Plotting a signal between 8 and 15 sec

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Ruth Hognestad
Ruth Hognestad 2018-8-31
回答： M 2018-8-31
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.

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M
M 2018-8-31
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.

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