Sorry, I forgot to mention: I have revamped the "system" command and added a new command, "estimate", so that one can define an equation system then estimate it using various methods.
I'm attaching the latest revision of the gretl demo file klein.inp, which provides an example of how this works. -- Allin Cottrell Department of Economics Wake Forest University, NC
# Klein's "Model 1" (1950) open klein.gdt genr W = Wp + Wg genr A = t - 1931 genr P1 = P(-1) genr X1 = X(-1) # Equation-by-equation OLS ols C 0 P P1 W ols I 0 P P1 K1 ols Wp 0 X X1 A # Equation-by-equation TSLS tsls C 0 P P1 W ; 0 G T A Wg P1 K1 X1 tsls I 0 P P1 K1 ; 0 G T A Wg P1 K1 X1 tsls Wp 0 X X1 A ; 0 G T A Wg P1 K1 X1 # Now set the model up as a system system name="Klein Model 1" equation C 0 P P1 W equation I 0 P P1 K1 equation Wp 0 X X1 A identity P = X - T - Wp identity W = Wp + Wg identity X = C + I + G endog C I Wp P W X end system # and estimate it in various ways estimate "Klein Model 1" method=3sls estimate "Klein Model 1" method=fiml estimate "Klein Model 1" method=liml
