animated sine wave continously

Hi alll, i'd like to make sine wave with three variation and walk continously, but i end up make it uncontinously,

here the script that i modified, any suggestion to solve it?

TIA

close all
subplot(1,2,1)
t = 0:0.01:10*pi;
phase=pi;
y = cos(t+phase);
yH=hilbert(y);

for j = 1:length(t) 
    hold on 
    plot(t,y) 
    plot(t,0.5*imag(yH))
    plot(t,y+imag(yH))
    hold off
    axis([0 8*pi -2 2])   % moving 2 cycles would mean the end would be 4pi + 2*2pi = 8pi 
                          % you can keep the axis endpoints according to your need 
    grid on 
    pause(0.1) 
    %hold on 
     if j ~= length(t) 
        clf 
     end 
    t = t + 0.1;  % used 0.1 increment as elements in t have 0.1 difference 
                  % Also, as y is already defined earlier, this change in t will not change y   
end;

[Adam Danz]

@nirwana, creating an animation by iteratively calling plot() is very inefficient. In your demo, three lines are created and and eliminated over 3000 times. Instead, re-use the same line(s) and update the values on each iteration. @Les Beckham demonstrates this in the answer below.

Another approach is to use animatedline.

Answer 1

[Les Beckham]

This should get you started. Adjust as desired.

Note that the animation won't show here, but I tested it my local copy of Matlab.

t = linspace(0, 4*pi, 1000);
y = sin(t);
hl = plot(t, y);
grid on
xlim tight
ylim padded
for i=1:1000
    set(hl, 'YData', circshift(get(hl, 'YData'), 1)) 
    % you may want -1 here                       ^
    % depending on which direction you want to scroll
    drawnow
end

[nirwana]

thanks @Les Beckham, it helps alot !!

[Les Beckham]

You are quite welcome.