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????????

Answer 1

[Dishant Arora]

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);

Answer 2

[Dishant Arora]

 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');

[kavya saxena]

hi thankx for reply...but it will not give a waveform. it gives a rectangular inclind plane, not like a wave propagation in surface. there is no such feeling of wave in it.plz give some more suggestion

[Dishant Arora]

http://www.mathworks.nl/matlabcentral/answers/33794#answer_42445

check this out, it works

[kavya saxena]

i get this type of curve but i want the surface plot,as the wave pattern is shown on a surface or i can say in a plane.

[Dishant Arora]

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]

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....