Package 'grates'

Title: Grouped Date Classes
Description: Provides a coherent interface and implementation for creating grouped date classes. This package is part of the RECON (<https://www.repidemicsconsortium.org/>) toolkit for outbreak analysis.
Authors: Tim Taylor [aut, cre]
Maintainer: Tim Taylor <[email protected]>
License: MIT + file LICENSE
Version: 1.2.2.9000
Built: 2024-09-20 07:50:37 UTC
Source: https://github.com/reconverse/grates

Help Index

Coerce to a epiweek object

Description

Generic for conversion to ⁠<grates_epiweek>⁠

Usage

as_epiweek(x, ...)

## Default S3 method:
as_epiweek(x, ...)

## S3 method for class 'Date'
as_epiweek(x, ...)

## S3 method for class 'POSIXt'
as_epiweek(x, ...)

## S3 method for class 'character'
as_epiweek(x, format, tryFormats = c("%Y-%m-%d", "%Y/%m/%d"), ...)

## S3 method for class 'factor'
as_epiweek(x, format, tryFormats = c("%Y-%m-%d", "%Y/%m/%d"), ...)

Arguments

x

R object.
...

Other values passed to as.Date().
format

⁠[character]⁠

Passed to as.Date() unless format = "yearweek" in which case input is assumed to be in the form "YYYY-Wxx".

If not specified, it will try tryFormats one by one on the first non-NA element, and give an error if none works. Otherwise, the processing is via strptime() whose help page describes available conversion specifications.
tryFormats

⁠[character]⁠

Format strings to try if format is not specified.

Details

  • Date, POSIXct, and POSIXlt are converted with the timezone respected.

  • Character objects are first coerced to date via as.Date() unless format = "yearweek" in which case input is assumed to be in the form "YYYY-Wxx" and parsed accordingly.

Value

A ⁠<grates_epiweek>⁠ object.

See Also

new_epiweek() and as.Date().

Examples

as_epiweek(Sys.Date())
as_epiweek(as.POSIXct("2019-03-04 01:01:01", tz = "America/New_York"))
as_epiweek("2019-05-03")
as_epiweek("2019-W12", format = "yearweek")

Coerce to a isoweek object

Description

Generic for conversion to ⁠<grates_isoweek>⁠

Usage

as_isoweek(x, ...)

## Default S3 method:
as_isoweek(x, ...)

## S3 method for class 'Date'
as_isoweek(x, ...)

## S3 method for class 'POSIXt'
as_isoweek(x, ...)

## S3 method for class 'character'
as_isoweek(x, format, tryFormats = c("%Y-%m-%d", "%Y/%m/%d"), ...)

## S3 method for class 'factor'
as_isoweek(x, format, tryFormats = c("%Y-%m-%d", "%Y/%m/%d"), ...)

Arguments

x

R object.
...

Other values passed to as.Date().
format

⁠[character]⁠

Passed to as.Date() unless format = "yearweek" in which case input is assumed to be in the form "YYYY-Wxx".

If not specified, it will try tryFormats one by one on the first non-NA element, and give an error if none works. Otherwise, the processing is via strptime() whose help page describes available conversion specifications.
tryFormats

⁠[character]⁠

Format strings to try if format is not specified.

Details

  • Date, POSIXct, and POSIXlt are converted with the timezone respected.

  • Character objects are first coerced to date via as.Date() unless format = "yearweek" in which case input is assumed to be in the form "YYYY-Wxx" and parsed accordingly.

Value

A ⁠<grates_isoweek>⁠ object.

See Also

new_isoweek() and as.Date().

Examples

as_isoweek(Sys.Date())
as_isoweek(as.POSIXct("2019-03-04 01:01:01", tz = "America/New_York"))
as_isoweek("2019-05-03")
as_isoweek("2019-W12", format = "yearweek")

Coerce an object to month

Description

as_month() is a generic for coercing input in to ⁠<grates_month>⁠.

Usage

as_month(x, n, ...)

## Default S3 method:
as_month(x, n, ...)

## S3 method for class 'Date'
as_month(x, n, ...)

## S3 method for class 'POSIXt'
as_month(x, n, ...)

## S3 method for class 'character'
as_month(x, n, ...)

## S3 method for class 'factor'
as_month(x, n, ...)

Arguments

x

An R object.

Character input is first parsed using as.Date().

POSIXt inputs are converted with the timezone respected.
n

⁠[integer]⁠

Number of months that are being grouped. Must be greater than 1 (use as_yearmonth() for this case).
...

Only used For character input where additional arguments are passed through to as.Date().

Value

A ⁠<grates_month>⁠ object.

