Plotting a signal between 8 and 15 sec

Hi I need help plotting a signal between 8 and 15 sec. The signal is 3001x1, is simulated for 30 seconds and has a sampling time of 10ms. I can plot the signal with plot(u), but I don't get the signal in the range I want.

Thanks for any suggestions.

Answer 1

[M]

What is the problem exactly?

You have your signal u 3001x1, with a sampling time of 10ms. It means that u(1) is the value of the signal at t=0s and u(3000) is the signal at t=30s. So u(800) is the value at time = 8 sec, and u(800:1500) is the value between time t=8 sec to 15 seconds.