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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.
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