Combination of Variance Functions

Description

This function is a constructor for the varComb class, representing a combination of variance functions. The corresponding variance function is equal to the product of the variance functions of the varFunc objects listed in ....

Usage

varComb(...)

Arguments

Value

a varComb object representing a combination of variance functions, also inheriting from class varFunc.

Author(s)

José Pinheiro 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

varClasses, varWeights.varComb, coef.varComb

Examples

vf1 <- varComb(varIdent(form = ~1|Sex), varPower())