Hi all, I have made a lot of attempts with ts package and arima model for forecasting. Now I am looking on zoo package. I follow Gabor's steps from another post on leap years https://stat.ethz.ch/pipermail/r-help/2011-February/269069.html and I am confused in that step: # put dates (without Feb 29's) back to view d.mts <- do.call(cbind, d[1:3]) zd <- zoo(coredata(d.mts), time(zz)) View(zd) Where does d[1:3] refers? Having created a zooreg time series, how will I continue with the forecasting? Is it the same way as when I was using the tseries package? Thanks in advance christina [[alternative HTML version deleted]]