Note

Internally grates_month objects are stored as the position, starting at 0, of n-month groups since the Unix Epoch (1970-01-01). Here n-months is taken to mean a 'grouping of n consecutive months'. Precision is only to the month level (i.e. the day of the month is always dropped).

References

The algorithm to convert between dates and months relative to the UNIX Epoch comes from the work of Davis Vaughan in the unreleased datea package.

See Also

as.Date()

Examples

as_month("2019-05-03", n = 4L)
as_month(as.POSIXct("2019-03-04 01:01:01", tz = "America/New_York"), n = 2)

Coerce an object to period

Description

as_period() is a generic for coercing input in to ⁠<grates_period>⁠.

Usage

as_period(x, n, ...)

## Default S3 method:
as_period(x, n = 1L, offset = 0L, ...)

## S3 method for class 'Date'
as_period(x, n = 1L, offset = 0L, ...)

## S3 method for class 'POSIXt'
as_period(x, n = 1L, offset = 0L, ...)

## S3 method for class 'character'
as_period(x, n = 1L, offset = 0L, ...)

## S3 method for class 'factor'
as_period(x, n = 1L, offset = 0L, ...)

Arguments

x

An R object:

  • Character input is first parsed using as.Date().

  • POSIXt inputs are converted with the timezone respected.

n

⁠[integer]⁠

Number of days that are being grouped.
...

Only used For character input where additional arguments are passed through to as.Date().
offset

⁠[integer]⁠ or ⁠[date]⁠

Value you wish to start counting periods from relative to the Unix Epoch:

  • For integer values this is stored scaled by n (offset <- as.integer(offset) %% n).

  • For date values this is first converted to an integer offset (offset <- floor(as.numeric(offset))) and then scaled via n as above.

Value

A ⁠<grates_period>⁠ object.

Note

Internally grates_period objects are stored as the integer number, starting at 0L, of periods since the Unix Epoch (1970-01-01) and a specified offset. Here periods are taken to mean groupings of n consecutive days.

See Also

as.Date()

Examples

as_period("2019-05-03")
as_period("2019-05-03", n = 2, offset = 1)
as_period(as.POSIXct("2019-03-04 01:01:01", tz = "America/New_York"), n = 10)
as_period(as.Date("2020-03-02"), n = 2L, offset = as.Date("2020-03-01"))

Coerce an object to year-quarter

Description

as_year() is a generic for coercing input in to ⁠<grates_year>⁠.

Usage

as_year(x, ...)

## Default S3 method:
as_year(x, ...)

## S3 method for class 'Date'
as_year(x, ...)

## S3 method for class 'POSIXt'
as_year(x, ...)

## S3 method for class 'character'
as_year(x, ...)

## S3 method for class 'factor'
as_year(x, ...)

Arguments

x

R object.

Character input is first parsed using as.Date().

POSIXct and POSIXlt are converted with the timezone respected.
...

Only used For character input where additional arguments are passed through to as.Date().

Value

A ⁠<grates_year>⁠ object.

See Also

as.Date()

Examples

as_year(Sys.Date())
as_year(as.POSIXct("2019-03-04 01:01:01", tz = "America/New_York"), interval = 2)
as_year("2019-05-03")

Coerce an object to year-month

Description

as_yearmonth() is a generic for coercing input in to ⁠<grates_yearmonth>⁠. Character input is first parsed using as.Date(). POSIXct and POSIXlt are all converted, with the timezone respected.

Usage

as_yearmonth(x, ...)

## Default S3 method:
as_yearmonth(x, ...)

## S3 method for class 'Date'
as_yearmonth(x, ...)

## S3 method for class 'POSIXt'
as_yearmonth(x, ...)

## S3 method for class 'character'
as_yearmonth(x, ...)

## S3 method for class 'factor'
as_yearmonth(x, ...)

Arguments

x

R object.
...

Only used For character input where additional arguments are passed through to as.Date().

Value

A ⁠<grates_yearmonth>⁠ object.

Note

Internally ⁠<grates_yearmonth>⁠ objects are stored as the number of months (starting at 0) since the Unix Epoch (1970-01-01). Precision is only to the month level (i.e. the day of the month is always dropped).

References

The algorithm to convert between dates and months relative to the UNIX Epoch comes from the work of Davis Vaughan in the unreleased datea package.

See Also

as.Date()

Examples

as_yearmonth(Sys.Date())
as_yearmonth(as.POSIXct("2019-03-04 01:01:01", tz = "America/New_York"), interval = 2)
as_yearmonth("2019-05-03")

Coerce an object to year-quarter

Description

as_yearquarter() is a generic for coercing input in to ⁠<grates_yearquarter>⁠. Character input is first parsed using as.Date(). POSIXct and POSIXlt are all converted, with the timezone respected.

