How to save figure frames as gif file?

Hi all,

I am having a problem while saving my figure frames as a gif file. I am using this code -

for i = 1:Leng
    figure(1); 
    hold on
    title(['Time = ' num2str(t(i))]);
    plot(px(i,:),py(i,:),'o','MarkerSize',4,'color',[1 0 0]);
    pause(0.2);
    F(i) = getframe(gcf);
    drawnow
end

%Making mnovie
writerObj = VideoWriter('Particle02.gif');
writerObj.FrameRate = 10;
open(writerObj);

% write the frames to the video
for i=1:length(F)
    frame = F(i) ;    
    writeVideo(writerObj, frame);
end
% close the writer object
close(writerObj)

Although I am saving it as '.gif' file, it is being saved as '.avi' file.

Can anyone please help? Any feedback will be much appreciated!

Answer 1

[Image Analyst]

See instructions here:

https://www.mathworks.com/matlabcentral/discussions/highlights/741369-new-in-matlab-r2022a-export-graphics-to-animated-gifs

Answer 2

[Ashfaq Ahmed]

Thanks! I actually solved it by using this script -

for i = 1:Leng
    figure(1); 
    filename = 'Day02_Path.gif';
    set(gcf,'Position',[-1754,65,1166,1272],'Resize','off');hold on
    xlim([-2050099.543264665 -1948716.788232876]); 
    ylim([444467.6319204442 585529.1910998748]);
    
    hold on;
    
    title('02-April-2015','fontsize',20);
    %subtitle(['Time (in seconds) = ' num2str(t(i))],'fontsize',20);
    plot(px(i,:),py(i,:),'o','MarkerSize',5,'color',[0 0 1]);
    pause(0.02);
    drawnow
    frame = getframe(1);
    im = frame2im(frame);
    [imind,cm] = rgb2ind(im,256);
    if i == 1;
         imwrite(imind,cm,filename,'gif', 'Loopcount',inf);
    else
         imwrite(imind,cm,filename,'gif','WriteMode','append');
    end
    scalebarpsn('location','sw'); hold on;
end