[R] Seasonality and order in Arima

[shashankgaur]

Hi all
i am new to R and was trying to forecast time series data for that i have
uplifted data from a site
http://www.eia.gov/cneaf/electricity/page/sales_revenue.xls
and used their ALL Sector revenue data 
upto 13000 as train data and rest kept separately for testing of prediction
..
now i want to set my model to give closet prediction to test data however i
am not getting how to adjust these order and seasonality 
i have also read 
http://www.duke.edu/~rnau/arimrule.htm
but didnt got anything as o how much should i adjust it .as i m unfamiliar
to most of R syntax i m therefore facing more issues..Please post your
replies through citing syntaxes in R and hoe to interpret acf and pacf to
adjust them

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