lazyframe

Filter dataframe based in expression.

This command requires a plugin

The polars filter 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 filter {flags} (filter expression)

Parameters

• filter expression: Expression that define the column selection

Input/output types:

input	output
any	any

Examples

Filter dataframe using an expression

> [[a b]; [6 2] [4 2] [2 2]] | polars into-df | polars filter ((polars col a) >= 4)
╭───┬───┬───╮
│ # │ a │ b │
├───┼───┼───┤
│ 0 │ 6 │ 2 │
│ 1 │ 4 │ 2 │
╰───┴───┴───╯