The R Project SVN R

Rev

Rev 59039 | Rev 64623 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
51359 ripley 1 
% File src/library/base/man/ISOdatetime.Rd
42333 ripley 2 
% Part of the R package, http://www.R-project.org
59039 ripley 3 
% Copyright 1995-2011 R Core Team
42333 ripley 4 
% Distributed under GPL 2 or later
5 
 
51359 ripley 6 
\name{ISOdatetime}
56186 murdoch 7 
\alias{ISOdatetime}
10543 ripley 8 
\alias{ISOdate}
51359 ripley 9 
\title{Date-time Conversion Functions from Numeric Representations}
10543 ripley 10 
\description{
57895 ripley 11 
  Convenience wrappers to create date-times from numeric representations.
10543 ripley 12 
}
25384 ripley 13 
\usage{
10543 ripley 14 
ISOdatetime(year, month, day, hour, min, sec, tz = "")
15 
ISOdate(year, month, day, hour = 12, min = 0, sec = 0, tz = "GMT")
16 
}
17 
\arguments{
18 
  \item{year, month, day}{numerical values to specify a day.}
37470 ripley 19 
  \item{hour, min, sec}{numerical values for a time within a day.
20 
    Fractional seconds are allowed.}
51359 ripley 21 
  \item{tz}{A \link{timezone} specification to be used for the conversion.
22 
    \code{""} is the current time zone and \code{"GMT"} is UTC.}
10543 ripley 23 
}
24 
\details{
25 
  \code{ISOdatetime} and \code{ISOdate} are convenience wrappers for
51359 ripley 26 
  \code{strptime} that differ only in their defaults and that
27 
  \code{ISOdate} sets UTC as the timezone.  For dates without times it
28 
  would normally be better to use the \code{"\link{Date}"} class.
61433 ripley 29 
 
57895 ripley 30 
  The main arguments will be recycled using the usual recycling rules.
10543 ripley 31 
}
32 
\value{
51359 ripley 33 
  An object of class \code{"\link{POSIXct}"}.
10543 ripley 34 
}
35 
\seealso{
10854 hornik 36 
  \link{DateTimeClasses} for details of the date-time classes;
51359 ripley 37 
  \code{\link{strptime}} for conversions from character strings.
10543 ripley 38 
}
39 
\keyword{utilities}
40 
\keyword{chron}