给出完整代码
时间: 2023-07-09 11:24:46 浏览: 39
完整代码如下所示:
```
% 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);
% 绘制电场矢量轨迹并保存为gif格式
filename = 'electric_field.gif';
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
% 保存gif
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
```