format_date_xx {dint}

Format a date_xx

Description

Format a date_xx

Usage

## S3 method for class 'date_y'
format(x, format = "%Y", ...)

## S3 method for class 'date_yq'
format(
  x,
  format = "%Y-Q%q",
  month_names = format(ISOdate(2000, 1:12, 1), "%B"),
  month_abb = format(ISOdate(2000, 1:12, 1), "%b"),
  ...
)

## S3 method for class 'date_ym'
format(
  x,
  format = "%Y-M%m",
  month_names = format(ISOdate(2000, 1:12, 1), "%B"),
  month_abb = format(ISOdate(2000, 1:12, 1), "%b"),
  ...
)

## S3 method for class 'date_yw'
format(x, format = "%Y-W%V", ...)

format_yq_iso(x)

format_yq_short(x)

format_yq_shorter(x)

format_ym_iso(x)

format_ym_short(x)

format_ym_shorter(x)

format_yw_iso(x)

format_yw_short(x)

format_yw_shorter(x)

Arguments

x

any R object.

format

A format that uses a subset of the same placeholders as base::strptime():

⁠%Y⁠	Year with century (the full year)
⁠%y⁠	Year without century (the last two digits of the year)
⁠%m⁠	Month as a decimal numbers (01-12)
⁠%B⁠	Full month name
⁠%b⁠	Abbreviated month name
⁠%V⁠	Week of the year as decimal number (01-53) as defined in ISO8601

Not all placeholders are supported for all date_xx subclasses. Literal "%" can be escaped with "%%" (as in base::sprintf()).

...

ignored

month_names, month_abb

a character vector of length 12: Names and abbreviations for months that will be used for the placeholders "%b" and "%B". Defaults to the values for the current locale for compatibility with base::strptime().

Value

a character vector

Formatting shorthands

Format shorthand functions in the form of ⁠format_y*_[preset]()⁠ directly apply formatting presets to anything that can be coerced to a date_xx. This is notably handy as they can be used as a labeling function for ggplot2 axes (see vignette("dint"))

Examples

x <- date_ym(2018, c(1L, 10L, 3L, 6L, 4L, 5L, 7L, 12L, 2L, 9L, 8L, 11L))
fm <- "%Y-M%m: %B,%b"

format(
  x,
  format = fm,
  month_names = month.name,  # built-in R constant for English names
  month_abb = month.abb
)