Hello,

Inline.

Às 11:04 de 03/02/20, Martin Maechler escreveu:
ismael ismael via R-devel
     on Mon, 3 Feb 2020 04:09:24 -0600 writes:

     > It works!!!
     > Thank you so much for your help!

and it was an "R help" question which  Rui  so generously answered.

But this is the R-devel mailing list.
Please do *NOT* misuse it for  R-help questions in the future:

These should go to the R-help mailing list instead!

Yes, and I had noticed it but then, after writing down the answer, forgot to mention it.
Thanks for the warning.

Rui Barradas


Best,
Martin Maechler


     >> On Feb 3, 2020, at 3:47 AM, Rui Barradas <ruipbarra...@sapo.pt> wrote:
     >>
     >> Hello,
     >>
     >> You can solve the problem in two different ways.
     >>
     >> 1. Redefine storage1 as a matrix and extract the aic *in* the loop.
     >>
     >> storage1 <- matrix(0, 4, 4)
     >> for(p in 0:3){
     >> for(q in 0:3){
     >> storage1[p + 1, q + 1] <- arima(etc)$aic
     >> }
     >> }
     >>
     >>
     >> 2. define storage1 as a list.
     >>
     >> storage1 <- vector("list", 16)
     >> i <- 0L
     >> for(p in 0:3){
     >> for(q in 0:3){
     >> i <- i + 1L
     >> storage1[[i]] <- arima(etc)
     >> }
     >> }
     >>
     >> lapply(storage1, '[[', "aic")  # get the aic's.
     >>
     >> Maybe sapply is better it will return a vector.
     >>
     >>
     >> Hope this helps,
     >>
     >> Rui Barradas
     >>
     >>
     >>
     >>
     >> Às 06:23 de 03/02/20, ismael ismael via R-devel escreveu:
     >>> Hello
     >>> I am trying to extract AICs from an ARIMA estimation with different
     >>> combinations of p & q ( p =0,1,2,3
     >>> and q=0,1.2,3). I have tried using the following code unsucessfully. 
Can
     >>> anyone help?
     >>> code:
     >>> storage1 <- numeric(16)
     >>> for (p in 0:3){
     >>> for (q in 0:3){
     >>> storage1[p]  <- arima(x,order=c(p,0,q), method="ML")}
     >>> }
     >>> storage1$aic
     >>> [[alternative HTML version deleted]]
     >>> ______________________________________________
     >>> R-devel@r-project.org mailing list
     >>> https://stat.ethz.ch/mailman/listinfo/r-devel

     > ______________________________________________
     > R-devel@r-project.org mailing list
     > https://stat.ethz.ch/mailman/listinfo/r-devel


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