Method: Polars::Expr#dot

Defined in:
lib/polars/expr.rb

#dot(other) ⇒ Expr

Compute the dot/inner product between two Expressions.

Examples:

df = Polars::DataFrame.new(
  {
    "a" => [1, 3, 5],
    "b" => [2, 4, 6]
  }
)
df.select(Polars.col("a").dot(Polars.col("b")))
# =>
# shape: (1, 1)
# ┌─────┐
# │ a   │
# │ --- │
# │ i64 │
# ╞═════╡
# │ 44  │
# └─────┘

Parameters:

  • other (Expr) —

    Expression to compute dot product with.

Returns:



1231
1232
1233
1234
 
# File 'lib/polars/expr.rb', line 1231

def dot(other)
  other = Utils.parse_into_expression(other, str_as_lit: false)
  wrap_expr(_rbexpr.dot(other))
end