Dear forum, I would like to forecast e.g. with the arima-model. To figure out which model works best I am going to predict with this models.
my first code: for(ar.ord in 1:3){ for(ma.ord in 1:3){ print(predict(arima(para_qtr[1:(n-8),1],order=c(ar.ord,1,ma.ord)), n.ahead=8)$pred) } } this one works. but I want to "save" my results in a matrix or a data.frame. my second code: foreL<-8 b0f<-matrix(nrow=9, ncol=foreL) for(i in 1:9){ for(ar.ord in 1:3){ for(ma.ord in 1:3){ b0f[i,]<-c(predict(arima(para_qtr[1:(n-8),1],order=c(ar.ord,1,ma.ord)), n.ahead=foreL)$pred) } } } sure- this one doesn't work. the matrix b0f only consists of the forecast of the ARIMA(3,1,3)-model. I need the forecasts of ARIMA(1,1,1), ARIMA(2,1,1) ARIMA(3,1,1), ARIMA(3,1,2) and so on ad nauseam in the lines of the b0f matrix. I would be glad if someone could help me. best regards, fred -- View this message in context: http://r.789695.n4.nabble.com/Loops-tp3814162p3814162.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ R-help@r-project.org mailing list 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.