polars math cos

For dataframe.

Compute the element-wise cosine of a column expression.

warning This command requires a plugin The polars math cos 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 math cos {flags}

Input/output types:

input output
polars_expression polars_expression
polars_selector polars_expression

Examples

Compute the element-wise cosine of a float column

> [[a]; [0.0] [3.141592653589793]] |
    polars into-df |
    polars select (polars col a | polars math cos) |
    polars collect
╭───┬───────╮
│ # │   a   │
├───┼───────┤
│ 0 │  1.00 │
│ 1 │ -1.00 │
╰───┴───────╯

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