Hello, Mr. Stefan, Thanks. Should we put following codes before each plot command? cafix = gca(); cafix.tight_limits="on"; cafix.auto_scale="off"; cafix.data_bounds = [-0.5,-2;0.5,2]; -- Sent from: http://mailinglists.scilab.org/Scilab-users-Mailing-Lists-Archives-f2602246.html