> On 14 Jan 2016, at 22:36, Lorenzo Isella <lorenzo.ise...@gmail.com> wrote: > > Dear All, > Perhaps I am drowning in a cup of water, since I am positive that the > answer will be a one-liner. > Consider the following short script > > > ######################################################## > library(forecast) > > ts2<-structure(c(339130, 356462, 363234, 378179, 367864, 378337, 392157, > 402153, 376361, 392204, 403483, 414034, 391967, 406067, 419464, > 434913, 410102, 424795, 437073, 448827, 415569, 430561, 444719, > 455764, 419892, 444190, 454648, 466312, 439922, 448963, 465153, > 475621, 445502, 457198, 473573, 485764, 463895, 470274, 484390, > 490678, 478003, 483570, 499141, 509216, 481395, 492345, 511184, > 513420, 483757, 490884, 514966, 515457, 497614, 510139, 523467, > 526406, 499784, 519033, 532009, 531260, 521539, 532590, 553118, > 557725, 548321, 556832, 578087, 578120, 566116, 580571, 587993, > 569985, 534326, 539641, 564824, 568445, 558614, 570192, 594584, > 598305, 593769, 598278, 620147, 615884, 611033, 609304, 630458, > 624325, 614356, 627192, 649324, 645988, 642965, 645125, 669471, > 665529, 664248, 669670, 694719), na.action = structure(1:64, class = > "omit"), .Tsp = c(1991, > 2015.5, 4), class = "ts") > > fit2 <- auto.arima(ts2, approximation=FALSE,trace=FALSE) > > pred2 <- forecast(fit2, h=2) > > ####################################################### > > So, I have an original quarterly time series ts2 and a forecast for 2 > quarters pred2. > > I would like to combine ts2 and pred2 (just the prediction) into a new > time series (in other words, just stretch a bit ts2). > How can I do that?
A possible way is this ts3 <- ts(c(ts2,pred2$mean),start=start(ts2),frequency=frequency(ts2)) Most likely there are more ways of getting what you want. Berend > Many thanks > > Lorenzo > > ______________________________________________ > R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
