11:09 a.m.
Dear Allin and Jack
I have a mydata1.gdt and a script named test.inp as attached. After I
re-run the script, a strange result in the icon view occurs. That is,
there are two model1, model2, model2, ... and so on. If I re-run the
script again. these icons of models will be replicated accumulatively,
though every individual icon works normally if you click on it. (the
screenshot of the icon view is also attached)
Is there anything wrong with my script? Or, is this a minor bug?
Additionally, after that, I am not allowed to delete any variables. An
error says "Cannot delete xxx: variable is in use.
I did several tests but failed to detect the problem. This occurs both
under my win2000 (built date: 2010-01-29) and ubuntu 8.10 (built by
myself, updated with cvs)
Thanks
Yi-Nung Yang
12:32 p.m.
On Fri, 12 Mar 2010, yinung at Gmail wrote:
I have a mydata1.gdt and a script named test.inp as attached. After
I
re-run the script, a strange result in the icon view occurs. That is,
there are two model1, model2, model2, ... and so on. If I re-run the
script again. these icons of models will be replicated accumulatively,
though every individual icon works normally if you click on it. (the
screenshot of the icon view is also attached)
Is there anything wrong with my script? Or, is this a minor bug?
It's a bug, and it'll be fixed shortly. However, there is an easy
workaround. I recommend that when you construct a script of this
sort you always start by opening the dataset:
open mydata1.gdt
That clears out gretl's workspace.
Additionally, after that, I am not allowed to delete any variables.
An
error says "Cannot delete xxx: variable is in use.
That's correct, not a bug. You have saved models that use those
variables. If you were able to delete them it would undermine the
saved models, disabling several items on the model Tests menu.
Allin
1:20 p.m.
On Thu, 11 Mar 2010, Allin Cottrell wrote:
On Fri, 12 Mar 2010, yinung at Gmail wrote:
> I have a mydata1.gdt and a script named test.inp as attached. After I
> re-run the script, a strange result in the icon view occurs. That is,
> there are two model1, model2, model2, ... and so on. If I re-run the
> script again. these icons of models will be replicated accumulatively,
> though every individual icon works normally if you click on it. (the
> screenshot of the icon view is also attached)
>
> Is there anything wrong with my script? Or, is this a minor bug?
It's a bug, and it'll be fixed shortly.
Now fixed in CVS.
It's unrelated, but there's a bug in your script. Your dataset
contains a variable named "weekday" which holds values 1 to 5.
You create a set of 5 dummies via
series dum1=(weekday-1=1)
series dum2=(weekday-1=2)
series dum3=(weekday-1=3)
series dum4=(weekday-1=4)
series dum5=(weekday-1=5)
and you then include all 5 dummies (plus the constant) in an OLS
regression. In fact the variable dum5 will contain all zeros, and
hence will be automatically deleted from the regression list.
If the dummies were defined "correctly" (?) as, e.g.,
series dum1=(weekday=1)
then dum5 would still be deleted, since the 5 dummies would be
jointly perfectly collinear with the constant.
One smaller point: the recommended syntax uses "==" for testing
for equality, as in
series dum1=(weekday==1)
Allin
10:53 p.m.
Dear Allin
I've just downloaded the cvs and test it under winXP and ubuntu 81.0
in my office. The icons will not be replaicted redundantly.
Though after executing the script (as I attached previously), the
icons will together shift to the right and leave one empty space in
the icon view windows. I have to right-click "arrange icon" to let
them aligned in the icon view. And I also found (ocassionally) this
mis-alignment has a "cyclical" behavior since run my script four
times, those icons will go back to their should-be place. Anyway, this
is minor.
> Additionally, after that, I am not allowed to delete any
variables. An
> error says "Cannot delete xxx: variable is in use.
That's correct, not a bug.
Yes, I understand. Thanks
> and you then include all 5 dummies (plus the constant) in an OLS
> regression. I
Sure! This is an on-purpose demo for teaching econometrics. Gretl has
such a nice feature for beginner when they often use dummy variables
incorrectly. Other software, e.g., E-views, only reports something
like "near singular" so that students don't realize what's wrong with
their model specifications.
Thanks
Yi-Nung Yang
2010/3/12 Allin Cottrell <cottrell(a)wfu.edu>:
On Fri, 12 Mar 2010, yinung at Gmail wrote:
> I have a mydata1.gdt and a script named test.inp as attached. After I
> re-run the script, a strange result in the icon view occurs. That is,
> there are two model1, model2, model2, ... and so on. If I re-run the
> script again. these icons of models will be replicated accumulatively,
> though every individual icon works normally if you click on it. (the
> screenshot of the icon view is also attached)
>
> Is there anything wrong with my script? Or, is this a minor bug?
It's a bug, and it'll be fixed shortly. However, there is an easy
workaround. I recommend that when you construct a script of this
sort you always start by opening the dataset:
open mydata1.gdt
That clears out gretl's workspace.
> Additionally, after that, I am not allowed to delete any variables. An
> error says "Cannot delete xxx: variable is in use.
That's correct, not a bug. You have saved models that use those
variables. If you were able to delete them it would undermine the
saved models, disabling several items on the model Tests menu.
Allin
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11:27 p.m.
On Fri, 12 Mar 2010, yinung at Gmail wrote:
I've just downloaded the cvs and test it under winXP and ubuntu
81.0
in my office. The icons will not be replaicted redundantly.
Good, thanks for the report.
Though after executing the script (as I attached previously), the
icons will together shift to the right and leave one empty space in
the icon view windows...
Yes, I noticed that. I'll take another look.
>> and you then include all 5 dummies (plus the constant) in an
OLS
>> regression. I
Sure! This is an on-purpose demo for teaching econometrics...
Sorry, I shouldn't have doubted you ;-)
Allin Cottrell
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