┤
│ 0 │ 3 │
│ 1 │ 4 │
│ 2 │ 1 │
│ 3 │ 2 │
│ 4 │ 0 │
╰───┴──────────╯Returns indexes for a sorted series and applying a limit
> [1 2 2 3 3] | polars into-df | polars arg-sort --limit 2
╭───┬──────────╮
│ # │ arg_sort │
├───┼──────────┤
│ 0 │ 0 │
│ 1 │ 1 │
╰───┴──────────╯