create a gif in matlab

main.m
% Set up parameters
numFrames = 20; % number of animation frames
radius = 10;   % starting radius of circle
delayTime = 0.2; % delay between frames in seconds

% Initialize figure
figure;

% Loop through frames
for i = 1:numFrames
    % Generate image for this frame
    img = zeros(100,100); % start with a blank image
    img = insertShape(img, 'circle', [50 50 radius], 'LineWidth', 2, 'Color', 'red'); % add circle
    imshow(img); % show image
    
    % Add frame to array
    if i == 1
        [A,map] = rgb2ind(frame2im(getframe(gcf)),256,'nodither'); % initialize array
        A(1,1,1,numFrames) = 0;
    else
        A(:,:,1,i) = rgb2ind(frame2im(getframe(gcf)),map); % add frame
    end
    
    % Update parameters for next frame
    radius = radius + 5; % increase circle radius for next frame
    
    % Pause for specified time
    pause(delayTime);
end

% Write array to GIF file
imwrite(A,map,'animation.gif','DelayTime',delayTime,'LoopCount',inf);
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