Assign varFunc Covariate
Usage
covariate(object) <- value
Arguments
object
|
an object inheriting from class code{varFunc},
representing a variance function structure.
|
value
|
a value to be assigned to the covariate associated with
object .
|
Description
The covariate(s) used in the calculation of the weights of the
variance function represented by object
is (are) replaced by
value
. If object
has been initialized, value
must
have the same dimensions as getCovariate(object)
.Value
a varFunc
object similar to object
, but with its
covariate
attribute replaced by value
.Author(s)
Jose Pinheiro and Douglas BatesSee Also
getCovariate.varFunc
Examples
library(lme)
data(Orthodont)
vf1 <- varPower(1.1, form = ~age)
covariate(vf1) <- Orthodont[["age"]]