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Various POSIX utilities

Source: R/POSIXt.r
posix_utils.Rd

POSIXct() mirrors primitive constructors in base R (double(), character() etc.)

Usage

is.POSIXt(x)

is.POSIXlt(x)

is.POSIXct(x)

POSIXct(length = 0L, tz = "UTC")

NA_POSIXct_

Format

An object of class POSIXct (inherits from POSIXt) of length 1.

Arguments

x

an R object

length

A non-negative number specifying the desired length. Supplying an argument of length other than one is an error.

tz

a timezone (defaults to "utc")

Value

TRUE if x is a POSIXct or POSIXlt object, FALSE otherwise.

See also

is.instant(), is.timespan(), is.Date()

Examples

is.POSIXt(as.Date("2009-08-03"))
#> [1] FALSE
is.POSIXt(as.POSIXct("2009-08-03"))
#> [1] TRUE