Multiple plotting issue?

Hi everyone,

As per my script i expect an oputput of three plots but I get only one plot.

May someone suggets how i can fix this.

As per code there shoudl be three plots for t=1, 2 and 3, but i get only one plot for t=3.

clear all
clc
xs=8; 
v=3; 
L=20; 
ta=0.2; 
t=1:1:3; 
for k=1:length(t)
    n=1:1:40; 
    x=0:0.1:20; 
    omga = zeros(1,length(n)); 
    F = zeros(1,length(n)); 
    u = zeros(length(n),length(x)); 
    for j=1:length(n)
        F(j)=exp(-((n(j)*pi*v*ta/L).^2)/4);
        u(j,:)=sin(n(j)*pi*xs/L)*F(j)*sin(n(j)*pi*x/L)*cos(n(j)*pi*v/L*t(k));    % no loop needed
    end
    us = sum(u); 
    plot(x,us)
end

Answer 1

[Ankit]

Few recommendations to your code:

• try to define all the variable before loop
• don't use clear all in your code. Calling clear all decreases code performance, and is usually unnecessary. To clear one or more specific variables from the current workspace use clearvars instead

clc
xs=8;
v=3;
L=20;
ta=0.2;
t=1:1:3;
n=1:1:40;
x=0:0.1:20;
us = zeros(1,length(x));
omga = zeros(1,length(n));
F = zeros(1,length(n));
u = zeros(length(n),length(x));
for k=1:length(t)    
    for j=1:length(n)
        F(j)=exp(-((n(j)*pi*v*ta/L).^2)/4);
        u(j,:)=sin(n(j)*pi*xs/L)*F(j)*sin(n(j)*pi*x/L)*cos(n(j)*pi*v/L*t(k));    % no loop needed
    end
    us(k,:) = sum(u);
end
plot(x,us);

[Andi]

May you suggest me how can i can make a video of these plots?

[Ankit]

what do you mean by video of these plots? you mean how one by one all your three plots are plotted?

here you can see some options: Get figures and use them to build a video.avi - (mathworks.com). You can also search on MATLAB File Exchange

[Andi]

Exactly, I want to build a video of all these plot. Thanks for sharing