Fill floating point NaN value with a fill value

Description

Fill floating point NaN value with a fill value

Usage

<Expr>$fill_nan(value)

Arguments

value

Value used to fill NaN values.

Value

A polars expression

Examples

library("polars")

df <- pl$DataFrame(a = c(1, NA, 2, NaN))
df$with_columns(
  filled_nan = pl$col("a")$fill_nan(99)
)

#> shape: (4, 2)
#> ┌──────┬────────────┐
#> │ a    ┆ filled_nan │
#> │ ---  ┆ ---        │
#> │ f64  ┆ f64        │
#> ╞══════╪════════════╡
#> │ 1.0  ┆ 1.0        │
#> │ null ┆ null       │
#> │ 2.0  ┆ 2.0        │
#> │ NaN  ┆ 99.0       │
#> └──────┴────────────┘