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forecasting the level variable
Posted: Tue Nov 16, 2010 5:12 am
by lfcburc
hi everyone..here is my question
i work with some seasonal time series..(i must mention i am very new to the econometrics)..i take logarithm of series firstly,first level difference then,and seasonal difference ..so my series 'export' becomes 'D12DLNEXPORT'..
when i try to forecast ,i just want to predict the level variable: 'export' ,not the latest form(D12DLNEXPORT)..
can someone help please?
Re: forecasting the level variable
Posted: Tue Nov 16, 2010 8:47 am
by lfcburc
can somebody help please???i need some answers..
Re: forecasting the level variable
Posted: Tue Nov 16, 2010 8:58 am
by startz
If you are forecasting from an equation, make the left hand side variable dlog(export) and EViews will offer to forecast the level. I'm not sure how to handle the seasonal part.
Re: forecasting the level variable
Posted: Tue Nov 16, 2010 9:43 am
by lfcburc
ok thanks..but its the seasonal part that actually causes trouble..
i think it can be something like that.. dlog(export,1,12) or dlog(export,0,12)
does these look possible? any idea?
Re: forecasting the level variable
Posted: Tue Nov 16, 2010 10:48 am
by lfcburc
hey admins? no reply to my question?
Re: forecasting the level variable
Posted: Tue Nov 16, 2010 11:22 am
by EViews Gareth
You answered your own question. The DLOG function calculates log-difference, and it has arguments for both the difference order and the seasonal difference order.
Re: forecasting the level variable
Posted: Tue Nov 16, 2010 12:57 pm
by lfcburc
thanks..
Re: forecasting the level variable
Posted: Thu Sep 06, 2018 9:34 am
by AntonioAcha
Can someone post the code to forecast the series in levels pls