Check if Update is Needed
Usage
needUpdate(object)
Arguments
Description
This function is generic; method functions can be written to handle
specific classes of objects. By default, it tries to extract a
needUpdate
attribute of object
. If this is NULL
or FALSE
it returns FALSE
; else it returns TRUE
.
Updating of objects usually takes place in iterative algorithms in
which auxiliary quantities associated with the object, and not being
optimized over, may change.Value
a logical value indicating whether object
needs to be updated.Author(s)
Jose Pinheiro and Douglas BatesExamples
library(lme)
data(Orthodont)
vf1 <- varExpon()
vf1 <- initialize(vf1, data = Orthodont)
needUpdate(vf1)