Here is a general sketch to create such animation. This code will write the animation frames to a video, you can modify the code according to your requirement.
animationWriter = VideoWriter('animation_file');
open(animationWriter);
for i=1:4000
% create data for circle plot or any other processing you want to do
f = ....; % write your plotting command here using plot() or any other graphics primitive
frame = getframe(gcf);
writeVideo(animationWriter, frame);
end
close(animationWriter);
