lubridate (version 1.7.0)

day: Get/set days component of a date-time

Description

Get/set days component of a date-time

Usage

day(x)
mday(x)
wday(x, label = FALSE, abbr = TRUE,
  week_start = getOption("lubridate.week.start", 7),
  locale = Sys.getlocale("LC_TIME"))
qday(x)
yday(x)
day(x) <- value
mday(x) <- value
qday(x) <- value
wday(x, week_start = getOption("lubridate.week.start", 7)) <- value
yday(x) <- value

Arguments

x

a POSIXct, POSIXlt, Date, chron, yearmon, yearqtr, zoo, zooreg, timeDate, xts, its, ti, jul, timeSeries, or fts object.

label

logical. Only available for wday. TRUE will display the day of the week as an ordered factor of character strings, such as "Sunday." FALSE will display the day of the week as a number.

abbr

logical. Only available for wday. FALSE will display the day of the week as an ordered factor of character strings, such as "Sunday." TRUE will display an abbreviated version of the label, such as "Sun". abbr is disregarded if label = FALSE.

week_start

day on which week starts following ISO conventions - 1 means Monday, 7 means Sunday (default). You can set lubridate.week.start option to control this parameter globally.

locale

locale to use for day names. Default to current locale.

value

a numeric object

Value

wday() returns the day of the week as a decimal number or an ordered factor if label is TRUE.

Details

day() and day<-() are aliases for mday() and mday<-() respectively.

See Also

yday(), mday()

Examples

# NOT RUN {
x <- as.Date("2009-09-02")
wday(x) #4

wday(ymd(080101))
wday(ymd(080101), label = TRUE, abbr = FALSE)
wday(ymd(080101), label = TRUE, abbr = TRUE)
wday(ymd(080101) + days(-2:4), label = TRUE, abbr = TRUE)

x <- as.Date("2009-09-02")
yday(x) #245
mday(x) #2
yday(x) <- 1  #"2009-01-01"
yday(x) <- 366 #"2010-01-01"
mday(x) > 3
# }