# check_endpoints: Checks if two equally sized numeric vectors satisfy the... In genscore: Generalized Score Matching Estimators

## Description

Checks if two equally sized numeric vectors satisfy the requirements for being left and right endpoints of a domain defined as a union of intervals.

## Usage

 `1` ```check_endpoints(lefts, rights) ```

## Arguments

 `lefts` A non-empty vector of numbers (may contain `-Inf`), the left endpoints of a domain defined as a union of intervals. `rights` A non-empty vector of numbers (may contain `Inf`), the right endpoints of a domain defined as a union of intervals. Must have the same size as `lefts`.

## Details

Both `lefts` and `rights` must be non-empty and should have the same length. Suppose `lefts` and `rights` both have length l, [lefts, rights], ..., [lefts[l], rights[l]] must be an increasing and non-overlapping set of valid intervals, meaning lefts[i] <= rights[i] <= lefts[j] for any i < j (singletons and overlapping at the boundary points are allowed). `Inf` is not allowed in `lefts` and `-Inf` is not allowed in `rights`.

## Value

`NULL`. Program stops if `lefts` and `rights` do not define valid left and right endpoints.

## Examples

 ``` 1 2 3 4 5 6 7 8 9 10 11 12 13``` ```## [-4,-3], [-2,-1], [0,1], [2,3], [4,5] check_endpoints(lefts=c(-4,-2,0,2,4), rights=c(-3,-1,1,3,5)) ## Not run: check_endpoints(lefts=c(), rights=c()) # Cannot be empty check_endpoints(lefts=c(-4,-2,0,2,4), rights=c(-3,-1,1,3)) # Unequal length check_endpoints(lefts=c(Inf), rights=c(Inf)) # No Inf in lefts, otherwise invalid interval check_endpoints(lefts=c(-Inf), rights=c(-Inf)) # No -Inf in rights, otherwise invalid interval check_endpoints(lefts=c(0, 1), rights=c(2, 3)) # [0,2] and [1,3] overlap, not allowed check_endpoints(lefts=c(2, 0), rights=c(3, 1)) # [2,3], [0,1] not increasing, not allowed ## End(Not run) ## Singletons and overlapping at the boundary points allowed check_endpoints(lefts=c(0, 1, 2), rights=c(0, 2, 3)) ```

genscore documentation built on April 28, 2020, 1:06 a.m.