\name{saddle.distn.object}
\alias{saddle.distn.object}
\title{
Saddlepoint Distribution Approximation Objects
}
\description{
  Class of objects that result from calculating saddlepoint distribution
  approximations by a call to \code{saddle.distn}.
}
\section{Generation}{
  This class of objects is returned from calls to the function
  \code{\link{saddle.distn}}.
}
\section{Methods}{
  The class \code{"saddle.distn"} has methods for the functions
  \code{\link{lines}} and \code{\link{print}}.
}
\section{Structure}{
  Objects of class \code{"saddle.distn"} are implemented as a list with
  the following components.

  \item{quantiles}{
    A matrix with 2 columns.  The first column contains the
    probabilities \code{alpha} and the second column contains the
    estimated quantiles of the distribution at those probabilities
    derived from the spline.
  }
  \item{points}{
    A matrix of evaluations of the saddlepoint approximation.  The first
    column contains the values of \code{t} which were used, the second
    and third contain the density and cdf approximations at those points
    and the rest of the columns contain the solutions to the saddlepoint
    equations.  When \code{type} is \code{"simp"}, there is only one of
    those.  When \code{type} is \code{"cond"} there are \code{2*d-1}
    where \code{d} is the number of columns in \code{A} or the output of
    \code{A(t,\dots{})}. The first \code{d} of these correspond to the
    numerator and the remainder correspond to the denominator.
  }
  \item{distn}{
    An object of class \code{smooth.spline}.  This corresponds to the
    spline fitted to the saddlepoint cdf approximations in points in
    order to approximate the entire distribution.  For the structure of
    the object see \code{smooth.spline}.
  }
  \item{call}{
    The original call to \code{saddle.distn} which generated the object.
  }
  \item{LR}{
    A logical variable indicating whether the Lugananni-Rice
    approximations were used.
  }
}
\seealso{
  \code{\link{lines.saddle.distn}}, \code{\link{saddle.distn}},
  \code{\link{print.saddle.distn}}
}
\keyword{nonparametric}
\keyword{methods}
\keyword{smooth}
