I have created a video object to plot a graph which progresses with time. I have a large number of plotting data points due to which the graph progresses slowly. How can I reduce this time?

 video = 0;
    if video==1 
        vidObj = VideoWriter('video.avi','Motion JPEG AVI');
        open(vidObj); 
    end

    for i=1:numel(A1)

    % figure     
    bild = figure(1);
    subplot(1,2,1);
    plot(A1(1:i),A2(1:i),A1(i),A2(i),'*r');
    xlabel('displacement [mm]'); ylabel('force [kN]');
    axis([min(A1) max(A1) min(A2) max(A2)]);
    title(['Time: ' num2str((i-1)/84,'%4.0f') 's']);
    grid on;

Answer 1

[Iain]

Instead of calling the figure, the subplot, and then freshly plotting the line and the most recent point, try:

a = plot(A1(1),A2(1),A1(1),A2(1),'*r');

for i = 1:numel(A1)

set(a(1),'XData',A1(1:i),'YData',A2(1:i))

set(a(2),'XData',A1(i) ,'YData',A2(i))

drawnow

end

[Siddharth]

Error using handle.handle/set Invalid or deleted object.

Error in mov2 (line 27) set(a(1),'XData',A1(1:i),'YData',A2(1:i))

it gives this error if i incorporate it in my program.