varWeights.glsStruct {nlme}R Documentation

Variance Weights for glsStruct Object

Description

If object includes a varStruct component, the inverse of the standard deviations of the variance function structure represented by the corresponding varFunc object are returned; else, a vector of ones of length equal to the number of observations in the data frame used to fit the associated linear model is returned.

Usage

## S3 method for class 'glsStruct':
varWeights(object)

Arguments

object an object inheriting from class glsStruct, representing a list of linear model components, such as corStruct and varFunc objects.

Value

if object includes a varStruct component, a vector with the corresponding variance weights; else, or a vector of ones.

Author(s)

Jose Pinheiro Jose.Pinheiro@pharma.novartis.com and Douglas Bates bates@stat.wisc.edu

See Also

varWeights


[Package Contents]