Usage

as_yearquarter(x, ...)

## Default S3 method:
as_yearquarter(x, ...)

## S3 method for class 'Date'
as_yearquarter(x, ...)

## S3 method for class 'POSIXt'
as_yearquarter(x, ...)

## S3 method for class 'character'
as_yearquarter(x, ...)

## S3 method for class 'factor'
as_yearquarter(x, ...)

Arguments

x

R object
...

Only used For character input where additional arguments are passed through to as.Date().

Value

A ⁠<grates_yearquarter>⁠ object.

Note

Internally ⁠<grates_yearquarter>⁠ objects are stored as the number of quarters (starting at 0) since the Unix Epoch (1970-01-01).

See Also

as.Date()

Examples

as_yearquarter(Sys.Date())
as_yearquarter(as.POSIXct("2019-03-04 01:01:01", tz = "America/New_York"), interval = 2)
as_yearquarter("2019-05-03")

Coerce to a yearweek object

Description

Generic for conversion to <grates_yearweek>.

Usage

as_yearweek(x, ...)

## Default S3 method:
as_yearweek(x, ...)

## S3 method for class 'Date'
as_yearweek(x, firstday = 1L, ...)

## S3 method for class 'POSIXt'
as_yearweek(x, firstday = 1L, ...)

## S3 method for class 'character'
as_yearweek(
  x,
  firstday = 1L,
  format,
  tryFormats = c("%Y-%m-%d", "%Y/%m/%d"),
  ...
)

## S3 method for class 'factor'
as_yearweek(
  x,
  firstday = 1L,
  format,
  tryFormats = c("%Y-%m-%d", "%Y/%m/%d"),
  ...
)

Arguments

x

R object.
...

Other values passed to as.Date().
firstday

⁠[integer]⁠

The day the week starts on from 1 (Monday) to 7 (Sunday).
format

⁠[character]⁠

Passed to as.Date() unless format = "yearweek" in which case input is assumed to be in the form "YYYY-Wxx".

If not specified, it will try tryFormats one by one on the first non-NA element, and give an error if none works. Otherwise, the processing is via strptime() whose help page describes available conversion specifications.
tryFormats

⁠[character]⁠

Format strings to try if format is not specified.

Details

  • Date, POSIXct, and POSIXlt are converted with the timezone respected.

  • Character objects are first coerced to date via as.Date() unless format = "yearweek" in which case input is assumed to be in the form "YYYY-Wxx" and parsed accordingly.

Value

A ⁠<grates_yearweek>⁠ object.

See Also

as.Date() and new_yearweek().

Examples

as_yearweek(Sys.Date())
as_yearweek(as.POSIXct("2019-03-04 01:01:01", tz = "America/New_York"))
as_yearweek("2019-05-03", firstday = 5L)
as_yearweek("2019-W12", format = "yearweek")

Access the start (end) dates of a grates vector

Description

Utility functions for accessing the start (end) dates for each element of a grates object and also checking whether a date is contained within that range

Usage

date_start(x)

date_end(x)

date %during% x

Arguments

x

grouped date vector.
date

A scalar ⁠<date>⁠ object.

Value

For date_start and date_end The requested start (end) dates for each element in the input. For ⁠%during%⁠ a logical vector indicating whether the date was present within the range of the tested object.

Examples

dates <- as.Date("2020-01-01") + 1:14

week <- as_isoweek(dates)
date_start(week)
date_end(week)
dates[1L] %during% week

period <- as_period(dates, n = 3)
date_start(period)
date_end(period)
dates[14L] %during% period

Constructor for epiweek objects

Description

epiweek() is a constructor for ⁠<grates_epiweek>⁠ objects.

Usage

epiweek(year = integer(), week = integer())

Arguments

year

⁠[integer]⁠

Vector representing the year associated with week.

double vectors will be converted via as.integer(floor(x)).
week

⁠[integer]⁠

Vector representing the week associated with 'year.

double vectors will be converted via as.integer(floor(x)).

Details

Epiweeks are defined to start on a Sunday and ⁠<grates_epiweek>⁠ objects are stored as the number of weeks (starting at 0) from the first Sunday after the Unix Epoch (1970-01-01). That is, the number of seven day periods from 1970-01-04.

Internally they have the same representation as a ⁠<grates_yearweek_sunday>⁠ object so are akin to an alias but with a marginally more efficient implementation.

Value

A ⁠<grates_epiweek>⁠ object.

