stri_datetime_format(time, format = "uuuu-MM-dd HH:mm:ss", tz = NULL,
locale = NULL)stri_datetime_parse(str, format = "uuuu-MM-dd HH:mm:ss", lenient = FALSE,
tz = NULL, locale = NULL)
POSIXct or an object coercible tostri_datetime_fstrNULL or "" for the default time zone
or a single string with a timezone identifier,
see stri_timezone_listNULL or "" for default locale,
or a single string with locale identifier; a non-Gregorian calendar
may be specified by setting the @calendar=name keywordstri_datetime_format returns a character vector.stri_datetime_parse returns an object of class POSIXct.
time or str.By default, stri_datetime_format (unlike format.POSIXst)
formats a date/time object using the current default time zone.
This is for the sake of compatibility with the strftime function.
format may be one of DT_STYLE or DT_relative_STYLE,
where DT is equal to date, time, or datetime,
and STYLE is equal to full, long, medium, or short.
This gives a locale-dependent date and/or time format.
Note that currently relative time formats,
so this flag is currently ignored in such a context.
Otherwise, format is a pattern:
a string, where specific sequences of characters are replaced
with date and time data from a calendar when formatting or used
to generate data for a calendar when parsing.
For example, y stands for the year. Characters
may be used multiple times. For instance, if y is used for the year,
yy might produce 99, whereas yyyy produces 1999.
For most numerical fields, the number of characters specifies
the field width. For example, if h is the hour, h might
produce 5, but hh produces 05.
For some characters, the count specifies whether an abbreviated
or full form should be used, but may have other choices, as given below.
Two single quotes represent a literal single quote, either
inside or outside single quotes. Text within single quotes
is not interpreted in any way (except for two adjacent single quotes).
Otherwise all ASCII letter from a to z and A to Z
are reserved as syntax characters, and require quoting if
they are to represent literal characters. In addition, certain
ASCII punctuation characters may become variable in the future
(eg : being interpreted as the time separator and /
as a date separator, and replaced by respective
locale-sensitive characters in display).
Note that any characters in the pattern that are not in the ranges
of [a-z] and [A-Z] will be treated as quoted text.
For instance, characters like :, ., (a space),
# and @ will appear in the resulting time text
even they are not enclosed within single quotes. The single quote is used
to ``escape'' letters. Two single quotes in a row,
inside or outside a quoted sequence, represent a ``real'' single quote.
Here are some examples:
stri_datetime_add,
stri_datetime_add<-;
stri_datetime_create;
stri_datetime_fields;
stri_datetime_fstr;
stri_datetime_now;
stri_datetime_symbols;
stri_timezone_get,
stri_timezone_set;
stri_timezone_info;
stri_timezone_liststri_datetime_parse(c("2015-02-28", "2015-02-29"), "yyyy-MM-dd")
stri_datetime_parse(c("2015-02-28", "2015-02-29"), "yyyy-MM-dd", lenient=TRUE)
stri_datetime_parse("19 lipca 2015", "date_long", locale="pl_PL")
stri_datetime_format(stri_datetime_now(), "datetime_relative_medium")Run the code above in your browser using DataLab