Output a video in MATLAB

Question

Marios Christofides 2020-8-6

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/576280-output-a-video-in-matlab

评论： Sudheer Bhimireddy 2020-8-7

I'm attempting to make a video of my plot in MATLAB and when I run it, the output plot is just blank and it doesn't show anything but the code still runs. Any feedback?

for t = 2:100001
time=(t-2)*dt;
f=a0*sin(time/(2*pi)); 
massspring(:,t) = VibrationPosition(massspring(:,t-1), time, a0, pi,  m, k, c, f, dt, n);
drawnow
F(t) = getframe(gcf);
end
video = VideoWriter('Helix.avi','Uncompressed AVI');
open(video)
writeVideo(video,F);
close(video)
figure(1);
plot(t3, massspring(1,:), t3, massspring(2,:));
xlabel('Time (s)')
ylabel('x_1(t), x_2(t)')
title('Timestep 0.01')
title('Mass Position and Velocity over time')
legend('Mass Position','Mass Velocity')

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Answer 1

Sudheer Bhimireddy 2020-8-6

0
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https://ww2.mathworks.cn/matlabcentral/answers/576280-output-a-video-in-matlab#answer_476281

在 MATLAB Online 中打开

Try this

video = VideoWriter('Helix.avi','Uncompressed AVI');
open(video);
h=figure(1);
hold on;
for t = 2:100001
    % Do your stuff
    plot();
 
    F = getframe(gcf);
    writeVideo(video,F);
end
% Once you have all the timesteps plotted then close the videwriter
close(video);

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Marios Christofides 2020-8-7

I changed the directory but the original problem still persists except the axis are showing but nothing is being plotted.

Sudheer Bhimireddy 2020-8-7

在 MATLAB Online 中打开

So, are you not getting the "permission denied" message anymore?

If you are able to see the axis and labels and title etc., then the problem might be with the data itself or you are restricting the axis limits so that the data is not in the visible window. Try setting