See Also

as_epiweek() and new_epiweek().

Examples

epiweek(year = 2000L, week = 3L)

Accessors for grate objects

Description

Generics and methods for accessing information about grouped date objects.

Usage

get_firstday(x, ...)

## Default S3 method:
get_firstday(x, ...)

## S3 method for class 'grates_yearweek_monday'
get_firstday(x, ...)

## S3 method for class 'grates_yearweek_tuesday'
get_firstday(x, ...)

## S3 method for class 'grates_yearweek_wednesday'
get_firstday(x, ...)

## S3 method for class 'grates_yearweek_thursday'
get_firstday(x, ...)

## S3 method for class 'grates_yearweek_friday'
get_firstday(x, ...)

## S3 method for class 'grates_yearweek_saturday'
get_firstday(x, ...)

## S3 method for class 'grates_yearweek_sunday'
get_firstday(x, ...)

get_week(x, ...)

## Default S3 method:
get_week(x, ...)

## S3 method for class 'grates_yearweek'
get_week(x, ...)

## S3 method for class 'grates_epiweek'
get_week(x, ...)

## S3 method for class 'grates_isoweek'
get_week(x, ...)

get_year(x, ...)

## Default S3 method:
get_year(x, ...)

## S3 method for class 'grates_yearweek'
get_year(x, ...)

## S3 method for class 'grates_epiweek'
get_year(x, ...)

## S3 method for class 'grates_isoweek'
get_year(x, ...)

## S3 method for class 'grates_yearmonth'
get_year(x, ...)

## S3 method for class 'grates_yearquarter'
get_year(x, ...)

## S3 method for class 'grates_year'
get_year(x, ...)

get_n(x, ...)

## Default S3 method:
get_n(x, ...)

## S3 method for class 'grates_month'
get_n(x, ...)

## S3 method for class 'grates_period'
get_n(x, ...)

get_offset(x, ...)

## Default S3 method:
get_offset(x, ...)

## S3 method for class 'grates_period'
get_offset(x, ...)

Arguments

x

R object
...

Not currently used

Value

Requested value or an error if no method available.

Examples

dates <- as.Date("2020-01-01") + 1:14
dat <- as_isoweek(dates)
get_week(dat)
get_year(dat)

Constructor for isoweek objects

Description

isoweek() is a constructor for ⁠<grates_isoweek>⁠ objects.

Usage

isoweek(year = integer(), week = integer())

Arguments

year

⁠[integer]⁠

Vector representing the year associated with week.

double vectors will be converted via as.integer(floor(x)).
week

⁠[integer]⁠

Vector representing the week associated with 'year.

double vectors will be converted via as.integer(floor(x)).

Details

isoweeks are defined to start on a Monday and ⁠<grates_isoweek>⁠ objects are stored as the number of weeks (starting at 0) from the first Monday prior to the Unix Epoch (1970-01-01). That is, the number of seven day periods from 1969-12-29.

Internally they have the same representation as a ⁠<grates_yearweek_monday>⁠ object so are akin to an alias but with a marginally more efficient implementation.

Value

A ⁠<grates_isoweek>⁠ object.

See Also

as_isoweek() and new_isoweek().

Examples

isoweek(year = 2000L, week = 3L)

Minimal constructor for an epiweek object

Description

new_epiweek() is a constructor for ⁠<grates_epiweek>⁠ objects aimed at developers.

Usage

new_epiweek(x = integer())

is_epiweek(xx)

Arguments

x

⁠[integer]⁠

Vector representing the number of weeks.

double vectors will be converted via as.integer(floor(x)).
xx

R object.

Details

Epiweeks are defined to start on a Sunday and ⁠<grates_epiweek>⁠ objects are stored as the number of weeks (starting at 0) from the first Sunday after the Unix Epoch (1970-01-01). That is, the number of seven day periods from 1970-01-04.

Internally they have the same representation as a ⁠<grates_yearweek_sunday>⁠ object so are akin to an alias but with a marginally more efficient implementation.

Value

A ⁠<grates_epiweek>⁠ object.

See Also

new_yearweek() and new_isoweek().

Examples

new_epiweek(1:10)

Minimal constructor for an isoweek object

Description

new_isoweek() is a constructor for ⁠<grates_isoweek>⁠ objects aimed at developers.

Usage

new_isoweek(x = integer())

is_isoweek(xx)

Arguments

x

⁠[integer]⁠

Vector representing the number of weeks.

double vectors will be converted via as.integer(floor(x)).
xx

R object.

