base-diff: Lagged 'timeDate' differences

In timeDate: Rmetrics - Chronological and Calendar Objects

Lagged 'timeDate' differences

Description

Returns suitably lagged and iterated differences.

Usage

## S3 method for class 'timeDate'
diff(x, lag = 1, differences = 1, ...)  

Arguments

x	an object of class "timeDate".
lag	an integer indicating which lag to use.
differences	an integer indicating the order of the difference.
...	arguments passed to other methods.

Value

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.

See Also

difftimeDate for the difference of two "timeDate" objects.

Examples

## create character vectors
dts <- c("1989-09-28", "2001-01-15", "2004-08-30", "1990-02-09")
tms <- c(  "23:12:55",   "10:34:02",   "08:30:00",   "11:18:23")
## timeDate
GMT <- timeDate(dts, zone = "GMT", FinCenter = "GMT") + 24*3600
GMT

## suitably lagged and iterated differences
diff(GMT)
diff(GMT, lag = 2)
diff(GMT, lag = 1, diff = 2)

timeDate documentation built on Oct. 21, 2025, 3 a.m.