How to save figure frames as gif file?

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Ashfaq Ahmed
Ashfaq Ahmed 2022-4-12
回答： Ashfaq Ahmed 2022-4-13
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!

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Image Analyst
Image Analyst 2022-4-12

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Ashfaq Ahmed
Ashfaq Ahmed 2022-4-13
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

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