tsibble (version 0.5.3)

yearweek: Represent year-week (ISO), year-month or year-quarter objects

Description

Create or coerce using yearweek(), yearmonth(), or yearquarter()

Usage

yearweek(x)
is_53weeks(year)
yearmonth(x)
yearquarter(x)

Arguments

x

Other object.

year

A vector of years.

Value

Year-week (yearweek), year-month (yearmonth) or year-quarter (yearquarter) objects.

TRUE/FALSE if the year has 53 ISO weeks.

Index functions

The tsibble yearmonth() and yearquarter() function preserve the time zone of the input x, contrasting to their zoo counterparts.

Details

It's a known issue that these attributes will be dropped when using group_by and mutate together. It is recommended to ungroup first, and then use mutate.

See Also

pull_interval

Examples

# NOT RUN {
# coerce POSIXct/Dates to yearweek, yearmonth, yearquarter ----
x <- seq(as.Date("2016-01-01"), as.Date("2016-12-31"), by = "1 month")
yearweek(x)
yearmonth(yearweek(x)); yearmonth(x)
yearmonth("201807")
yearquarter(x)

# coerce yearmonths to yearquarter ----
y <- yearmonth(x)
yearquarter(y)

# seq() and binary operaters ----
wk1 <- yearweek("2017-11-01")
wk2 <- yearweek("2018-04-29")
seq(from = wk1, to = wk2, by = 2) # by two weeks
wk1 + 0:9
mth <- yearmonth("2017-11-01")
seq(mth, length.out = 5, by = 1) # by 1 month
mth + 0:9
seq(yearquarter(mth), length.out = 5, by = 1) # by 1 quarter
is_53weeks(2015:2016)
# }