MATLAB: How to simulate time response of dynamic system to arbitrary inputs without shown the arbitary input on the plot

Question

How can I simulate time response of dynamic system to arbitrary inputs without shown the arbitary input on my plot?

H = [tf([2 5 1],[1 2 3])];
[u,t] = gensig('square',4,10,0.1);
lsim(H,u,t)

Answer 1

If you assign outputs to lsim, you don't get the specialized plot and simply get the output variables. So, if you add an extra line to your code as follows, you're good to go:

H = [tf([2 5 1],[1 2 3])];
[u,t] = gensig('square',4,10,0.1);
[yout,tout]= lsim(H,u,t);
plot(tout,yout)

- Sebastian