File: gcv.l1ce.Rd

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% Copyright (C) 1998
% Berwin A. Turlach <bturlach@stats.adelaide.edu.au>
% Bill Venables <wvenable@stats.adelaide.edu.au>
% $Id: gcv.l1ce.d,v 1.4 1999/12/01 05:10:52 bturlach Exp $
% --> ../COPYRIGHT for more details
\name{gcv.l1ce}
\alias{gcv.l1ce}
\alias{gcv.l1celist}
\title{`gcv()' Methods for `l1ce' and `l1celist' Objects.}
\usage{
\method{gcv}{l1ce}(object, type = c("OPT", "Tibshirani"),
    gen.inverse.diag = 0, \dots)
\method{gcv}{l1celist}(object, type = c("OPT", "Tibshirani"),
    gen.inverse.diag = 0, \dots)
}
\arguments{
  \item{object}{an object of class \code{l1ce} or \code{l1celist}.}
  \item{type}{character (string) indicating whether to use the
    covariance formula of Osborne, Presnell and Turlach or the formula
    of Tibshirani.}
  \item{gen.inverse.diag}{
    if Tibshirani's formula for the covariance matrix is used, this value
    is used for the diagonal elements of the generalised inverse that
    appears in the formula that corresponds to parameters estimated to be
    zero.  The default is 0, i.e. use the Moore-Penrose inverse.
    Tibshirani's code uses \code{gen.inverse.diag = 1e11}.}
  \item{\dots}{further potential arguments passed to methods.}
}
\description{
  This is a method for the function \code{gcv()} for objects inheriting
  from class \code{l1ce} or \code{l1celist}.
}
\seealso{
  \code{\link{gcv}} for the general behavior of this function;
  \code{\link{l1ce.object}} and \code{\link{l1celist.object}} for
  description of the \code{object} argument.
}
\details{
See documentation.
}
\keyword{models}
% Converted by Sd2Rd version 1.21.