logLik.varFunc {nlme} | R Documentation |
This method function extracts the component of a Gaussian
log-likelihood associated with the variance function structure
represented by object
, which is equal to the sum of the
logarithms of the corresponding weights.
logLik(object, data)
object |
an object inheriting from class varFunc ,
representing a variance function structure. |
data |
this argument is included to make this method function
compatible with other logLik methods and will be ignored. |
the sum of the logarithms of the weights corresponding to the variance
function structure represented by object
.
Jose Pinheiro and Douglas Bates
data(Orthodont) vf1 <- varPower(form = ~age) vf1 <- initialize(vf1, Orthodont) coef(vf1) <- 0.1 logLik(vf1)