polars math abs for dataframe

Compute the absolute values of a column expression.

Signature

> polars math abs {flags}

Input/output types:

inputoutput
polars_expressionpolars_expression
polars_selectorpolars_expression

Examples

Compute the absolute value of an integer column

> [[a]; [0] [-1] [2] [-3] [4]] |
    polars into-df |
    polars select (polars col a | polars math abs) |
    polars collect
╭───┬───╮
│ # │ a │
├───┼───┤
│ 0 │ 0 │
│ 1 │ 1 │
│ 2 │ 2 │
│ 3 │ 3 │
│ 4 │ 4 │
╰───┴───╯