could you be more specific, please? Single equation or VAR, ARMA or not,
etc. etc.

thanks,
sven

Hi Sven, I'm refering to the Roots in an ARMA model, the thing is that I need to build the graph for the unit root test in ARMA models, for which I require acces (through code) to the Roots, Imaginary, Modulus and Frecuency in the Unit Root Test Results in the ARMA models, I also need to know how to "draw" a circle in a graph with gretl, it seems I can't get gnuplot to recognize the circle equation... any help would be welcome...

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Marcos Larios Santa Rosa