

   CCrreeaattee aa PPoowweerr LLiinnkk OObbjjeecctt

        power(lambda = 1)

   AArrgguummeennttss::

     lambda: a real number.

   DDeessccrriippttiioonn::

        Creates a link object based on the link function eta =
        mu^lambda.

   DDeettaaiillss::

        If `lambda' is non-negative, it is taken as zero, and
        the log link is obtained.  The default `lambda = 1'
        gives the identity link.

   VVaalluuee::

        A list with components `linkfun', `linkinv', `mu.eta',
        and `valideta'.  See `make.link' for information on
        their meaning.

   SSeeee AAllssoo::

        `make.link', `family'

   EExxaammpplleess::

        power()
        quasi(link=power(1/3))[c("linkfun", "linkinv")]

