Lars

Lars Palsson Syll
Professor of Civics
Malmo University
Sweden

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Today's Topics:

1. Re: scalar in loop condition (Berend Hasselman)
2. Re: scalar in loop condition (Allin Cottrell)
3. Re: scalar in loop condition (Berend Hasselman)
4. Re: scalar in loop condition (Summers, Peter)
5. ODBC troubles (Chris)
6. Working With R: Not Working!!! (Charles L. Phillips)
7. Re: scalar in loop condition (Allin Cottrell)
8. Re: Working With R: Not Working!!! (Allin Cottrell)

----------------------------------------------------------------------

Message: 1
Date: Tue, 2 Feb 2010 21:11:26 +0100
From: Berend Hasselman <bhh@xs4all.nl>
Subject: Re: [Gretl-users] scalar in loop condition
To: Gretl list <gretl-users@lists.wfu.edu>
Message-ID: <0ADFFCD0-7D4D-41AC-8219-16CE7E26FABF@xs4all.nl>
Content-Type: text/plain; charset="us-ascii"

On 02-02-2010, at 20:25, Summers, Peter wrote:

> Hi folks,
>
> The following has me at a complete loss.
>
> \begin{script}
> n = 25; # sample size
> nreps = 1; # number of replications
>
> beta1 = 1;
> beta2 = 0.8; # true values of parameters
>
> b1 = 0;
> b2 = 0;
>
> nulldata n
>

This nulldata nulls your data. So now nreps is no longer exists.
The nulldata should be placed at the top of the script.

> loop ii=1..nreps
> # simulate data
> series y = zeros(n,1)
> series u = normal()
>
> #y[1] = beta1 + u[1]
>
> loop jj=2..n --quiet
> y[jj] = beta1 + beta2[jj-1] + u[jj]

This does not agree with your specification above and will give an error since you are indexing a scalar.
I think this should be:

y[jj] = beta1 + beta2 + u[jj]

See attached corrected script.

Berend

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Message: 2
Date: Tue, 2 Feb 2010 15:25:30 -0500 (EST)
From: Allin Cottrell <cottrell@wfu.edu>
Subject: Re: [Gretl-users] scalar in loop condition
To: Gretl list <gretl-users@lists.wfu.edu>
Message-ID: <Pine.A41.4.58.1002021523400.94212@f1n11.sp2net.wfu.edu>
Content-Type: TEXT/PLAIN; charset=US-ASCII

On Tue, 2 Feb 2010, Summers, Peter wrote:

> However, when I try to run the following one, I get an error
> saying "undefined variable nreps in loop condition". This
> happens even though the script output says "generated scalar
> nreps = 1:"
>
> \begin{script}
> n = 25; # sample size
> nreps = 1; # number of replications
>
> beta1 = 1;
> beta2 = 0.8; # true values of parameters
>
> b1 = 0;
> b2 = 0;
>
> nulldata n
>
> loop ii=1..nreps

You just deleted nreps via the nulldata command. Use
nulldata --preserve to preserve existing scalars and matrices.

BTW, the trailing semi-colons are not needed (though they
shouldn't do any harm).

Allin.

------------------------------

Message: 3
Date: Tue, 2 Feb 2010 21:31:42 +0100
From: Berend Hasselman <bhh@xs4all.nl>
Subject: Re: [Gretl-users] scalar in loop condition
To: Gretl list <gretl-users@lists.wfu.edu>
Message-ID: <D52AE0A1-8B1C-4224-84DE-CA1DAA08C460@xs4all.nl>
Content-Type: text/plain; charset=us-ascii

On 02-02-2010, at 21:11, Berend Hasselman wrote:

>
> This does not agree with your specification above and will give an error since you are indexing a scalar.
> I think this should be:
>
> y[jj] = beta1 + beta2 + u[jj]
>

I should have written:

y[jj] = beta1 + beta2 * y[jj-1] + u[jj]

It's correct in the script.

Berend

------------------------------

Message: 4
Date: Tue, 2 Feb 2010 14:51:14 -0600
From: "Summers, Peter" <peter.summers@ttu.edu>
Subject: Re: [Gretl-users] scalar in loop condition
To: Gretl list <gretl-users@lists.wfu.edu>
Message-ID:
    <8885DA157278484489B1EBC8B8C043E3E3330A5743@COTTUS.ttu.edu>
Content-Type: text/plain; charset="us-ascii"

Thanks all, it's working now.

However, I did have to close gretl then re-open it to get rid of the "nulldata not available in loop" error.

PS

-----Original Message-----
From: gretl-users-bounces@lists.wfu.edu [mailto:gretl-users-bounces@lists.wfu.edu] On Behalf Of Berend Hasselman
Sent: Tuesday, February 02, 2010 2:32 PM
To: Gretl list
Subject: Re: [Gretl-users] scalar in loop condition

On 02-02-2010, at 21:11, Berend Hasselman wrote:

>
> This does not agree with your specification above and will give an error since you are indexing a scalar.
> I think this should be:
>
> y[jj] = beta1 + beta2 + u[jj]
>

I should have written:

y[jj] = beta1 + beta2 * y[jj-1] + u[jj]

It's correct in the script.

