Index: mttroot/mtt/bin/trans/m/mtt_optimise.m
==================================================================
--- mttroot/mtt/bin/trans/m/mtt_optimise.m
+++ mttroot/mtt/bin/trans/m/mtt_optimise.m
@@ -54,11 +54,10 @@
   while (abs(error_old-error)>criterion)&&(iterations<max_iterations)
     iterations = iterations + 1;
     error_old_old = error_old;
     error_old = error;
     eval(sprintf("[t,y,y_theta] = mtt_s%s(system_name,theta,free);",method)); # Simulate system
-plot(t,y(:,2:3));
     error = 0; 
     J = zeros(n_th,1);
     JJ = zeros(n_th,n_th);
     for i = 1:n_y
       E = weight(:,i).*(y(:,i) - y_s(:,i)); # Weighted error