diff_time | R Documentation |
Wrappers for computing diff times
diff_time(
x,
y,
method = c("secs", "mins", "hours", "days", "weeks", "months", "years", "dyears",
"wyears", "myears"),
tzx = NULL,
tzy = tzx
)
diff_time_days(x, y, ...)
diff_time_weeks(x, y, ...)
diff_time_hours(x, y, ...)
diff_time_mins(x, y, ...)
diff_time_secs(x, y, ...)
diff_time_months(x, y, ...)
diff_time_years(x, y, ...)
diff_time_dyears(x, y, ...)
diff_time_wyears(x, y, ...)
diff_time_myears(x, y, ...)
x , y |
Vectors of times |
method |
A method to report the difference in units of time (see Units section) |
tzx , tzy |
time zones (see Time zones section) |
... |
Additional arguments passed to |
A few significant differences exist with these functions * The class
of the object returned is no longer difftime
(but does print) with the
difftime
method. This makes the exporting process easier as the data
will not have to be converted back to numeric
* difftime()
computes the
difference of time1
- time2
, but the inverse feels a bit more nature:
time difference from x
to y
* Additional units can be used (detailed
below) * Differences can be sensitive to time zones if time zones are
passed to the tz
parameter as a character vector
A diff_time
vector, object
Units can be used beyond those available in
base::difftime()
. Some of these use assumptions in how units of time
should be standardized and can be changed in the corresponding options. Any
of these can be calculated with base::difftime()
through using units = "days"
but the dtime
class will print out with these specifications into
the console for less potential confusion.
Months by number of days mark.days_in_month
(defaults: 30
)
Years by number of days mark.days_in_year
(defaults: 365
)
Years by number of days mark.days_in_year
(defaults: 365
) (same as years
)
Years by number of days in a month mark.days_in_month
(defaults: 30
)
Years by number of weeks in a year mark.weeks_in_year
(defaults: 52
)
Time zones can be passed as either a numeric vector of
GMT/UTC offsets (the number of seconds from GMT) or as a character vector.
If the letter, these need to conform with values from base::OlsonNames()
.
A default timezone can be set with options(mark.default_tz = .)
. The
value can either be a numeric
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