Calculate lagged differences of Term objects

diff returns a Term vector with lagged differences.

# S4 method for Term
diff(x, lag = 1, ..., fill = NULL)

Arguments

x

a Term object.

lag

a numerix indicating which lag to use.

...

additional arguments. Currently unused.

fill

a numeric value (or NA) to fill the empty created by applying diff to a Term object.

Value

A new Term object with lagged differences of the given Term object.

Examples

t <- term(1:10, "months")
diff(t)
#> [1] "1 month" "1 month" "1 month" "1 month" "1 month" "1 month" "1 month"
#> [8] "1 month" "1 month"