timeSequence | R Documentation |
Create a regularly spaced object of class "timeDate"
.
timeSequence(from, to = Sys.timeDate(), by, length.out = NULL, format = NULL, zone = "", FinCenter = "") ## S3 method for class 'timeDate' seq(from, to, by, length.out = NULL, along.with = NULL, ...)
from, to |
starting date, required, and end date, optional. If supplied,
|
by |
|
length.out |
integer, optional. Desired length of the sequence, if specified "to" will be ignored. |
along.with |
Take the length from the length of this argument. |
format |
the format specification of the input character vector. |
zone |
the time zone or financial center where the data were recorded. |
FinCenter |
a character with the location of the financial center named as "continent/city". |
... |
arguments passed to other methods. |
an object of class "timeDate"
timeSequence()
is a wrapper for the "timeDate"
method of
seq()
, and that has been closely modeled after base R's
POSIXt
method, seq.POSIXt
.
## timeSequence - ## autodetection of format : (t1 <- timeSequence(from = "2004-03-12", to = "2004-04-11")) stopifnot( ## different formats even: identical(t1, timeSequence(from = "2004-03-12", to = "11-Apr-2004")), identical(t1, ## explicit format and FinCenter : timeSequence(from = "2004-03-12", to = "2004-04-11", format = "%Y-%m-%d", FinCenter = "GMT"))) ## observe "switch to summer time": timeSequence(from = "2004-03-26 05:00:00", to = "2004-04-02 05:00:00", zone = "Europe/Zurich", FinCenter = "Europe/Zurich") ## ensure fixed clock time: timeSequence(from = "2004-03-26 05:00:00", to = "2004-04-01 05:00:00", by = "DSTday", zone = "Europe/Zurich", FinCenter = "Europe/Zurich") ## on the day of DST change the time may not exist (notice 2004-03-28 00:00:00): timeSequence(from = "2004-03-26 01:00:00", to = "2004-04-01 01:00:00", by = "DSTday", zone = "Europe/Zurich", FinCenter = "Europe/Zurich")
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