dlm (version 1.1-2)

dropFirst: Drop the first element of a vector or matrix

Description

A utility function, dropFirst drops the first element of a vector or matrix, retaining the correct time series attributes, in case the argument is a time series object.

Usage

dropFirst(x)

Arguments

x

a vector or matrix.

Value

• The function returns x[-1] or x[-1,], if the argument is a matrix. For an argument of class ts the class is preserved, together with the correct tsp attribute.

Examples

(pres <- dropFirst(presidents))
start(presidents)
start(pres)