Re: [Gretl-users] Problem With Roots Accessor

(...) > Now it is not working anymore :-( Using the "test case" I provided > everything works: > > <hansl> > open data9-7 > loop i = 1..2 > arima $i 1 2 ; QNC > matrix r = $["roots"] # overwrites "r" > print r > endloop > </hansl> > > But with my "real world" example it doesn't [...] > loop for P=0..max_ar_lags --quiet > loop for Q=0..max_ma_lags --quiet > matrix especificacoes = especificacoes | {$P, 1, $Q} > endloop > endloop The trouble is that the first model estimated in your "real world" example doesn't have any ARMA roots (P = Q = 0). For all the other specifications you'll get the $["roots"] matrix OK.