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ggm (version 2.5.1)

diagv: Matrix product with a diagonal matrix

Description

Computes faster the product of a diagonal matrix times a full matrix.

Usage

diagv(v, M)

Value

A matrix N.

Arguments

v

A numeric vector specifying the elements on the diagonal of a matrix.

M

A numeric matrix compatible with the product \(D_v M\).

Details

Computes \(N = D_v M\) where \(D_v\) is diagonal avoiding the diag operator.

See Also

Examples

Run this code
v <- 1:1000
M <- matrix(runif(3000), 1000, 3)
dim(diagv(v, M))

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