

   NLSstRtAsymptote {nls}                       R Documentation

   HHoorriizzoonnttaall AAssyymmppttoottee oonn tthhee RRiigghhtt SSiiddee

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

        Provide an initial guess at the horizontal asymptote on
        the right side (i.e. large values of `x') of the graph
        of `y' versus `x' from the `xy' object.  Primarily used
        within `initial' functions for self-starting nonlinear
        regression models.

   UUssaaggee::

        NLSstRtAsymptote(xy)

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

         xy: a `sortedXyData' object

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

        A single numeric value estimating the horizontal asymp-
        tote for large `x'.

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

        Jose Pinheiro and Douglas Bates

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

        `sortedXyData', `NLSstClosestX', `NLSstRtAsymptote',
        `selfStart'

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

        library( nls )
        data( DNase )
        DNase.2 <- DNase[ DNase$Run == "2", ]
        DN.srt <- sortedXyData( expression(log(conc)), expression(density), DNase.2 )
        NLSstRtAsymptote( DN.srt )

