Check if Update is Needed

Usage

needUpdate(object)

Arguments

object any object

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 Bates

Examples

library(lme)
data(Orthodont)
vf1 <- varExpon()
vf1 <- initialize(vf1, data = Orthodont)
needUpdate(vf1)


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