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% $Id: collapse.Rd,v 1.4.2.1 2003/04/17 22:28:45 bates Exp $
\name{collapse}
\title{Collapse According to Groups}
\usage{
collapse(object, \dots)
}
\alias{collapse}
\arguments{
\item{object}{an object to be collapsed, usually a data frame.}
\item{\dots}{some methods for the generic may require additional
arguments.}
}
\description{
This function is generic; method functions can be written to handle
specific classes of objects. Currently, only a \code{groupedData}
method is available.
}
\value{
will depend on the method function used; see the appropriate documentation.
}
\author{Jose Pinheiro \email{Jose.Pinheiro@pharma.novartis.com} and Douglas Bates \email{bates@stat.wisc.edu}}
\seealso{\code{\link{collapse.groupedData}}}
\examples{
## see the method function documentation
}
\keyword{models}
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