interval_geometry: Geometric Properties of Interval Data

In dataSDA: Datasets and Basic Statistics for Symbolic Data Analysis

Geometric Properties of Interval Data

Description

Functions to compute geometric characteristics of interval-valued data.

Usage

int_width(x, var_name, ...)

int_radius(x, var_name, ...)

int_center(x, var_name, ...)

int_overlap(x, var_name1, var_name2, ...)

int_containment(x, var_name1, var_name2, ...)

int_midrange(x, var_name, ...)

Arguments

x	interval-valued data with symbolic_tbl class.
var_name	the variable name or the column location (multiple variables are allowed).
...	additional parameters
var_name1	the first variable name or column location.
var_name2	the second variable name or column location.

Details

These functions compute basic geometric properties:

• int_width: Width of each interval (upper - lower)

• int_radius: Radius of each interval (width / 2)

• int_center: Center point of each interval ((lower + upper) / 2)

• int_overlap: Overlap measure between two interval variables

• int_containment: Check if one interval contains another

• int_midrange: Half-range of each interval ((upper - lower) / 2)

Value

A numeric matrix or value

Author(s)

Han-Ming Wu

See Also

int_width int_radius int_center int_overlap

Examples

data(mushroom.int)

# Calculate interval widths
int_width(mushroom.int, var_name = "Pileus.Cap.Width")
int_width(mushroom.int, var_name = 2:3)

# Calculate interval radius
int_radius(mushroom.int, var_name = c("Stipe.Length", "Stipe.Thickness"))

# Get interval centers
int_center(mushroom.int, var_name = 2:4)

# Measure overlap between two variables
int_overlap(mushroom.int, "Pileus.Cap.Width", "Stipe.Length")

# Check containment
int_containment(mushroom.int, "Pileus.Cap.Width", "Stipe.Length")

# Calculate midrange
int_midrange(mushroom.int, var_name = 2:3)

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