trivial_intervals.int: Trivial and Non-Trivial Intervals Example Dataset

In dataSDA: Datasets and Basic Statistics for Symbolic Data Analysis

Trivial and Non-Trivial Intervals Example Dataset

Description

Simple 5x3 example illustrating different interval types: full intervals (hyperrectangles), degenerate intervals (lines), and trivial intervals (points). Used for vertices PCA demonstration.

Usage

data(trivial_intervals.int)

Format

A data frame with 5 observations (w1–w5) and 6 columns (3 interval variables in _l/_u Min-Max pairs):

• y1_l, y1_u: First interval variable.

• y2_l, y2_u: Second interval variable.

• y3_l, y3_u: Third interval variable.

Metadata

Sample size (n)	5
Variables (p)	6
Subject area	Methodology
Symbolic format	Interval
Analytical tasks	PCA

References

Billard, L. and Diday, E. (2006). Symbolic Data Analysis. Wiley. Table 5.1, p.146.

Examples

data(trivial_intervals.int)

dataSDA documentation built on June 12, 2026, 9:06 a.m.