Details

isoweeks are defined to start on a Monday and ⁠<grates_isoweek>⁠ objects are stored as the number of weeks (starting at 0) from the first Monday prior to the Unix Epoch (1970-01-01). That is, the number of seven day periods from 1969-12-29.

Internally they have the same representation as a ⁠<grates_yearweek_monday>⁠ object so are akin to an alias but with a marginally more efficient implementation.

Value

A ⁠<grates_isoweek>⁠ object.

See Also

new_yearweek() and new_epiweek().

Examples

new_isoweek(1:10)

Minimal Constructor for a month object

Description

new_month() is a constructor for ⁠<grates_month>⁠ objects aimed at developers.

Usage

new_month(x = integer(), n)

is_month(xx)

Arguments

x

⁠[integer]⁠

Vector representing the number of n-months since the Unix Epoch (1970-01-01).

double vectors will be converted via as.integer(floor(x)).
n

⁠[integer]⁠

Number of months that are being grouped. Must be greater than 1 (use yearmonth() for this case).
xx

R object.

Details

grates_month objects are stored as the integer number (starting at 0), of n-month groups since the Unix Epoch (1970-01-01). Here n-months is taken to mean a 'grouping of n consecutive months'.

Value

A ⁠<grates_month>⁠ object.

References

The algorithm to convert between dates and months relative to the UNIX Epoch comes from the work of Davis Vaughan in the unreleased datea package.

Examples

new_month(1:10, 2L)

Minimal constructor for a period object

Description

new_period() is a constructor for ⁠<grates_period>⁠ objects aimed at developers.

Usage

new_period(x = integer(), n = 1L, offset = 0L)

is_period(xx)

Arguments

x

⁠[integer]⁠

Vector representing the number of periods since the Unix Epoch (1970-01-01) and a specified offset.

double vectors will be converted via as.integer(floor(x)).
n

⁠[integer]⁠

Number of days that are being grouped by.
offset

⁠[integer]⁠

Value you wish to start counting groups from relative to the Unix Epoch.
xx

R object.

Details

grates_period objects are stored as the integer number, starting at 0L, of periods since the Unix Epoch (1970-01-01) and a specified offset. Here periods are taken to mean groupings of n consecutive days.

For storage and calculation purposes, offset is scaled relative to n. I.e. offset <- offset %% n and values of x stored relative to this scaled offset.

Value

A ⁠<grates_period>⁠ object.

Examples

new_period(1:10)

Minimal constructor for a yearmonth object

Description

new_yearmonth() is a constructor for ⁠<grates_yearmonth>⁠ objects aimed at developers.

Usage

new_yearmonth(x = integer())

is_yearmonth(xx)

Arguments

x

⁠[integer]⁠

Vector representing the number of months.

double vectors will be converted via as.integer(floor(x)).
xx

R object

Details

⁠<grates_yearmonth>⁠ objects are stored as the number of months (starting at 0) since the Unix Epoch (1970-01-01). Precision is only to the month level (i.e. the day of the month is always dropped).

Value

A ⁠<grates_yearmonth>⁠ object.

References

The algorithm to convert between dates and months relative to the UNIX Epoch comes from the work of Davis Vaughan in the unreleased datea package

Examples

new_yearmonth(1:10)

Minimal constructor for a yearquarter object

Description

new_yearquarter() is a constructor for ⁠<grates_yearquarter>⁠ objects aimed at developers.

Usage

new_yearquarter(x = integer())

is_yearquarter(xx)

Arguments

x

⁠[integer]⁠

Vector representing the number of quarters.

double vectors will be converted via as.integer(floor(x)).
xx

R object.

Details

⁠<yearquarter>⁠ objects are stored as the number of quarters (starting at 0) since the Unix Epoch (1970-01-01).

Value

A ⁠<grates_yearquarter>⁠ object.

Examples

new_yearquarter(1:10)

Minimal constructor for a yearweek object

Description

new_yearweek() is a constructor for ⁠<grates_yearweek>⁠ objects aimed at developers.

Usage

new_yearweek(x = integer(), firstday = 1L)

is_yearweek(xx)

Arguments

x

⁠[integer]⁠

Vector representing the number of weeks.

double vectors will be converted via as.integer(floor(x)).
firstday

⁠[integer]⁠

The day the week starts on from 1 (Monday) to 7 (Sunday).
xx

R object.

