Why is my surface graph not animating?

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Richard Batelaan
Richard Batelaan 2020-7-4
回答： Gouri Chennuru 2020-7-7
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
  1 个评论
Walter Roberson
Walter Roberson 2020-7-4
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.

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回答（1 个）

Gouri Chennuru
Gouri Chennuru 2020-7-7
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 !

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