lme4 (version 0.3-3)

pdgradNumeric: Evaluate the pdmatrix gradient numerically

Description

Evaluate the pdmatrix gradient via finite differences. This function is used to validate the pdgradient methods for pdMat classes.

Usage

pdgradNumeric(x)

Arguments

x

A pdMat object

Value

• A finite-difference approximation to the gradient of the pdmatrix represented by x with respect to the parameters of x.