Inner product of two vectors or matrices

Computes the element-wise inner product sum(x * y), equivalent to as.numeric(t(x) %*% y) for vectors.

Usage

dot(x, y)

Arguments

x

A numeric vector, matrix, or aMatrix.

y

A numeric vector, matrix, or aMatrix conformable with x.

Value

A single numeric scalar.

Examples

dot(1:4, 4:1)
#> [1] 20