\name{flipper}
\docType{data}
\alias{flipper}
\title{Artificial dataset: flipper}
\description{
Four convex clusters without a pairwise grouping such that a 2 cluster solution is not stable.
}
\usage{data(flipper)}
\format{A dataframe with columns x, y and cluster}
\source{Artificial}
\references{
Oehlschlägel, J. (2006) \emph{Scalable robust clustering with model selection}.
}
\seealso{ \code{\link{noflipper}}, \code{\link{symflipper}} }
\keyword{datasets}
