.\" -*- nroff -*- generated from .Rd format
.BG
.FN needUpdate
.TL
Check if Update is Needed
.DN
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.
.CS
needUpdate(object)
.RA
.AG object
any object
.RT
a logical value indicating whether `object' needs to be updated.


.EX
vf1 <- varExp()
vf1 <- initialize(vf1, data = Orthodont)
needUpdate(vf1)
.KW models
.WR
