Get/set days component of a date-time
Get/set days component of a date-time
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) <- valuex |
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). When |
locale |
locale to use for day names. Default to current locale. |
value |
a numeric object |
mday() and yday() return the day of the month and day of the
year respectively. day() and day<-() are aliases for mday() and
mday<-().
wday() returns the day of the week as a decimal number or an
ordered factor if label is TRUE.
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) > 3Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.