`R/expsmooth-package.R`

Monthly copper prices. Copper, grade A, electrolytic wire bars/cathodes,LME,cash (pounds/ton) Source: UNCTAD (http://stats.unctad.org/Handbook).

`mcopper`

time series

Hyndman, R.J., Koehler, A.B., Ord, J.K., and Snyder, R.D., (2008)
*Forecasting with exponential smoothing: the state space approach*,
Springer

http://www.exponentialsmoothing.net

plot(mcopper,main="Monthly copper price",ylab="pounds per ton",xlab="Year")