R: Counting: year-day

year-day-count-between {clock} | R Documentation

## Counting: year-day

### Description

This is a year-day method for the `calendar_count_between()` generic. It counts the number of `precision` units between `start` and `end` (i.e., the number of years).

### Usage

    ## S3 method for class 'clock_year_day'
    calendar_count_between(start, end, precision, ..., n = 1L)

### Arguments

`start, end` | `[clock_year_day]` A pair of year-day vectors. These will be recycled to their common size.
`precision` | `[character(1)]` One of: `"year"`
`...` | These dots are for future extensions and must be empty.
`n` | `[positive integer(1)]` A single positive integer specifying a multiple of `precision` to use.

### Value

An integer representing the number of `precision` units between `start` and `end`.

### Examples

    # Compute an individual's age in years
    x <- year_day(2001, 100)
    y <- year_day(2021, c(99, 101))

    calendar_count_between(x, y, "year")

    # Or in a whole number multiple of years
    calendar_count_between(x, y, "year", n = 3)

[Package clock version 0.6.0 Index]