polars median

For lazyframe.

Median value from columns in a dataframe or creates expression for an aggregation

warning This command requires a plugin The polars median 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.

Command Type

plugin

Signature

> polars median {flags}

Input/output types:

input output
polars_expression polars_expression
polars_selector polars_expression
polars_dataframe polars_dataframe
polars_lazyframe polars_lazyframe

Examples

Median aggregation for a group-by

> [[a b]; [one 2] [one 4] [two 1]]
                    | polars into-df
                    | polars group-by a
                    | polars agg (polars col b | polars median)
                    | polars collect
                    | polars sort-by a
╭───┬─────┬──────╮
│ # │  a  │  b   │
├───┼─────┼──────┤
│ 0 │ one │ 3.00 │
│ 1 │ two │ 1.00 │
╰───┴─────┴──────╯

Median value from columns in a dataframe

> [[a b]; [6 2] [4 2] [2 2]] | polars into-df | polars median | polars collect
╭───┬──────┬──────╮
│ # │  a   │  b   │
├───┼──────┼──────┤
│ 0 │ 4.00 │ 2.00 │
╰───┴──────┴──────╯

Ported from nushell/nushell.github.io. Copyright (c) 2021 Nushell Project. MIT License.