lazyframe

Replaces NaN values with the given expression.

This command requires a plugin

The polars fill-nan 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 fill-nan {flags} (fill)

Parameters

• fill: Expression to use to fill the NAN values

Input/output types:

input	output
any	any

Examples

Fills the NaN values with 0

> [1 2 NaN 3 NaN] | polars into-df | polars fill-nan 0
╭───┬───╮
│ # │ 0 │
├───┼───┤
│ 0 │ 1 │
│ 1 │ 2 │
│ 2 │ 0 │
│ 3 │ 3 │
│ 4 │ 0 │
╰───┴───╯

Fills the NaN values of a whole dataframe

> [[a b]; [0.2 1] [0.1 NaN]] | polars into-df | polars fill-nan 0
╭───┬──────┬───╮
│ # │  a   │ b │
├───┼──────┼───┤
│ 0 │ 0.20 │ 1 │
│ 1 │ 0.10 │ 0 │
╰───┴──────┴───╯