Extract Variance Function Weights

Usage

varWeights(object)

Arguments

object an object inheriting from class code{varFunc}, representing a variance function structure.

Description

The inverse of the standard deviations corresponding to the variance function structure represented by object are returned.

Value

if object has a weights attribute, its value is returned; else NULL is returned.

Author(s)

Jose Pinheiro and Douglas Bates

See Also

logLik.varFunc

Examples

library(lme)
data(Orthodont)
vf1 <- varPower(form=~age)
vf1 <- initialize(vf1, Orthodont)
coef(vf1) <- 0.3
varWeights(vf1)[1:10]


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