Combination of Variance Functions
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 ...
.
varComb(...)
... |
objects inheriting from class |
a varComb
object representing a combination of variance
functions, also inheriting from class varFunc
.
José Pinheiro and Douglas Bates bates@stat.wisc.edu
Pinheiro, J.C., and Bates, D.M. (2000) "Mixed-Effects Models in S and S-PLUS", Springer.
vf1 <- varComb(varIdent(form = ~1|Sex), varPower())
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