| diff {timeDate} | R Documentation |
Returns suitably lagged and iterated differences.
## S3 method for class 'timeDate' diff(x, lag = 1, differences = 1, ...)
x |
an object of class |
lag |
an integer indicating which lag to use. |
differences |
an integer indicating the order of the difference. |
... |
arguments passed to other methods. |
For the function, diff.timeDate, if x is a vector
of length n and differences=1, then the computed result
is equal to the successive differences x[(1+lag):n] - x[1:(n-lag)].
If difference is larger than one this algorithm is applied
recursively to x. Note that the returned value is a vector
which is shorter than x.
## Create Character Vectors:
dts = c("1989-09-28", "2001-01-15", "2004-08-30", "1990-02-09")
dts
tms = c( "23:12:55", "10:34:02", "08:30:00", "11:18:23")
tms
## timeDate -
GMT = timeDate(dts, zone = "GMT", FinCenter = "GMT") + 24*3600
GMT
ZUR = timeDate(dts, zone = "GMT", FinCenter = "Europe/Zurich")
ZUR
## diff -
# Suitably Lagged and Iterated Differences:
diff(GMT)
diff(GMT, lag = 2)
diff(GMT, lag = 1, diff = 2)