Details

⁠<grates_yearweek>⁠ objects are stored as the number of weeks (starting at 0) from the date of the firstday nearest the Unix Epoch (1970-01-01). That is, the number of seven day periods from: 

- 1969-12-29 for `firstday` equal to 1 (Monday)
- 1969-12-30 for `firstday` equal to 2 (Tuesday)
- 1969-12-31 for `firstday` equal to 3 (Wednesday)
- 1970-01-01 for `firstday` equal to 4 (Thursday)
- 1970-01-02 for `firstday` equal to 5 (Friday)
- 1970-01-03 for `firstday` equal to 6 (Saturday)
- 1970-01-04 for `firstday` equal to 7 (Sunday)

Value

A ⁠<grates_yearweek>⁠ object with subclass corresponding to the first day of the week they represent (e.g. ⁠<grates_yearweek_monday>⁠).

See Also

as_yearweek(), new_isoweek() and new_epiweek().

Examples

new_yearweek(1:10)

Print a month object

Description

Print a month object

Usage

## S3 method for class 'grates_month'
print(x, format = "%Y-%b", sep = "to", ...)

## S3 method for class 'grates_month'
format(x, format = "%Y-%b", sep = "to", ...)

Arguments

x

A ⁠<grates_month>⁠ object.
format

⁠[character]⁠

The format to use for the bounds of each value.
sep

⁠[character]⁠

Where more than one month is grouped with others, sep is placed between the upper and lower bounds when printing.
...

Not currently used.

Print a period object

Description

Print a period object

Usage

## S3 method for class 'grates_period'
print(x, format = "%Y-%m-%d", sep = "to", ...)

## S3 method for class 'grates_period'
format(x, format = "%Y-%m-%d", sep = "to", ...)

Arguments

x

A ⁠<grates_period>⁠ object.
format

⁠[character]⁠

The format to use for the bounds of each value.
sep

⁠[character]⁠

Where more than one day is grouped with others, sep is placed between the upper and lower bounds when printing.
...

Not currently used.

Print a year-quarter object

Description

Print a year-quarter object

Usage

## S3 method for class 'grates_year'
print(x, ...)

## S3 method for class 'grates_year'
format(x, ...)

Arguments

x

A ⁠<grates_year>⁠ object.
...

Not currently used.

Print a year-month object

Description

Print a year-month object

Usage

## S3 method for class 'grates_yearmonth'
print(x, format = "%Y-%b", ...)

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

Arguments

x

A ⁠<grates_yearmonth>⁠ object.
format

The format to use for printing.
...

Not currently used.

Print a year-quarter object

Description

Print a year-quarter object

Usage

## S3 method for class 'grates_yearquarter'
print(x, ...)

## S3 method for class 'grates_yearquarter'
format(x, ...)

Arguments

x

A ⁠<grates_yearquarter>⁠ object.
...

Not currently used.

epiweek scale

Description

ggplot2 scale for an ⁠<grates_epiweek>⁠ vector.

Usage

scale_x_grates_epiweek(
  ...,
  breaks = ggplot2::waiver(),
  n.breaks = 6L,
  format = NULL
)

Arguments

...

Not currently used.
breaks

A ⁠<grates_epiweek>⁠ vector of the desired breaks.
n.breaks

⁠[integer]⁠

Approximate number of breaks calculated using scales::breaks_pretty (default 6L).

Will only have an effect if breaks = waiver().
format

Format to use if "Date" scales are required.

If NULL (default) then labels are in the standard yearweek format (YYYY-Www).

If not NULL then the value is used by format.Date() and can be any input acceptable by that function.

Value

A scale for use with ggplot2.

isoweek scale

Description

ggplot2 scale for an ⁠<grates_isoweek>⁠ vector.

Usage

scale_x_grates_isoweek(
  ...,
  breaks = ggplot2::waiver(),
  n.breaks = 6L,
  format = NULL
)

Arguments

...

Not currently used.
breaks

A ⁠<grates_isoweek>⁠ vector of the desired breaks.
n.breaks

⁠[integer]⁠

Approximate number of breaks calculated using scales::breaks_pretty (default 6L).

Will only have an effect if breaks = waiver().
format

Format to use if "Date" scales are required.

If NULL (default) then labels are in the standard yearweek format (YYYY-Www).

If not NULL then the value is used by format.Date() and can be any input acceptable by that function.

Value

A scale for use with ggplot2.

month scale

Description

ggplot2 scale for a month vector.

Usage

scale_x_grates_month(
  ...,
  breaks = ggplot2::waiver(),
  n.breaks = 6L,
  format = "%Y-%m-%d",
  bounds_format = "%Y-%b",
  sep = "to",
  n
)

Arguments

...

Not currently used.
breaks

A ⁠<grates_month>⁠ vector of the desired breaks.
n.breaks

⁠[integer]⁠

Approximate number of breaks calculated using scales::breaks_pretty (default 6L).

