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\name{G_Rows}
\alias{Rows}
\title{Extract rows from a list}
\description{
Convenience function to extract subset of a list. Usually used in
creating keys.
}
\usage{
Rows(x, which)
}
\arguments{
\item{x}{ list with each member a vector of the same length }
\item{which}{ index for members of \code{x}}
}
\value{
A list similar to \code{x}, with each \code{x[[i]]} replaced by
\code{x[[i]][which]}
}
\author{ Deepayan Sarkar \email{Deepayan.Sarkar@R-project.org}}
\seealso{\code{\link{xyplot}}, \code{\link{Lattice}}}
\keyword{utilities}
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