# s_e_points: Derives a subset of integers from a given set In IDetect: Isolate-Detect Methodology for Multiple Change-Point Detection

## Description

This function finds two subsets of integers in a given interval `[s,e]`. The routine is typically not called directly by the user; its result is used in order to construct the expanding intervals, where the Isolate-Detect method is going to be applied. For more details on how the Isolate-Detect methodology works, see References.

## Usage

 `1` ```s_e_points(r, l, s, e) ```

## Arguments

 `r` A positive integer vector containing the set, from which the end-points of the expanding intervals are to be chosen. `l` A positive integer vector containing the set, from which the start-points of the expanding intervals are to be chosen. `s` A positive integer indicating the starting position, in the sense that we will choose the elements from `r` and `l` that are greater than `s`. `e` A positive integer indicating the finishing position, in the sense that we will choose the elements from `r` and `l` that are less than `e`.

## Value

`e_points` A vector containing the points that will be used as end-points, in order to create the left-expanding intervals. It consists of the input `e` and all the elements in the input vector `r` that are in `(s,e)`.

`s_points` A vector containing the points that will be used as start-points, in order to create the left-expanding intervals. It consists of the input `s` and all the elements in the input vector `l` that are in `(s,e)`

## Author(s)

Andreas Anastasiou, a.anastasiou@lse.ac.uk

## References

Anastasiou, A. and Fryzlewicz, P. (2018). Detecting multiple generalized change-points by isolating single ones.

## Examples

 ```1 2``` ```s_e_points(r = seq(10,1000,10), l = seq(991,1,-10), s=435, e = 786) s_e_points(r = seq(3,100,3), l = seq(98,1,-3), s=43, e = 86) ```

IDetect documentation built on May 2, 2019, 11:04 a.m.