Method: Polars::Functions#median

Defined in:
lib/polars/functions/lazy.rb

#median(*columns) ⇒ Expr

Get the median value.

This function is syntactic sugar for pl.col(columns).median.

Examples:

df = Polars::DataFrame.new(
  {
    "a" => [1, 8, 3],
    "b" => [4, 5, 2],
    "c" => ["foo", "bar", "foo"]
  }
)
df.select(Polars.median("a"))
# =>
# shape: (1, 1)
# ┌─────┐
# │ a   │
# │ --- │
# │ f64 │
# ╞═════╡
# │ 3.0 │
# └─────┘
df.select(Polars.median("a", "b"))
# =>
# shape: (1, 2)
# ┌─────┬─────┐
# │ a   ┆ b   │
# │ --- ┆ --- │
# │ f64 ┆ f64 │
# ╞═════╪═════╡
# │ 3.0 ┆ 4.0 │
# └─────┴─────┘

Parameters:

  • columns (Array) —

    One or more column names.

Returns:

[View source]

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# File 'lib/polars/functions/lazy.rb', line 316

def median(*columns)
  col(*columns).median
end