forecasting the level variable

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lfcburc
Posts: 5
Joined: Tue Nov 16, 2010 4:40 am

forecasting the level variable

Postby lfcburc » Tue Nov 16, 2010 5:12 am

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?

lfcburc
Posts: 5
Joined: Tue Nov 16, 2010 4:40 am

Re: forecasting the level variable

Postby lfcburc » Tue Nov 16, 2010 8:47 am

can somebody help please???i need some answers..

startz
Non-normality and collinearity are NOT problems!
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Re: forecasting the level variable

Postby startz » Tue Nov 16, 2010 8:58 am

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.

lfcburc
Posts: 5
Joined: Tue Nov 16, 2010 4:40 am

Re: forecasting the level variable

Postby lfcburc » Tue Nov 16, 2010 9:43 am

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?

lfcburc
Posts: 5
Joined: Tue Nov 16, 2010 4:40 am

Re: forecasting the level variable

Postby lfcburc » Tue Nov 16, 2010 10:48 am

hey admins? no reply to my question?

EViews Gareth
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Re: forecasting the level variable

Postby EViews Gareth » Tue Nov 16, 2010 11:22 am

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.
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lfcburc
Posts: 5
Joined: Tue Nov 16, 2010 4:40 am

Re: forecasting the level variable

Postby lfcburc » Tue Nov 16, 2010 12:57 pm

thanks..

AntonioAcha
Posts: 21
Joined: Wed Jan 07, 2015 8:49 am

Re: forecasting the level variable

Postby AntonioAcha » Thu Sep 06, 2018 9:34 am

Can someone post the code to forecast the series in levels pls


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