

   EExxttrraacctt FFoorrmmuullaa SSppeecciiffyyiinngg RReessppoonnssee VVaarriiaabbllee

        getResponseFormula(object)

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

     object: any object from which a formula can be extracted.

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

        The left hand side of `formula{object}' is returned as
        a one-sided formula.

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

        a one-sided formula with the response variable associ-
        ated with `formula{object}'.

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

        Jose Pinheiro and Douglas Bates

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

        `getResponse'

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

        library(lme)
        getResponseFormula(y ~ x | g)

