% Generated by roxygen2: do not edit by hand
% Please edit documentation in R/data.R
\docType{data}
\name{trivial_intervals.int}
\alias{trivial_intervals.int}
\title{Trivial and Non-Trivial Intervals Example Dataset}
\format{
A data frame with 5 observations (w1--w5) and 6 columns (3 interval
variables in \code{_l}/\code{_u} Min-Max pairs):
\itemize{
    \item \code{y1_l}, \code{y1_u}: First interval variable.
    \item \code{y2_l}, \code{y2_u}: Second interval variable.
    \item \code{y3_l}, \code{y3_u}: Third interval variable.
}
}
\usage{
data(trivial_intervals.int)
}
\description{
Simple 5x3 example illustrating different interval types: full intervals
(hyperrectangles), degenerate intervals (lines), and trivial intervals
(points). Used for vertices PCA demonstration.
}
\section{Metadata}{

\tabular{ll}{
  \strong{Sample size (n)} \tab 5 \cr
  \strong{Variables (p)} \tab 6 \cr
  \strong{Subject area} \tab Methodology \cr
  \strong{Symbolic format} \tab Interval \cr
  \strong{Analytical tasks} \tab PCA
}
}

\examples{
data(trivial_intervals.int)
}
\references{
Billard, L. and Diday, E. (2006). \emph{Symbolic Data Analysis}. Wiley.
Table 5.1, p.146.
}
\keyword{PCA}
\keyword{datasets}
\keyword{interval}
