varWeights.glsStruct          package: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'

