Hi guys,
I have an ARIMA-model that looks like this
txt<- auto.arima(training, xreg=reg1training, lambda="auto", stepwise=FALSE)
txt
#> Series: training
#> Regression with ARIMA(0,1,1)(0,1,1)[12] errors
#> Box Cox transformation: lambda= -0.1176994
#>
#> Coefficients:
#> ma1 sma1 xreg
#> -0.6507 -0.4964 0.1057
#> s.e. 0.0897 0.1514 0.0188
#> sigma^2 estimated as 0.09377: log likelihood=-15.75
#> AIC=39.49 AICc=40.16 BIC=48.19
But what if I want to make a new ARIMA-model from the same order.
I know the function
arimaorder(txt)
#> p d q P D Q Frequency
#> 0 1 1 0 1 1 12
and
txt$arma
#>[1] 0 1 0 1 12 1 1
Making the new model manually is therefore not difficult.
But how could I accomplish it automatically?
So the end result must be something like
arima(newdata, order=c(same as txt))
Thanks!