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

### References

Pinheiro, J.C., and Bates, D.M. (2000) "Mixed-Effects Models in S and S-PLUS", Springer.

### See Also

`varWeights`

[Package nlme version 3.1-86 Index]