R/copper3.R

In robjhyndman/fma: Data Sets from "Forecasting: Methods and Applications" by Makridakis, Wheelwright & Hyndman (1998)

#' Copper prices
#'
#' Yearly copper prices for 43 consecutive years (in constant 1997 dollars).
#'
#' @format Time series data
#' @source Makridakis, Wheelwright and Hyndman (1998) \emph{Forecasting:
#' methods and applications}, John Wiley & Sons: New York. Chapter 9.
#' @keywords datasets
#' @examples
#' plot(copper3)
#'
"copper3"