Change time of a matlab simulation

I have a trajectory simulation with a time setup as follows:

T = 100;          % Simulation time
  dt = 1;
  N = T/dt + 1;
for ii = 2:N
....
plot(x1,y1,'b--')
      hold on
      plot(x1(ii1),y1(ii1),'r*')
      hold off
      xlim([-10,10]/2+3)
      ylim([-10,10]/2)
      xlabel(num2str(ii1*dt))
      pause(dt*0.1)
end

I would like the simulation to run faster, for say T = 5-10, but when I do that I only see the first 5-10 "seconds" of the simulation. Do I need to change the pause and/or the dt?

Answer 1

[Mischa Kim]

Kelilah, you could use something like:

 dt = 1;
 T  = 100;
 t  = 0:dt:T;
 x1 = 1:100;
 y1 = sin(x1);
 plot(x1,y1,'b--')
 for ii = 2:numel(t)
    hold on
    plot(x1(ii),y1(ii),'r*')
    hold off
    xlim([0 100])
    ylim([-2 2])
    xlabel(num2str(ii*dt))
    pause(dt*0.1*(2 - 1.5*(t(ii)>=20 && t(ii)<=40)))
 end

I adapted your code/requirements to better show what is happening. The above simulation runs faster between t = 20 and t = 40 by simply reducing the pause time in that simulation range. Of course, you need to make sure that your data (x1,y1) correspond to the time vector t.