Animating plot in a for loop

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Ege Arsan 2021-1-16

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https://ww2.mathworks.cn/matlabcentral/answers/718655-animating-plot-in-a-for-loop

编辑： Cris LaPierre 2021-1-16

I have the following figure and i want to animate it with addpoints but couldn't work it out.

dy is the displacement from an ode solver, which is a matrix of 549x4 doubles and n = 2, so i only plot the dy(:,3) and dy(:,4)

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Image Analyst 2021-1-16

I don't know. MATLAB cannot convert your image into code. Attach your code so we can run it. What is "addpoints" - is that a built-in or custom function? Attach dy in a .mat file. Make it easy to help you not hard.

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Ege Arsan 2021-1-16

Sorry. Here are the codes. You can run the code Vibration_Plot.m and enter the forces as '0' (they should be in quotes). The MDK.m is only for generating the matrices.

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Cris LaPierre 2021-1-16

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https://ww2.mathworks.cn/matlabcentral/answers/718655-animating-plot-in-a-for-loop#answer_599395

Use the animatedline function. Follow this example from the documentation.

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Cris LaPierre 2021-1-16

编辑：Cris LaPierre 2021-1-16

在 MATLAB Online 中打开

It's easier to debug one thing at a time. Once you have the ode working, then focus on the animation. It's usually a good idea to only include in the for loop code that needs to be run multiple times. The title, labels, and grid commands can be set once, so move those before the loop.

It is my suspicion you will have to create an animated line for each subplot.

Here is a simplified working example that you can modify to your needs.

L=animatedline;
axis([ti,tf,-4,4])
title(['Response q',num2str(i)]); 
xlabel('Time, seconds'); ylabel('Displacement, m');
grid on;
for i = 1:length(dy)
    addpoints(L,t(i),dy(i,1));     
    drawnow
end 