DfSattHelper {VCA}

Variance-Covariance Matrix of Fixed Effects as Function of Covariance Parameter Estimates

Description

This is a helper function for function test.fixef approximating degrees of freedom for linear contrasts of fixed effect parameter estimates.

Usage

DfSattHelper(obj, x)

Arguments

obj

(VCA) object

x

(numeric) vector of covariance parameter estimates

Value

(matrix) corresponding to the variance-covariance matrix of fixed effects