\name{helix}
\title{A helix structured toy data set}
\usage{data(helix)}
\description{Simulated data set looking like a helix}
\details{A matrix containing 1000 observations (rows) and three variables
(columns).}
\alias{helix}
\docType{data}
\references{Matthias Scholz, Fatma Kaplan, Charles L. Guy, Joachim
Kopka and Joachim Selbig. - Non-linear PCA: a missing data
approach.  \emph{Bioinformatics 2005 21(20):3887-3895}}
\keyword{datasets}
\author{Henning Redestig}