How to plot sin knowing amplitude
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Greetings, I'm still new to Matlab. I have a questiond and i hope you'll be able to help me. Is there a way to plot a sinusoidal wave by knowing the upper and lower limit of the wave? So i have for example 0.3 and 1.4 and i want to plot a sinusoidal wave between those two limits.
Thank you
回答（1 个）
Rik
2017-9-13
Try a tutorial on Matlab. This question is probably covered on most tutorials.
upper_limit=1.4;
lower_limit=0.3;
amp=(upper_limit-lower_limit)/2;
avg=(upper_limit+lower_limit)/2;
t=linspace(0,2*pi,20);
y=amp*sin(t)+avg;
figure(1),clf(1)%optional line
plot(t,y)
xlabel('angle'),ylabel('y')%optional line
legend(sprintf('Sine wave with amplitude %.2f and mean of %.2f',amp,avg))%optional line
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