timetools (version 1.1-2)

year: Extract time properties from POSIX* objects

Description

Objects can be POSIXct, POSIXcti, POSIXctp, etc.

Usage

year(x, ...)
  month(x, ...)
  day(x, of, ..., first.day = 0)
  hour(x, of, ...)
  minute(x, of, ...)
  second(x, of, ...)
  unit(x, ...)
  unit(object) <- value
  duration(x, ...)

Arguments

x

object from which the property is to be extracted (POSIXct, POSIXcti, POSIXctp)

of

used to specify the main period from wich the time propertie is to extract. For instance : day(x, 'week') will differ from day(x, 'year').

...

arguments to or from other methods

object

POSIXctp to which the unit is to be changed

value

a character or a POSIXt.units indicating the new units of object. The conversion will be effective only if it makes sense (hour to second, ok ; year

first.day

used only if representation == 'wday'. Interger indicating the first day of the week. 0 -> sunday (the default), 1 -> monday, 2 -> tuesday, etc.

Details

year, month, day, hour, minute and second are methods defined to extract the adequat information from a time object.

unit unit<- is used to extract or set the unit of a time object (cf POSIXt.units).