component_extract

year

month

precision

precision.mdate

These functions allow the extraction of particular date components
from messy dates, such as the <code>year()</code>, <code>month()</code>, and <code>day()</code>.
<code>precision()</code> allows for the identification of the greatest level of
precision in (currently) the first element of each date.

Contains a set of tools for constructing and coercing
into and from the "mdate" class.
This date class implements ISO 8601-2:2019(E) and
allows regular dates to be annotated
to express unspecified date components,
approximate or uncertain date components,
date ranges, and sets of dates.
This is useful for describing and analysing temporal information,
whether historical or recent, where date precision may vary.

James Hollway

messydates

A Flexible Class for Messy Dates

Henrique Sposito

Jael Tan

Nathan Werth

component_extract function

<dl><dt>x</dt>
<dd>A <code>mdate</code> object</dd></dl>

Arguments

Date precision is measured relative to the day in \(1/days(x)\).
That is, a date measured to the day will return a precision score
of 1, a date measured to the month will return a precision score of
between \(1/28\) and \(1/31\), and annual measures will have
a precision of between \(1/365\) and \(1/366\).

Precision

Extracting components from messy dates — component_extract

<dl>

<dt>x</dt>
<dd>A <code>mdate</code> object</dd>

</dl>

Date precision is measured relative to the day in \(1/days(x)\).
That is, a date measured to the day will return a precision score
of 1, a date measured to the month will return a precision score of
between \(1/28\) and \(1/31\), and annual measures will have
a precision of between \(1/365\) and \(1/366\).

component_extract: Extracting components from messy dates

Description

Usage

Value

Arguments

Precision

Examples