sum {IntervalQuestionStat} | R Documentation |
Calculate the sum of
intervals
Description
This function calculates the sum of nonempty compact real intervals.
Usage
## S4 method for signature 'IntervalList'
sum(x)
Arguments
x |
A list of intervals stored as an |
Details
This function generalizes the Minkowski's sum of two nonempty compact real
intervals explained in arithmetic section and implemented through
+
operator's method for two IntervalData
objects.
Value
This function returns an IntervalData
object with the calculated
sum of the given intervals, which is defined
as another nonempty compact real interval.
Author(s)
José García-García garciagarjose@uniovi.es
References
Hankin, R.K.S. (2010). A step-by-step guide to writing a simple package that uses S4 methods: a "hello world" example. Technical Report. Auckland University of Technology.
See Also
For further information of the interval arithmetic see arithmetic.
Examples
## The following code calculates the sum
## of a list with two different intervals
list <- IntervalList(c(1, 3), c(2, 5))
sum(list)