IntervalQuestionStat (version 0.2.0)

IntervalData-class: S4 class representing a single interval

Description

Each nonempty compact real interval \(K\) can be alternatively characterized in terms of either its lower and upper bounds (also called infimum and supremum, respectively) through what is usually known as its inf/sup-characterization or either its mid-point and spread (also named center and radius, respectively) by means of its mid/spr-characterization as follows, $$K = [\inf K,\sup K]=[\mathrm{mid}~K \mp \mathrm{spr}~K],$$ where both \(\inf K \leq \sup K\) and \(\mathrm{spr}~K \geq 0\) conditions are fulfilled. The existing equivalence relation between these two characterizations is given by the following two equations: $$\mathrm{mid}~K = \frac{\sup K + \inf K}{2} \qquad \mathrm{and} \qquad \mathrm{spr}~K = \frac{\sup K - \inf K}{2}.$$

Slots

mid:

A single real number saved as a unique numeric value specifying the mid-point of the interval.

spr:

A single real number saved as a unique numeric value specifying the spread of the interval.

Author

José García-García

See Also

Objects of IntervalData class should be created through IntervalData() function. Besides IntervalData class, the IntervalQuestionStat package also incorporates IntervalList-class and IntervalMatrix-class for dealing with interval-valued data in R environment.

Examples

showClass("IntervalData")
showMethods(classes = "IntervalData")