| cut.POSIXt {base} | R Documentation |
Method for cut applied to date-time objects.
## S3 method for class 'POSIXt':
cut(x, breaks, labels = NULL, start.on.monday = TRUE,
right = FALSE, ...)
## S3 method for class 'Date':
cut(x, breaks, labels = NULL, start.on.monday = TRUE,
right = FALSE, ...)
x |
an object inheriting from class "POSIXt" or "Date". |
breaks |
a vector of cut points or number giving the number of
intervals which x is to be cut into or an
interval specification, one of "sec", "min",
"hour", "day", "DSTday", "week",
"month" or "year", optionally preceded by an integer
and a space, or followed by "s". For "Date" objects
only "day", "week", "month" and "year"
are allowed.
|
labels |
labels for the levels of the resulting category. By default,
labels are constructed from the left-hand end of the intervals
(which are include for the default value of right). If
labels = FALSE, simple integer codes are returned instead
of a factor.
|
start.on.monday |
logical. If breaks = "weeks", should the
week start on Mondays or Sundays? |
right, ... |
arguments to be passed to or from other methods. |
Using both right = TRUE and include.lowest = TRUE
will include both ends of the range of dates.
A factor is returned, unless labels = FALSE which returns
the integer level codes.
## random dates in a 10-week period
cut(ISOdate(2001, 1, 1) + 70*86400*runif(100), "weeks")
cut(as.Date("2001/1/1") + 70*runif(100), "weeks")