how to plot a wave propagation using surface plot.

Question

kavya saxena 2012-9-1

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https://ww2.mathworks.cn/matlabcentral/answers/47166-how-to-plot-a-wave-propagation-using-surface-plot

hi all, i m facing a problem to ploting a wave function in 3d plot or surface or contour plot.i ploteed that wave in 2d. the coding for that i used is f=1.0e6; fs=f*100; n=3; t=0:1/fs:n/f; y=15*(1-cos(2*pi*f*t/n)).*sin(2*pi*f*t); plot(t,y); ylabel('amplitude'); xlabel('time'); now i have to plot this function as surface plot or counter plot.how i can do this????????

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Answer 1

Dishant Arora 2012-9-4

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https://ww2.mathworks.cn/matlabcentral/answers/47166-how-to-plot-a-wave-propagation-using-surface-plot#answer_57813

在 MATLAB Online 中打开

you can add phase angle to get the desired result.

f=1.0e6;
n=3; 
t=linspace(0,f,100);
phi=linspace(-pi,pi,100);
y=15*(1-cos(2*pi*f*t/n+phi)).*sin(2*pi*f*t+phi);
plot3(t,phi,y);
figure(2)
[T Phi]=meshgrid(t,phi);
Y=15*(1-cos(2*pi*f*T/n+Phi)).*sin(2*pi*f*T+Phi);
surf(T,Phi,Y);

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Answer 2

Dishant Arora 2012-9-1

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/47166-how-to-plot-a-wave-propagation-using-surface-plot#answer_57638

在 MATLAB Online 中打开

 f=1.0e6;
fs=f*100;
n=3; 
t=0:1/fs:n/f;
T=meshgrid(t);
y=15*(1-cos(2*pi*f*T/n)).*sin(2*pi*f*T);
surf(T,y);
ylabel('amplitude'); 
xlabel('time');

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Dishant Arora 2012-9-3

well, i am not getting what you want. btw, check out the following link. http://www.mathworks.com/matlabcentral/fileexchange/35305-matlab-plot-gallery-surface-plot-1/content/html/Surface_Plot_1.html

may be you are looking for this kinda plot.

kavya saxena 2012-9-4

oh yes..i want this kind of curve, but using my function i m not getting this plot.in above there is three vatiable but in my case there is variation with time.so plz help me to make it....

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