---
title: "Stack Overflow Examples"
output: rmarkdown::html_vignette
vignette: >
  %\VignetteIndexEntry{Stack Overflow Examples}
  %\VignetteEngine{knitr::rmarkdown}
  %\VignetteEncoding{UTF-8}
---

```{r, include = FALSE}
knitr::opts_chunk$set(
  collapse = TRUE,
  comment = "#>"
)
```

This vignette collects links to a number of Stack Overflow questions that use ivs to answer them. They are roughly grouped by the function used to solve the question.

#### iv_groups()

- [Flatten / Merge overlapping time periods by group](https://stackoverflow.com/questions/28938147/how-to-flatten-merge-overlapping-time-periods/71754454#71754454)

- [Merge millisecond date-time periods](https://stackoverflow.com/questions/60322604/merge-overlapping-time-periods-with-milliseconds-in-r/71754233#71754233)

- [Merge overlapping date-time intervals by group](https://stackoverflow.com/questions/53213418/collapse-and-merge-overlapping-time-intervals/71753991#71753991)

- [Group hospital patient stay dates](https://stackoverflow.com/questions/72188780/grouping-dates-in-r-to-create-patient-episodes/72189705#72189705)

- [Merge overlaps within groups](https://stackoverflow.com/questions/56190415/group-by-if-overlap/73636229#73636229)

- [Detect self-overlaps within groups](https://stackoverflow.com/questions/34951356/r-find-overlap-among-time-periods/73639374#73639374)

#### iv_identify_group()

- [Identify overlapping date ranges](https://stackoverflow.com/questions/57208770/identify-overlapping-date-ranges-by-id-r/71753203#71753203)

- [Determine if a date interval overlaps other date intervals](https://stackoverflow.com/questions/58283935/r-determine-if-each-date-interval-overlaps-with-all-other-date-intervals-in-a-d/71753341#71753341)

- [Identify active maintanence types](https://stackoverflow.com/questions/72062736/generate-new-variable-based-on-start-and-stop-date-in-dplyr/72063499#72063499)

#### iv_identify_splits()

- [Find overlaps and create new rows for each overlap](https://stackoverflow.com/questions/46151452/find-overlapping-dates-for-each-id-and-create-a-new-row-for-the-overlap/71753687#71753687)

#### iv_count_between()

- [Aggregate rolling enrollment by month](https://stackoverflow.com/questions/71621389/use-dplyr-to-aggregate-counts-by-month-from-start-stop-ranged-variables/71752959#71752959)

- [Another aggregate rolling enrollment by month](https://stackoverflow.com/questions/73561876/finding-how-many-records-are-open-in-a-month-in-a-dataset-containing-single-rec/73575090#73575090)

#### iv_count_overlaps()

- [Detect self-overlaps](https://stackoverflow.com/questions/40129485/overlap-ranges-in-single-dataframe/73636659#73636659)

#### iv_count_includes()

- [Track rolling monthly disease prevalence](https://stackoverflow.com/questions/75221096/how-to-aggregate-data-by-month-using-study-start-and-end-dates-in-r-to-calculate/75222987#75222987)

#### iv_set_complement()

- [Find ranges of dates where an apartment is empty](https://stackoverflow.com/questions/72536566/adding-rows-for-missing-intervals-between-existing-intervals-in-r/72547866#72547866)

#### iv_locate_overlaps()

- [Locate self overlaps and compute a proportion within those overlaps](https://stackoverflow.com/questions/72987129/count-instances-of-value-within-overlapping-dates/73039209#73039209)

#### iv_overlaps()

- [Detecting if there are any overlaps between two sets of ranges](https://stackoverflow.com/questions/26905601/comparing-and-finding-overlap-range-in-r/73639244#73639244)