year(.data, tz = NULL, discrete = TRUE)
yearquarter(.data, tz = NULL, discrete = TRUE)
yearmonth(.data, tz = NULL, discrete = TRUE)Another object to be coerced into the specified time.
Timezone, defaults to "UTC".
If TRUE, the number of chronons since Unix epoch that
.data falls into is returned as an integer. If FALSE, a fractional number
of chronons is returned (analagous to time using a continuous time model).
Arguments for methods.