tind (version 0.2.4)

diff: Lagged Differences for tind and tdiff Objects

Description

diff method for tind and tdiff works in a standard way. For all index types except for integer and numeric indices, differences of time indices are retuned as objects of tdiff class.

Usage

# S3 method for tind
diff(x, lag = 1L, differences = 1L, ...)
# S3 method for tdiff
diff(x, lag = 1L, differences = 1L, ...)

Value

An object of tdiff class, except for x argument of tind class of type "i" or "n" (integer/numeric indices), in which case an integer or numeric vector is returned.

Arguments

x

an object of tind class or tdiff class.

lag

an integer value.

differences

an integer value.

...

(ignored) further arguments passed to or from other methods.

See Also

Ops.

Examples

(nn <- sample(1:10))
(x <- today() + nn)
# all 3 should be the same
diff(x, 2, 2)
as.tdiff(diff(nn, 2, 2), "d")
diff(as.tdiff(nn, "d"), 2, 2)