\item{phy}{an object of class \code{"phylo"}.}
\item{form}{(ignored).}
\item{fixed}{a logical specifying whether \code{gls} should
\item{phy}{an object of class \code{"phylo"}.}
\item{form}{(ignored).}
\item{fixed}{a logical specifying whether \code{gls} should
\item{object}{an (initialized) object of class \code{"corPagel"}.}
\item{covariate}{(ignored).}
\item{corr}{a logical value specifying whether to return the
\item{object}{an (initialized) object of class \code{"corPagel"}.}
\item{covariate}{(ignored).}
\item{corr}{a logical value specifying whether to return the
\description{
The correlation structure from the present model is derived from the
Brownian motion model by multiplying the off-diagonal elements (i.e.,
\description{
The correlation structure from the present model is derived from the
Brownian motion model by multiplying the off-diagonal elements (i.e.,