Search found 12388 matches

by EViews Gareth
Wed Nov 19, 2008 9:15 am
Forum: Estimation
Topic: Weighting Coefficients
Replies: 2
Views: 2485

Re: Weighting Coefficients

You can always write out an equation as an expression rather than by list (both in a program and via the dialogs). i.e. ls y c x1 x2 is the same thing as ls y = c(1)+c(2)*x1+c(3)*x2 When written out as an expression you can replace a coefficient with a value, i.e.: ls y = c(1)+0.5*x1 + c(2)*x2 Unfor...
by EViews Gareth
Wed Nov 19, 2008 9:02 am
Forum: Programming
Topic: Panel data export
Replies: 6
Views: 3387

Re: Panel data export

Is your copy of EViews up-to-date?
by EViews Gareth
Tue Nov 18, 2008 11:33 pm
Forum: Suggestions and Requests
Topic: old style help screens!
Replies: 5
Views: 3658

Re: old style help screens!

Unfortunately Microsoft, in their wisdom, decided to withdraw support for the old help system from Windows (Vista onwards), thus our hand was forced. We are well aware that the current help system has its flaws, but as of yet have not found a good alternative.
by EViews Gareth
Mon Nov 17, 2008 6:43 pm
Forum: Estimation
Topic: GRS statistic
Replies: 2
Views: 5961

Re: GRS statistic

No idea what the GRS statistic is personally, but it looks like this might be of help:
http://www.wiwi.uni-tuebingen.de/cms/fi ... e13-06.pdf

(if you haven't already seen it!)
by EViews Gareth
Mon Nov 17, 2008 4:00 pm
Forum: Programming
Topic: Naming Variables in Loop
Replies: 1
Views: 2048

Re: Naming Variables in Loop

Here you go: spool myspool series obsnum = @obsnum for !i=1 to 134 smpl if @crossid = !i %cxname = alpha(@min(obsnum)) %eqname = "e_" + %cxname equation {%eqname}.ls ssu c price acv items promoacv promounits @trend(1) @expand(period,@dropfirst) easter myspool.append {%eqname}.stats next Wh...
by EViews Gareth
Mon Nov 17, 2008 2:03 pm
Forum: Programming
Topic: Dynamic forecasting with coefficient update in a VEC-model
Replies: 5
Views: 6320

Re: Dynamic forecasting with coefficient update in a VEC-model

It looks like you're trying to use the model.solve command in the same way you would use an equation.forecast command. Unfortunately the way they work is slightly different. For an equation.forecast, you need to specify the name of the series you wish to forecast into, and, optionally, the name of a...
by EViews Gareth
Mon Nov 17, 2008 10:26 am
Forum: Estimation
Topic: Pool Data and System Estimation
Replies: 10
Views: 5779

Re: Pool Data and System Estimation

Also, when I try to use @expand(period,@dropfirst) in the system, it says that "period is undefined" I've also tried @expand(period?,@dropfirst) which I think may be incorrect notation, but more precise logic. What is PERIOD? The first thing you tried makes me believe it is a series in yo...
by EViews Gareth
Mon Nov 17, 2008 10:21 am
Forum: Estimation
Topic: Pool Data and System Estimation
Replies: 10
Views: 5779

Re: Pool Data and System Estimation

I would like to be able to run all these regressions at once, as to speed up this process. Based on the data, I can tell you the variables causing the singularity issue probably have the same number for each observation (perfectly collinear with the constant term). Any ideas? The only solution is t...
by EViews Gareth
Mon Nov 17, 2008 9:13 am
Forum: Programming
Topic: Panel data export
Replies: 6
Views: 3387

Re: Panel data export

You can use the @effects data member of your equation to save them into a vector:

Code: Select all

vector cx = eq1.@effects
by EViews Gareth
Mon Nov 17, 2008 9:08 am
Forum: Estimation
Topic: Pool Data and System Estimation
Replies: 10
Views: 5779

Re: Pool Data and System Estimation

First off, if the regressions are independent, I think you're probably better off running them individually (and, say, putting the results into a Spool if you want to collate them) than running them simultaneously in a system. There is no easy way to identify which variables are causing your singula...
by EViews Gareth
Sun Nov 16, 2008 10:31 pm
Forum: Models
Topic: Viewing results of two different scenarios on the same graph
Replies: 2
Views: 2899

Re: Viewing results of two different scenarios on the same graph

You can use the Compare box in the Proc->Make Graph of a Model Object to include different scenarios.
by EViews Gareth
Sun Nov 16, 2008 10:29 pm
Forum: Models
Topic: Forecasting with Models
Replies: 11
Views: 13545

Re: Forecasting with Models

I'm not sure I follow this question at all.

The EViews model object can be used for forecasting. You forecast with a model by first creating the model, then solving over the observations you wish to forecast. This doesn't, necessarily have anything to do with resizing the workfile.
by EViews Gareth
Fri Nov 14, 2008 10:02 am
Forum: Programming
Topic: command which gives out p-values?
Replies: 1
Views: 2617

Re: command which gives out p-values?

You are correct that the in-built stepwise routine only handles linear models. You are also correct that the best way to get the p-values is to compute them using the t-statistics. You should note though, that if you are only interested in the p-values as selection criteria for the stepwise routine,...
by EViews Gareth
Fri Nov 14, 2008 9:03 am
Forum: Programming
Topic: normal bivariate random generator
Replies: 3
Views: 6313

Re: normal bivariate random generator

Possibly not. Its just a quick way to fill a matrix with (normal) random numbers

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