ISOdatetime

Convenience wrappers to create date-times from numeric representations.

Syntax

R Copy

ISOdatetime(year, month, day, hour, min, sec, tz = "")
ISOdate(year, month, day, hour = 12, min = 0, sec = 0, tz = "GMT")

Arguments

Parameter	Description
year, month, day	numerical values to specify a day.
hour, min, sec	numerical values for a time within a day. Fractional seconds are allowed.
tz	A time zone specification to be used for the conversion. "" is the current time zone and "GMT" is UTC. Invalid values are most commonly treated as UTC, on some platforms with a warning.

Return Value

An object of class "POSIXct".

Details

ISOdatetime and ISOdate are convenience wrappers for strptime that differ only in their defaults and that ISOdate sets UTC as the time zone. For dates without times it would normally be better to use the "Date" class. The main arguments will be recycled using the usual recycling rules. Because these make use of strptime, only years in the range 0:9999 are accepted.

See Also

DateTimeClasses for details of the date-time classes; strptime for conversions from character strings.