order of RHS variables

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startz
Non-normality and collinearity are NOT problems!
Posts: 3775
Joined: Wed Sep 17, 2008 2:25 pm

order of RHS variables

Postby startz » Tue Oct 25, 2011 10:13 am

It appears that EViews moves AR and MA terms to the end of the equation, no matter what order they're entered in. This is not so good if one is writing a program and wants to control which coefficients go where in the C vector.

EViews Gareth
Fe ddaethom, fe welon, fe amcangyfrifon
Posts: 13319
Joined: Tue Sep 16, 2008 5:38 pm

Re: order of RHS variables

Postby EViews Gareth » Tue Oct 25, 2011 10:25 am

That's the way it has always been. Changing it would be problematic, since there are lots of programs out there that require the ARMA terms to be at the end.

Usually it isn't such a big deal to program around if it does get in your way.
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EViews Glenn
EViews Developer
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Joined: Wed Oct 15, 2008 9:17 am

Re: order of RHS variables

Postby EViews Glenn » Tue Oct 25, 2011 1:49 pm

It may not be quite as convenient, but if you really wanted control, couldn't you specify by explict expression?

startz
Non-normality and collinearity are NOT problems!
Posts: 3775
Joined: Wed Sep 17, 2008 2:25 pm

Re: order of RHS variables

Postby startz » Tue Oct 25, 2011 3:10 pm

Sure, but it's not so convenient. Not to mention that the program should do what I tell it rather than what it thinks best for me.

EViews Glenn
EViews Developer
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Joined: Wed Oct 15, 2008 9:17 am

Re: order of RHS variables

Postby EViews Glenn » Tue Oct 25, 2011 4:04 pm

First off, I agree with you in this case, but Gareth is correct about the problems with changing things at this point since the early TSP code from way back when wasn't designed that way.

But I also want to suggest that your last sentence may be asking for more than you really want 8) :)

startz
Non-normality and collinearity are NOT problems!
Posts: 3775
Joined: Wed Sep 17, 2008 2:25 pm

Re: order of RHS variables

Postby startz » Tue Oct 25, 2011 4:24 pm

EViews Glenn wrote:But I also want to suggest that your last sentence may be asking for more than you really want 8) :)

I have repeatedly asked for a "Do what I would want if I had thought this through more carefully" command. I am still holding out hopes for version 8.


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