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% $Id: solve.pdMat.Rd,v 1.7 2002/03/05 14:59:39 bates Exp $
\name{solve.pdMat}
\title{Calculate Inverse of a Positive-Definite Matrix}
\usage{
\method{solve}{pdMat}(a, b, \dots)
}
\alias{solve.pdMat}
\alias{solve.pdBlocked}
\alias{solve.pdDiag}
\alias{solve.pdIdent}
\alias{solve.pdLogChol}
\alias{solve.pdNatural}
\alias{solve.pdSymm}
\arguments{
\item{a}{an object inheriting from class \code{pdMat}, representing
a positive definite matrix.}
\item{b}{this argument is only included for consistency with the generic
function and is not used in this method function.}
\item{\dots}{some methods for this generic require additional
arguments. None are used in this method.}
}
\description{
The positive-definite matrix represented by \code{a} is inverted and
assigned to \code{a}.
}
\value{
a \code{pdMat} object similar to \code{a}, but with coefficients
corresponding to the inverse of the positive-definite matrix
represented by \code{a}.
}
\author{Jose Pinheiro \email{Jose.Pinheiro@pharma.novartis.com} and Douglas Bates \email{bates@stat.wisc.edu}}
\seealso{\code{\link{pdMat}}}
\examples{
pd1 <- pdCompSymm(3 * diag(3) + 1)
solve(pd1)
}
\keyword{models}
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