How to create a movie?

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Rajawarman Thiruselvam
Rajawarman Thiruselvam on 8 Jul 2021
Answered: Bhavya Chopra on 8 Jul 2021
Hi everyone!! i have a code for animated line, here how to create a movie for this program??
clear all
close all
clc
figure
h1=animatedline('linewidth',3,'color','[0 0 0.5]');
h2=animatedline('linewidth',3,'color','[1 0.5 0]');
axis([0 71 1 20])
axis ij
grid on
x1 =0:71;
n=100;
xx1=linspace(x1(1),x1(end),n);
y1=[1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1];
yy1=interp1(x1,y1,xx1);
y2=[2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 3 3 3 3 3 3 3 3 3 3 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3];
yy2=interp1(x1,y2,xx1);
for ci=1:n
addpoints(h1,xx1(ci),yy1(ci));
addpoints(h2,xx1(ci),yy2(ci));
pause(0.05);
drawnow
end

Accepted Answer

Bhavya Chopra
Bhavya Chopra on 8 Jul 2021
I understand that you want to save your animated plot as a video. The program can be modified as follows to save the plot:
outputVideo = VideoWriter(fullfile(pwd, 'plot_movie.avi')); % Create VideoWriter object
outputVideo.FrameRate = 20; % Set frame rate for corresponding pause duration
open(outputVideo)
for ci=1:n
addpoints(h1,xx1(ci),yy1(ci));
addpoints(h2,xx1(ci),yy2(ci));
pause(0.05);
drawnow
img = getframe % Obtain figure as movie frame
writeVideo(outputVideo, img); % Write image to video
end
close(outputVideo) % Close video file
Please refer to documentation for getframe function and VideoWriter for more information.

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