On Thu, 12 Oct 2006, Sven Schreiber wrote: > Hi, with gretl built today from cvs I can't get the post-estimation > access to internal variables from *Systems* (VAR, VECM) to work via the > gui. (Well, actually this is the first time I'm trying, don't know about > earlier versions.) > > It works if I do everything including estimation via console, but not if > I estimate via gui first, and then try various access methods (console > command, via menu in main window). > > Also, in the documentation it says that in every model window there > should be some menu item to access those internal variables. But that > only seems to apply to single-equation stuff, right? If so, maybe it > should be clarified.
With VARs, at present, the only values you can retrieve via the gui are the per-equation residuals (under the Save menu in the model window). Basically this is because all other available values are matrices, and there's no facility (yet) for handling matrices in the gui (only series and scalars). One other point: when you estimate a model via the gui (single equation or multiple) it does _not_ become the "last model", for data retrieval purposes, so far as the console is concerned. This is perhaps debatable, but it's by design. The idea was that things could get confusing. Suppose a user has one "thread" going in the console (estimate, retrieve values, calculate), and then, "on the side", estimates a model via point-and-click. Then where should, say, $uhat be drawn from in the next console command? At present the answer is, from the last model estimated via the console. Actually, the underlying assumption is that anyone doing anything at all complicated with retrieval of model data would write a script, in which case these issues don't arise. Allin.
