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Round

Source code

Description

Round underlying floating point data by decimals digits.

Usage

<Expr>$round(decimals)

Arguments

decimals Number of decimals to round by.

Value

Expr

Examples

library("polars")

pl$DataFrame(a = c(0.33, 0.5, 1.02, 1.5, NaN, NA, Inf, -Inf))$with_columns(
  round = pl$col("a")$round(1)
)

#> shape: (8, 2)
#> ┌──────┬───────┐
#> │ a    ┆ round │
#> │ ---  ┆ ---   │
#> │ f64  ┆ f64   │
#> ╞══════╪═══════╡
#> │ 0.33 ┆ 0.3   │
#> │ 0.5  ┆ 0.5   │
#> │ 1.02 ┆ 1.0   │
#> │ 1.5  ┆ 1.5   │
#> │ NaN  ┆ NaN   │
#> │ null ┆ null  │
#> │ inf  ┆ inf   │
#> │ -inf ┆ -inf  │
#> └──────┴───────┘