auto.arima function in R

2 messages · Akhil dua, Brian Ripley

Thu, Nov 20, 2014 2:52 AM #

Hello every one,

I am using daily data of the flight departure.

Departure Date           Load (Seats booked/Capacity)
12/01/2011                                 10
13/01/2011                                 12
14/01/2011                                 09

I want to fit an arima model to the data for forecasting the load for the
next day flight. I am using auto.arima function in R.

Residuals and fitted values that I am getting from auto.arima has NAs
whereas I don't have any NA in my original data.

Can anyone please help me with the probable reason for this.

Akhil Dua
Consultant
 National Institute of Public Finance and Policy
18/2 Satsang Vihar Marg,
Special Institutional Area,
New Delhi 110067.
[Near JNU East Gate]

Mo:+91-7827-662-202
Location:- http://goo.gl/ICCjh

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Brian Ripley

Thu, Nov 20, 2014 4:16 AM #

There is no auto.arima function 'in R'.  Do give credit/blame where it 
is due (probably package 'forecast').

Without the reproducible example the posting guide asked for, we can 
only guess wildly.  I at least decline to do so.

On 20/11/2014 10:52, Akhil dua wrote:

Brian D. Ripley,                  ripley at stats.ox.ac.uk
Emeritus Professor of Applied Statistics, University of Oxford
1 South Parks Road, Oxford OX1 3TG, UK