pdgradNumeric {lme4}R Documentation

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.

Author(s)

Douglas Bates bates@stat.wisc.edu and Saikat DebRoy saikat@stat.wisc.edu

Examples






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