Package index

Class construction

These functions construct dates in the mdate class and durations in the mduration class:

new_messydate() validate_messydate() make_messydate() print(<mdate>) format(<mdate>)

A flexible date class for messy dates

new_messyduration() validate_messyduration() make_messyduration() print(<mduration>)

A flexible duration class for messy durations

`[`(<mdate>) `[<-`(<mdate>) `[[`(<mdate>) `[[<-`(<mdate>) c(<mdate>) rep(<mdate>)

Basic vector methods for mdate objects

Coerce to

These functions coerce dates from other classes to the mdate class:

as_messydate() mdate()

Coercion from common date classes to mdate

Coerce from

These functions coerce dates from the mdate class into a single Date:

as.Date(<mdate>) as.POSIXct(<mdate>) as.POSIXlt(<mdate>) as.data.frame(<mdate>) as.list(<mdate>) as.double(<mdate>) as_datetime(<mdate>)

Coercion from mdate to common date classes

vmin() min(<mdate>) vmax() max(<mdate>)

Resolves messy dates into an extrema

median(<mdate>) vmedian() mean(<mdate>) vmean() modal() vmodal() random() vrandom()

Resolves messy dates into a central tendency

Manipulation

These functions expand or contract objects of mdate class from/into a list:

contract()

Contract lists of dates into messy dates

expand()

Expand messy dates to lists of dates

seq(<mdate>)

Sequence method for messydates

Components

These functions annotate or extract components of dates and times:

on_or_before() on_or_after() approximate() uncertain()

Annotates dates as censored, uncertain, or approximate

year(<mdate>) month(<mdate>) mday(<mdate>) hour(<mdate>) minute(<mdate>) second(<mdate>) tz(<mdate>) precision()

Extracting components from messy dates

Operations

These methods help operate on objects of the mdate class:

`+`(<mdate>) `-`(<mdate>)

Arithmetic operations for messydates

`<`(<mdate>) `>`(<mdate>) `<=`(<mdate>) `>=`(<mdate>)

Logical operations on messy dates

`%l%` `%g%` `%ge%` `%le%` `%><%` `%>=<%`

Proportion of messy dates meeting logical test

`%intersect%` `%union%`

Set operations for messy dates

is_messydate() is_intersecting() is_subset() is_similar() is_precise() is_uncertain() is_approximate() is_bce()

Logical statements on messy dates

Data

Working with ‘messy’ data:

battles

Dates of battles in 2001