I have been testing the improvements for model windows under changing subsampling options. Thanks to Allins recent work, this functionality looks very nice and works smoothly in general. I also have some suggestions and bugs to report:
1)- In the Edit menu for the model window, it could be useful to add an option such as "restore model sample" to quickly reverting to the subsample used by that model. 2)- I understand disabling forecasts but don't see why gretl disables saving the residuals, fitted values etc. from a model just because the current subsample is different. I think it is perfectly OK to save the residuals based on the model subsample with the outside observations having missing values After all, this is what gretl does when the current subsample happens to match the model subsample. 3)- A Bug: I have 2 models one is with n=100 and based on a dummy, while the other is using a random subsample with n=200. After estimating the second model, I return to the first one and gretl asks me if I want to restore the sample. I say yes and now the sample size is 60 instead of 100 (probably because gretl took the observations only from the active random subsample of n=200 instead of the full sample). The sample size keeps getting smaller as I open more model windows and say yes to restoring the original sample! What is more, if I now choose restore the full range from gretl's main window, the full range is 60 instead of the full sample with n=400. The Set range option also does not allow me to choose 1 to 400. 4)- The subsampling info at the bottom of the gretl main window could use some improvements. For example, when the sub sample is based on a dummy, instead of just saying "current sample n = 100" it would be nice if gretl said something like: "current sample based on dummy <varname> (n = 100)" (The same thing for other subsampling options such as random subsamples etc.) 5)- I think the above improvement would be extremely useful for the model output as well. For example, currently when I estimate an OLS model based on a random subsample with n=200, the model output says: "Model 1: OLS, using observations 1-200" which does not give any info about the subsampling employed and giving the misleading impression that the first 200 observations were used. I also have some other small bugs to report: 6)- Opening a new data set, all open windows are closed except for the gnuplot graphs. 7)- In the model specification window, when the "Set as default" option is checked, it becomes unchecked the next time (although the dependent variable is set correctly and as expected) 8)- My system is Turkish and when I use gretl in English, the legend for the OLS fitted line still uses commas as the decimal seperator. 9)- Also, when using gretl in Turkish, entering formula for a new line I need to use dot as the decimal seperator. If I use the comma sign in the formula, gretl draws a wrong line and a differently wrong legend. I think this issue was fixed a while ago. These are all I can report right now. Again thanks for the great job on this front. Cheers A. Talha Yalta On Sat, Sep 19, 2009 at 10:26 PM, Talha Yalta <talhayalta(a)gmail.com> wrote: > On Fri, Sep 18, 2009 at 11:51 PM, Allin Cottrell <cottrell(a)wfu.edu> wrote: >> >> On Fri, 18 Sep 2009, Allin Cottrell wrote: >> >>> On Fri, 18 Sep 2009, Talha Yalta wrote: >>> > ...[W]hen the user opens a saved model or activates an open >>> > model window, gretl first checks whether the current subsample >>> > matches with those of the model and opens up a dialog box >>> > asking if the user wants to return to the subsample used by >>> > the model. If the user say "yes" the subsample is >>> > automatically adjusted. If the user says "no," then the Tests >>> > and Graphs menus are diasabled along with the "Modify model" >>> > option. >> >> That's now the case, except that even if you say "No" to resetting >> the sample, most items in the model menus will work OK. > > The newly implemeted behavior sounds outstanding, simply outstanding. > I will be away from computers for a few days but I cannot wait to > install and test the latest updates once I return Wednesday morning. > Thanks very very much for giving one more thing to brag about while > demonstrating gretl to the uninitiated :-) > Cheers > A. Talha Yalta > > > -- > “Remember not only to say the right thing in the right place, but far > more difficult still, to leave unsaid the wrong thing at the tempting > moment.” - Benjamin Franklin (1706-1790) > -- > -- “Remember not only to say the right thing in the right place, but far more difficult still, to leave unsaid the wrong thing at the tempting moment.” - Benjamin Franklin (1706-1790) --
