On Sat, 31 Oct 2009, Henrique wrote: > The theory tells me that b[2] < 0 and b[3] > 0 and I estimate "n" models, > > Model 1: Y = b[1] + b[2]*X1 +b[3]*Z1 > Model 2: Y = b[1] + b[2]*X2 +b[3]*Z2 > . > . > . > Model n: Y = b[1] + b[2]*Xn +b[3]*Zn > > Now I would like to know if it is possible to obtain a list with the > models where the estimated parameters follow the theory (i.e. b[2] < 0 > and b[3] > 0).
You can't create a list of models as such, in gretl, but you have the condition if $coeff[2] < 0 && $coeff[3] > 0 # do something endif The "something" might be saving the model specification as a string, or saving the ID numbers of the X and Z series as a row of a matrix, or (in the GUI) re-running the estimation command so as to save a named model, as in model$i <- ols ... Allin Cottrell