Will only have an effect if breaks = waiver().
format

Format to use if "Date" scales are required.

If NULL then labels are centralised and of the form "lower category bound to upper category bound".

If not NULL then the value is used by format.Date() and can be any input acceptable by that function (defaults to "%Y-%m-%d).
bounds_format

Format to use for grouped date labels. Only used if format is NULL.
sep

⁠[character]⁠

Separator to use for grouped date labels.
n

⁠[integer]⁠

Number of months used for the original grouping.

Value

A scale for use with ggplot2.

period scale

Description

ggplot2 scale for an ⁠<grates_period>⁠ vector.

Usage

scale_x_grates_period(
  ...,
  breaks = ggplot2::waiver(),
  n.breaks = 6L,
  format = "%Y-%m-%d",
  n,
  offset
)

Arguments

...

Not currently used.
breaks

A ⁠<grates_period>⁠ vector of the desired breaks.
n.breaks

⁠[integer]⁠

Approximate number of breaks calculated using scales::breaks_pretty (default 6L).

Will only have an effect if breaks = waiver().
format

Format to use for dates.

Value is used by format.Date() and can be any input acceptable by that function.
n

⁠[integer]⁠

Number of days in each period.
offset

⁠[integer]⁠

Number of days used in original grouping for the offset from the Unix Epoch.

Value

A scale for use with ggplot2.

year scale

Description

ggplot2 scale for year vector.

Usage

scale_x_grates_year(
  ...,
  breaks = ggplot2::waiver(),
  n.breaks = 6L,
  format = NULL
)

Arguments

...

Not currently used.
breaks

A ⁠<grates_isoweek>⁠ vector of the desired breaks.
n.breaks

⁠[integer]⁠

Approximate number of breaks calculated using scales::breaks_pretty (default 6L).

Will only have an effect if breaks = waiver().
format

Format to use if "Date" scales are required.

If not NULL then the value is used by format.Date() and can be any input acceptable by that function.

Value

A scale for use with ggplot2.

yearmonth scale

Description

ggplot2 scale for a yearmonth vector.

Usage

scale_x_grates_yearmonth(
  ...,
  breaks = ggplot2::waiver(),
  n.breaks = 6L,
  format = NULL
)

Arguments

...

Not currently used.
breaks

A ⁠<grates_yearmonth>⁠ vector of the desired breaks.
n.breaks

⁠[integer]⁠

Approximate number of breaks calculated using scales::breaks_pretty (default 6L).

Will only have an effect if breaks = waiver().
format

Format to use if "Date" scales are required.

If not NULL then the value is used by format.Date() and can be any input acceptable by that function.

Value

A scale for use with ggplot2.

yearquarter scale

Description

ggplot2 scale for a yearquarter vector.

Usage

scale_x_grates_yearquarter(
  ...,
  breaks = ggplot2::waiver(),
  n.breaks = 6L,
  format = NULL
)

Arguments

...

Not currently used.
breaks

A ⁠<grates_yearquarter>⁠ vector of the desired breaks.
n.breaks

⁠[integer]⁠

Approximate number of breaks calculated using scales::breaks_pretty (default 6L).

Will only have an effect if breaks = waiver().
format

Format to use if "Date" scales are required.

If not NULL then the value is used by format.Date() and can be any input acceptable by that function.

Value

A scale for use with ggplot2.

yearweek scale

Description

ggplot2 scale for an ⁠<grates_yearweek>⁠ vector.

Usage

scale_x_grates_yearweek(
  ...,
  breaks = ggplot2::waiver(),
  n.breaks = 6L,
  firstday,
  format = NULL
)

scale_x_grates_yearweek_monday(
  ...,
  breaks = ggplot2::waiver(),
  n.breaks = 6,
  format = NULL
)

scale_x_grates_yearweek_isoweek(
  ...,
  breaks = ggplot2::waiver(),
  n.breaks = 6,
  format = NULL
)

scale_x_grates_yearweek_tuesday(
  ...,
  breaks = ggplot2::waiver(),
  n.breaks = 6,
  format = NULL
)

scale_x_grates_yearweek_wednesday(
  ...,
  breaks = ggplot2::waiver(),
  n.breaks = 6,
  format = NULL
)

scale_x_grates_yearweek_thursday(
  ...,
  breaks = ggplot2::waiver(),
  n.breaks = 6,
  format = NULL
)

scale_x_grates_yearweek_friday(
  ...,
  breaks = ggplot2::waiver(),
  n.breaks = 6,
  format = NULL
)

scale_x_grates_yearweek_saturday(
  ...,
  breaks = ggplot2::waiver(),
  n.breaks = 6,
  format = NULL
)

scale_x_grates_yearweek_sunday(
  ...,
  breaks = ggplot2::waiver(),
  n.breaks = 6,
  format = NULL
)

scale_x_grates_yearweek_epiweek(
  ...,
  breaks = ggplot2::waiver(),
  n.breaks = 6,
  format = NULL
)

Arguments

...

