

   CChheecckk iiff OObbjjeecctt iiss IInniittiiaalliizzeedd

        isInitialized(object)

   AArrgguummeennttss::

     object: any object requiring initialization.

   DDeessccrriippttiioonn::

        Checks if `object' has been initialized (generally
        through a call to `initialize'), by searching for com-
        ponents and attributes which are modified during ini-
        tialization.

   VVaalluuee::

        a logical value indicating whether `object' has been
        initialized.

   AAuutthhoorr((ss))::

        Jose Pinheiro and Douglas Bates

   SSeeee AAllssoo::

        `initialize'

   EExxaammpplleess::

        library(lme)
        pd1 <- pdDiag(~age)
        isInitialized(pd1)

