Page 1 of 1
Extrapolation.
Posted: Tue Nov 09, 2010 10:26 am
by ramzan
Can Eviews 7 do Extrapolation?
Re: Extrapolation.
Posted: Tue Nov 09, 2010 10:56 am
by EViews Gareth
Can you explain what you mean by Extrapolation?
Re: Extrapolation.
Posted: Tue Nov 09, 2010 12:06 pm
by ramzan
actually i have data from 1970 to 2008 but i want the values from 1960 . some one told me the Eviews can do this
Re: Extrapolation.
Posted: Tue Nov 09, 2010 12:46 pm
by EViews Gareth
Without knowing which particular mathematical method you would like to use to estimate the values from 1960, it is hard to know whether EViews can do it or not.
Re: Extrapolation.
Posted: Tue Nov 09, 2010 1:03 pm
by ramzan
can you explain which methods are available
Re: Extrapolation.
Posted: Tue Nov 09, 2010 1:10 pm
by EViews Gareth
That's a bit like asking how long is a piece of string. Linear extrapolation (i.e. just putting a straight line through the first two available points and extending that line back to 1960) is sort of built in.
Re: Extrapolation.
Posted: Tue Nov 09, 2010 1:23 pm
by ramzan
can you please check the attached excel file, what i have tried .
Re: Extrapolation.
Posted: Tue Nov 09, 2010 2:39 pm
by startz
In order to extrapolate, you need some sort of model and it needs to rely on RHS data available during the early period. One such model is
Then use the forecast button and set the forecast smpl to be the early period. EViews will extrapolate backwards for you. Whether it's a good extrapolation depends on whether you've specified a good model.
Re: Extrapolation.
Posted: Wed Nov 10, 2010 12:08 am
by trubador
We had the very same discussion before:
viewtopic.php?f=18&t=3239
Re: Extrapolation.
Posted: Wed Nov 10, 2010 7:37 am
by startz
Trubador,
While it's a little off-topic, how do you make one of those viewtopic link things?
Re: Extrapolation.
Posted: Wed Nov 10, 2010 8:59 am
by trubador
Hi Startz,
General approach is as follows:
Code: Select all
[url=Write the link here]And name it here[/url]
When you click on the subject of a specific message or a topic, its address appears on the browser. For instance, your message's link is "
http://forums.eviews.com/viewtopic.php? ... 282#p11081"
Then you can either do the following:
Code: Select all
[url=http://forums.eviews.com/viewtopic.php?f=4&t=3282#p11081]viewtopic.php?f=4&t=3282#p11081[/url]
[url=http://forums.eviews.com/viewtopic.php?f=4&t=3282#p11081]Your last message[/url]
or simply copy and paste the link in the http format, which will produce the same thing as the former.
Code format is just for illustration purposes, since otherwise you would not be able to see the details. Hope it helps...
Re: Extrapolation.
Posted: Wed Nov 10, 2010 9:32 am
by startz
Re: Extrapolation.
Posted: Wed Nov 10, 2010 10:47 am
by EViews Gareth
Actually our forum software does the trimming on internal post urls itself. Thus if you copy a full post url from the address bar and paste it into a post you're writing, without using the url tags, it will trim it for you:
http://forums.eviews.com/viewtopic.php?f=4&t=3282