Not currently used.
breaks

A ⁠<grates_yearweek>⁠ vector of the desired breaks.
n.breaks

⁠[integer]⁠

Approximate number of breaks calculated using scales::breaks_pretty (default 6L).

Will only have an effect if breaks = waiver().
firstday

⁠[integer]⁠

Integer value of the first weekday: 1 (Monday) to 7 (Sunday).
format

Format to use if "Date" scales are required.

If NULL (default) then labels are in the standard yearweek format (YYYY-Www).

If not NULL then the value is used by format.Date() and can be any input acceptable by that function.

Value

A scale for use with ggplot2.

Construct a year object

Description

year() is a constructor for ⁠<grates_year>⁠ objects.

Usage

year(x = integer())

is_year(object)

Arguments

x

⁠[integer]⁠

Vector representing the years.

double vectors will be converted via as.integer(floor(x)).
object

R object.

Value

A ⁠<grates_year>⁠ object.

Examples

year(2011:2020)

Constructor for yearmonth objects

Description

yearmonth() is a constructor for ⁠<grates_yearmonth>⁠ objects.

Usage

yearmonth(year = integer(), month = integer())

Arguments

year

⁠[integer]⁠

Vector representing the year associated with month.

double vectors will be converted via as.integer(floor(x)).
month

⁠[integer]⁠

Vector representing the month associated with 'year.

double vectors will be converted via as.integer(floor(x)).

Details

⁠<grates_yearmonth>⁠ objects are stored as the number of months (starting at 0) since the Unix Epoch (1970-01-01).

Value

A ⁠<grates_yearmonth>⁠ object.

See Also

as_yearmonth() and new_yearmonth().

Examples

yearmonth(year = 2000L, month = 3L)

Constructor for yearquarter objects

Description

yearquarter() is a constructor for ⁠<grates_yearquarter>⁠ objects.

Usage

yearquarter(year = integer(), quarter = integer())

Arguments

year

⁠[integer]⁠

Vector representing the year associated with quarter.

double vectors will be converted via as.integer(floor(x)).
quarter

⁠[integer]⁠

Vector representing the quarter associated with 'year.

double vectors will be converted via as.integer(floor(x)).

Details

⁠<grates_yearquarter>⁠ objects are stored as the number of quarters (starting at 0) since the Unix Epoch (1970-01-01).

Value

A ⁠<grates_yearquarter>⁠ object.

See Also

as_yearquarter() and new_yearquarter().

Examples

yearquarter(year = 2000L, quarter = 3L)

Constructor for yearweek objects

Description

yearweek() is a constructor for ⁠<grates_yearweek>⁠ objects. These are weeks whose first day can be specified by the user.

Usage

yearweek(year = integer(), week = integer(), firstday = 1L)

Arguments

year

⁠[integer]⁠

Vector representing the year associated with week.

double vectors will be converted via as.integer(floor(x)).
week

⁠[integer]⁠

Vector representing the week associated with 'year.

double vectors will be converted via as.integer(floor(x)).
firstday

⁠[integer]⁠

The day the week starts on from 1 (Monday) to 7 (Sunday).

Details

For yearweek objects the first week of a "year" is considered to be the first yearweek containing 4 days of the given calendar year. This means that the calendar year will sometimes be different to that of the associated yearweek object.

Value

A ⁠<grates_yearweek>⁠ object with subclass corresponding to the first day of the week they represent (e.g. ⁠<grates_yearweek_monday>⁠).

Note

Internally ⁠<grates_yearweek>⁠ objects are stored as the number of weeks (starting at 0) from the date of the firstday nearest the Unix Epoch (1970-01-01). That is, the number of seven day periods from: 

- 1969-12-29 for `firstday` equal to 1 (Monday)
- 1969-12-30 for `firstday` equal to 2 (Tuesday)
- 1969-12-31 for `firstday` equal to 3 (Wednesday)
- 1970-01-01 for `firstday` equal to 4 (Thursday)
- 1970-01-02 for `firstday` equal to 5 (Friday)
- 1970-01-03 for `firstday` equal to 6 (Saturday)
- 1970-01-04 for `firstday` equal to 7 (Sunday)

See Also

as_yearweek() and new_yearweek().

Examples

yearweek(year = 2000L, week = 3L)