last {sfsmisc}

Get Last Elements of a Vector

Description

Extract the last elements of a vector.

Usage

last(x, length.out = 1, na.rm = FALSE)

Arguments

x

any vector.

length.out

integer indicating how many element are desired. If positive, return the length.out last elements of x; if negative, the last length.out elements are dropped.

na.rm

logical indicating if the last non-missing value (if any) shall be returned. By default (it is FALSE and) the last elements (whatever its values) are returned.

Value

a vector of length abs(length.out) of last values from x.

Note

This function may eventually be deprecated for the standard R function tail().

Useful for the turnogram() function in package pastecs.

Author(s)

Werner Stahel ([e-mail]), and independently, Philippe Grosjean ([e-mail]), Frédéric Ibanez ([e-mail]).

See Also

first, turnogram

Examples

a <- c(NA, 1, 2, NA, 3, 4, NA)
last(a)
last(a, na.rm=TRUE)

last(a, length = 2)
last(a, length = -3)