将下面代码的图像输出结果改为.gif% 定义常数 u0 = 4 * pi * 1e-7; % 真空中的磁导率 e0 = 8.8541878176e-12; % 真空中的介电常数 c = 299792458; % 真空中的光速 % 定义参数 T = 2*pi; % 周期 E0 = 1; % 电场振幅 % 计算电场分布 t = linspace(0, T, 500); Ex = E0 * cos(2*pi/T * t); Ey = E0 * cos(2*pi/T * (t-T/4)); Ez = E0 * cos(2*pi/T * (t-T/2)); Ex2 = E0 * cos(2*pi/T * (t-3*T/4)); Ey2 = E0 * cos(2*pi/T * t); figure; for i=1:length(t) plot3([0 Ex(i)], [0 Ey(i)], [0 Ez(i)], 'r', 'LineWidth', 2); hold on; plot3([0 Ex2(i)], [0 Ey2(i)], [0 -Ez(i)], 'b', 'LineWidth', 2); axis([-1 1 -1 1 -1 1]); xlabel('x'); ylabel('y'); zlabel('z'); title('Electric Field Vector Trajectory'); view(45, 30); drawnow; pause(0.01); if i<length(t) clf; end end

把最后一行的 "end" 改为 "end-1"，并在最后一行加上以下代码，即可将输出结果保存为gif格式：

filename = 'electric_field.gif';
for i = 1:length(t)
    frame = getframe(gcf);
    im = frame2im(frame);
    [imind,cm] = rgb2ind(im,256);
    if i == 1
        imwrite(imind,cm,filename,'gif','Loopcount',inf,'DelayTime',0.01);
    else
        imwrite(imind,cm,filename,'gif','WriteMode','append','DelayTime',0.01);
    end
end