format_period_quarter: Create consistent, complete quarter (three-month) periods

In bayesiandemography/demprep: Prepare Demographic Data

Description

Given a vector of period labels, create a factor that contains levels for the earliest and latest periods in x, and for all periods in between.

Usage

format_period_quarter(x)

Arguments

x	A vector of period labels.

Details

Quarters are defined as follows:

Quarter	Start	End
Q1	1 January	31 March
Q2	1 April	30 June
Q3	1 July	30 September
Q4	1 October	31 December

The elements of x must all be single quarters, eg "2001 Q2" or "2055 Q1". Open intervals such as "<2001 Q2" are not allowed.

If x contains NA, then the levels of the factor created by format_period_quarter also contain NA.

Value

A factor with the same length as x.

See Also

Other functions for reformating period labels are

• format_period_year

• format_period_multi

• format_period_custom

• format_period_month

date_to_period_quarter creates quarter periods from dates.

Examples

format_period_quarter(x = c("2000 Q4", "2005 Q1", NA, "2004 Q3"))

bayesiandemography/demprep documentation built on Dec. 28, 2021, 8:47 a.m.