Animation video from data points, giving error below

Question

muhammad choudhry 2021-9-2

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1445124-animation-video-from-data-points-giving-error-below

回答： muhammad choudhry 2021-9-3

Hi,

I am making the the animation from the data points. but I am gettig the error below, can anyone help me come over this error. Also if anyone can help me recording this data like 1 point for 1 fps that be great. Below is the error and the code I am using.

Error:

Error using VideoWriter/writeVideo (line 414)

Requested 968x1902x3x2184 (11.2GB) array exceeds maximum array size preference. Creation of

arrays greater than this limit may take a long time and cause MATLAB to become

unresponsive.

Error in graphanimation (line 28)

writeVideo(video,F);

Code:

close all; clear all; clc;

%plotting the graph animation

a=readmatrix('pressure_experiement.ods');

x=a(:,7);

y=a(:,11);

curve = animatedline('color','b','Marker','x');

set(gca,'XLim',[0 500],'YLim',[0 90]);

grid on;

title('CircleSide_Awaypoint');

xlabel('Head (mm)');

ylabel('Pressure (mmH2o)');

set(gcf,'Units','normalized','OuterPosition',[0 0 1 1]);

for i=1:length(x)

addpoints(curve,x(i),y(i));

drawnow

F(i)=getframe(gcf)

%pause(0.5)

end

hold all

video = VideoWriter ('away.avi','MPEG-4')

video.FrameRate = 1;

open(video)

writeVideo(video,F);

close(video)

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Answer 1

Konrad 2021-9-2

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https://ww2.mathworks.cn/matlabcentral/answers/1445124-animation-video-from-data-points-giving-error-below#answer_779359

编辑：Konrad 2021-9-2

在 MATLAB Online 中打开

Hi Muhammad,

it seems that the video you are trying to create is too large to fit into memory. You can either

run the code on a machine with more RAM (like a server); or if such a computer is not available
try to make the figure you are capturing smaller (your frames currently have a resolution of 1902x968 pixels). Change the line

set(gcf,'Units','normalized','OuterPosition',[0 0 1 1]);

to e.g.

set(gcf,'Units','pixels','Position',[0 0 1280 720]);

to get a resolution of 1280x720. If you still get the error, further reduce the resolution.

Best, Konrad

EDIT: --------------------------

If you need the high resolution, another way to reduce memory requirements might be to split the animation into multiple videos (e.g. 10 videos each containing 218 frames or so) and then use a video editing software (e.g. avidemux) to merge videos.