| IntervalData-class {IntervalQuestionStat} | R Documentation |
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
numericvalue specifying the mid-point of the interval.spr:A single real number saved as a unique
numericvalue specifying the spread of the interval.
Author(s)
José García-García garciagarjose@uniovi.es
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")