Why is my surface graph not animating?

I am trying to animate a surface defined by p(x,y,t), but drawnow and pause do not seem to work. Here is my code:

figure
for l=1:100
    clf
    surf(x, y, p(:,:,l))
    zlim([-2 2])
    shading interp
    drawnow
    pause(0.2)
end

[Walter Roberson]

Do not use clf in your loop.

You do not have "hold on" set, so already the surf() call is going to cla() for you, no need to force it to build an entire new axes.

Answer 1

[Gouri Chennuru]

Hi Richard,

you can refer to this documentation link which shows how to animate a surface.

clf deletes all graphics objects whose handles are not hidden from the current figure so, you can avoid using clf in the code snippet.

See if this example offers some idea on how to do:

[X,Y] = meshgrid(linspace(-15, 15, 50)); 
fcn = @(x,y,k) k*x.^2 + y.^2; 
v = [1:-0.05:-1; -1:0.05:1]; 
for k1 = 1:2 
for k2 = v(k1,:) 
 surfc(X, Y, fcn(X,Y,k2)) 
axis([-15 15 -15 15 -300 500]) 
 drawnow 
pause(0.1) 
end 
end

Hope this helps !