From yang8898@gmail.com Fri Aug  7 11:54:24 2009
From: Zhenzeng Young <yang8898@gmail.com>
To: gretl-users@gretlml.univpm.it
Subject: [Gretl-users] how can I deal with this error?
Date: Fri, 07 Aug 2009 23:54:21 +0800
Message-ID: <243f36510908070854t7b64528bsba785ce0a6330a0c@mail.gmail.com>
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From cottrell@wfu.edu Fri Aug  7 12:13:49 2009
From: Allin Cottrell <cottrell@wfu.edu>
To: gretl-users@gretlml.univpm.it
Subject: Re: [Gretl-users] how can I deal with this error?
Date: Fri, 07 Aug 2009 12:13:48 -0400
Message-ID: <Pine.A41.4.58.0908071208480.790946@f1n11.sp2net.wfu.edu>
In-Reply-To: 243f36510908070854t7b64528bsba785ce0a6330a0c@mail.gmail.com
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On Fri, 7 Aug 2009, Zhenzeng Young wrote:

> When i was estimation a simultaneous equation model, a error massage
> appeared: You must include a constant in this sort of model.
> Could anybody be kindly tell me the reason and how to solve the problem?
> Thanks!
> PS. system setting:
> # set the model up as a system
>
> system name="all"
>  equation pf 0 gdpr pcr kaopen
>  equation pcr 0 pf gdp topen fdi efw
>  endog pf pcr
> end system
>
> # and estimate it in various ways
> estimate "all" method=ols

In the script in your email, the "equation" and "endog" lines
started with funny non-ASCII symbols.  I'm not sure if that's the
issue.  But your equations contain "0" (= the constant) OK.

I tried mocking up your example thus

<script>
nulldata 100
series pf = normal()
series gdp = normal()
series gdpr = normal()
series pcr = normal()
series kaopen = normal()
series topen = normal()
series fdi = normal()
series efw = normal()

system name="all"
equation pf 0 gdpr pcr kaopen
equation pcr 0 pf gdp topen fdi efw
endog pf pcr
end system

estimate "all" method=ols
</script>

This script ran without any error. What version of gretl are you
using?

Allin Cottrell

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From yang8898@gmail.com Fri Aug  7 12:49:11 2009
From: Zhenzeng Young <yang8898@gmail.com>
To: gretl-users@gretlml.univpm.it
Subject: [Gretl-users] Re: how can I deal with this error?
Date: Sat, 08 Aug 2009 00:49:09 +0800
Message-ID: <243f36510908070949s6e569097s4fd71a3225d98cf9@mail.gmail.com>
In-Reply-To: Pine.A41.4.58.0908071208480.790946@f1n11.sp2net.wfu.edu
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Thanks very much, I'm a starter of gretl and know little about
scripts. I will try, thanks!
I,m using 1.8.1.

2009/8/8, Allin Cottrell <cottrell(a)wfu.edu>:
> On Fri, 7 Aug 2009, Zhenzeng Young wrote:
>
>> When i was estimation a simultaneous equation model, a error massage
>> appeared: You must include a constant in this sort of model.
>> Could anybody be kindly tell me the reason and how to solve the problem?
>> Thanks!
>> PS. system setting:
>> # set the model up as a system
>>
>> system name="all"
>>  equation pf 0 gdpr pcr kaopen
>>  equation pcr 0 pf gdp topen fdi efw
>>  endog pf pcr
>> end system
>>
>> # and estimate it in various ways
>> estimate "all" method=ols
>
> In the script in your email, the "equation" and "endog" lines
> started with funny non-ASCII symbols.  I'm not sure if that's the
> issue.  But your equations contain "0" (= the constant) OK.
>
> I tried mocking up your example thus
>
> <script>
> nulldata 100
> series pf = normal()
> series gdp = normal()
> series gdpr = normal()
> series pcr = normal()
> series kaopen = normal()
> series topen = normal()
> series fdi = normal()
> series efw = normal()
>
> system name="all"
> equation pf 0 gdpr pcr kaopen
> equation pcr 0 pf gdp topen fdi efw
> endog pf pcr
> end system
>
> estimate "all" method=ols
> </script>
>
> This script ran without any error. What version of gretl are you
> using?
>
> Allin Cottrell
> _______________________________________________
> Gretl-users mailing list
> Gretl-users(a)lists.wfu.edu
> http://lists.wfu.edu/mailman/listinfo/gretl-users
>

-- 
从我的移动设备发送

YANG Zhenzeng
Dep. of international economics and trade,
Economics school,
Tianjin University of Finance and Economics, PRC.


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