| what_wday {ds4psy} | R Documentation |
What day of the week is it?
Description
what_wday provides a satisficing version of
to determine the day of the week
corresponding to a given date.
Usage
what_wday(when = Sys.Date(), abbr = FALSE)
Arguments
when |
Date (as a scalar or vector).
Default: |
abbr |
Boolean: Return abbreviated?
Default: |
Details
what_wday returns the name of the weekday
of when or of Sys.Date()
(as a character string).
See Also
what_date() function to obtain dates;
what_time() function to obtain times;
cur_time() function to print the current time;
cur_date() function to print the current date;
now() function of the lubridate package;
Sys.time() function of base R.
Other date and time functions:
change_time(),
change_tz(),
cur_date(),
cur_time(),
days_in_month(),
diff_dates(),
diff_times(),
diff_tz(),
is_leap_year(),
what_date(),
what_month(),
what_time(),
what_week(),
what_year(),
zodiac()
Examples
what_wday()
what_wday(abbr = TRUE)
what_wday(Sys.Date() + -1:1) # Date (as vector)
what_wday(Sys.time()) # POSIXct
what_wday("2020-02-29") # string (of valid date)
what_wday(20200229) # number (of valid date)
# date vector (as characters):
ds <- c("2020-01-01", "2020-02-29", "2020-12-24", "2020-12-31")
what_wday(when = ds)
what_wday(when = ds, abbr = TRUE)
# time vector (strings of POSIXct times):
ts <- c("1969-07-13 13:53 CET", "2020-12-31 23:59:59")
what_wday(ts)
# fame data:
greta_dob <- as.Date(fame[grep(fame$name, pattern = "Greta") , ]$DOB, "%B %d, %Y")
what_wday(greta_dob) # Friday, of course.