[R] how to increase speed for function?/time efficiency of below function

[R. Michael Weylandt]

I'd suggest you get a copy of the book that code accompanies: it's not
a trivial question -- this post may also help:
http://tolstoy.newcastle.edu.au/R/help/04/07/0117.html -- once you
read that I believe I told you how to fit a general ARIMA model before
so you should be good to go.

As to your original question (which you seem to have been diverted
from): your problem is "embarassingly parallel" so you can use
mclapply and friends from the parallel package for R >=2.14

Michael

On Fri, Mar 30, 2012 at 10:05 AM, sagarnikam123 <sagarnikam123 at gmail.com> wrote:
> Yes sir,i m using another's code,i will acknowledge them in my paper
> publication when my project completes.
> but can u tell me, how to decide P,D & Q values in sarima() function  using
> code
> its difficult to decide by visually,i have 4500 such time series
>
>
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