Berend

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------------------------------

Message: 5
Date: Tue, 2 Feb 2010 14:39:10 -0700
From: Chris <chris@quilley.net>
Subject: [Gretl-users] ODBC troubles
To: gretl-users@lists.wfu.edu
Message-ID:
    <93b3787f1002021339o13a60c3dy42ba2c8adbe4049f@mail.gmail.com>
Content-Type: text/plain; charset="iso-8859-1"

Hi,

I'm having some trouble getting data into gretl through ODBC. I have a
fairly large sql statement, so I'm importing it from a file. When I run the
data command I get an error and it halts. Here's the command script:
nulldata 160
setobs 5 2001:1 --time-series
open dsn=guestCalgary user=####### password=##### --odbc
string QRY1 = readfile("C:/gretl/maxbufftemp.txt")
data maxbufftemp obs-format-"%d" @QRY1 --odbc

gives me this error:
gretl version 1.8.7
Current session: 2010-02-02 14:34
? nulldata 160
periodicity: 1, maxobs: 160,
observations range: 1-160
? setobs 5 2001:1 --time-series
Full data range: 2001 - 2160 (n = 160)

? open dsn=guestCalgary user=##### password=#### --odbc
Connected to ODBC data source 'guestCalgary'
? string QRY1 = readfile("C:/gretl/maxbufftemp.txt")
Replaced string QRY1
? data maxbufftemp obs-format-"%d" @QRY1 --odbc

Error executing script: halting
> data maxbufftemp obs-format-"%d" @QRY1 --odbc

I have been able to get data from the db with simple queries, so I was
wondering, how do I get gretl to tell me what is stored in QRY1? I've tried
print, but I can't get it to work and I think that would be the obvious
place to start (verifying that my sql call got imported properly). next, I
think I might be messing up the obs-format portion of the call. The output
from the big sql query is 2 columns, 1 8 digit identifier and 1 number with
2 decimal places.

Also, are there any plans to implement more robust ODBC support? It would be
great to be able to import multiple variables at once.

Thanks,

Chris
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Message: 6
Date: Tue, 2 Feb 2010 15:56:01 -0800 (PST)
From: "Charles L. Phillips" <tptbusines_98@yahoo.com>
Subject: [Gretl-users] Working With R: Not Working!!!
To: gretl-users@lists.wfu.edu
Message-ID: <759005.77937.qm@web35703.mail.mud.yahoo.com>
Content-Type: text/plain; charset=us-ascii

Hello,
How are you doing today???
I am "NEW" to this group and using Gretl.
I have R 2.8 on a HP Compaq with Windows XP SP3.
As far as I know, R is configured correctly on my laptop.
I have had no problems with or using R.
I downloaded Gretl, and started applying te "User's Guide".
When I tried applying the examples/samples of using R, I did not get the same results. As a matter of fact, R did not respond as note in the examples/samples of the User's Guide.

I need to know the following:

1. Is there additional configuration I need to do???
2. Can Gretl work with R 2.10.1?????
3. Do I need ANY additional information or files to work with R

Let me know...

Thank you,

Inquire_98

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------------------------------

Message: 7
Date: Tue, 2 Feb 2010 21:23:52 -0500 (EST)
From: Allin Cottrell <cottrell@wfu.edu>
Subject: Re: [Gretl-users] scalar in loop condition
To: Gretl list <gretl-users@lists.wfu.edu>
Message-ID: <Pine.A41.4.58.1002022122340.2629940@f1n11.sp2net.wfu.edu>
Content-Type: TEXT/PLAIN; charset=US-ASCII

On Tue, 2 Feb 2010, Summers, Peter wrote:

> However, I did have to close gretl then re-open it to get rid of
> the "nulldata not available in loop" error.

You can type "endloop" in the gretl console to get out of a broken
loop.

Allin Cottrell

------------------------------

Message: 8
Date: Tue, 2 Feb 2010 21:31:57 -0500 (EST)
From: Allin Cottrell <cottrell@wfu.edu>
Subject: Re: [Gretl-users] Working With R: Not Working!!!
To: Gretl list <gretl-users@lists.wfu.edu>
Message-ID: <Pine.A41.4.58.1002022126150.2629940@f1n11.sp2net.wfu.edu>
Content-Type: TEXT/PLAIN; charset=US-ASCII

On Tue, 2 Feb 2010, Charles L. Phillips wrote:

> I am "NEW" to this group and using Gretl.
> I have R 2.8 on a HP Compaq with Windows XP SP3.
> As far as I know, R is configured correctly on my laptop.
> I have had no problems with or using R.
> I downloaded Gretl, and started applying te "User's Guide".
> When I tried applying the examples/samples of using R, I did not
> get the same results. As a matter of fact, R did not respond as
> note in the examples/samples of the User's Guide.
>
> I need to know the following:
>
> 1. Is there additional configuration I need to do???
> 2. Can Gretl work with R 2.10.1?????
> 3. Do I need ANY additional information or files to work with R

gretl's interaction with R should work "out of the box" for both R
2.8 and current R (2.10.1). No additional configuration should be
required, other than perhaps adjusting the setting for
"command to launch GNU R" under the Programs tab in
/Tools/Preferences/General.

If you're experiencing some specific problem, please tell us what
it is, in reasonable detail.

Allin Cottrell

------------------------------

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