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(...) 

REQUIRED ARGUMENTS:

...
objects inheriting from class varFunc representing variance function structures.

VALUE:

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

NOTE:

You can use the functions varWeights.varComb and coef.varComb to extract the weights and coefficients, respectively, from the variance function structure. For more details, see the links below for the generic functions varWeights and coef.varFunc.

SEE ALSO:

, ,

EXAMPLES:

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