POSIXct {fame} | R Documentation |
Functions to create objects of classes "POSIXlt"
and
"POSIXct"
representing calendar dates and times.
POSIXct(x, ...) POSIXlt(x, ...) ## S3 method for class 'jul': POSIXct(x, ...) ## S3 method for class 'ti': POSIXct(x, offset = 1, ...) ## Default S3 method: POSIXct(x, ...) ## S3 method for class 'jul': POSIXlt(x, ...) ## S3 method for class 'ti': POSIXlt(x, ...) ## Default S3 method: POSIXlt(x, ...)
x |
An object to be converted. |
offset |
a number between 0 and 1 specifying where in the period
represented by the ti object x the desired time falls.
offset = 1 gives the first second of the period and
offset = 1 the last second, offset = 0.5 the middle
second, and so on. |
... |
other args passed to ISOdatetime (POSIXct.jul and
POSIXct.ti ), as.POSIXct or as.POSIXlt as
appropriate. May include a tz argument to specify a
timezone, if one is required. System-specific, but ""
is the current timezone, and "GMT" is UTC (Coordinated
Universal Time, in French).
|
The default methods POSIXct.default
and POSIXlt.default
do nothing but call as.POSIXct
and as.POSIXlt
,
respectively. The POSIXct.ti
method can take an offset
argument as explained above, and the POSIXct.jul
method can
handle jul
objects with a fractional part. The ti
and
jul
methods for POSIXlt
just call the POSIXct
constructor and then convert it's value to a POSIXlt
object.
POSIXct
and POSIXlt
return objects of the
appropriate class. If tz
was specified it will be reflected in
the "tzone" attribute of the result.
Jeff Hallman
as.POSIXct
and link{as.POSIXlt}
for the default
conversion functions, and DateTimeClasses for details of the
classes.