Matlab制作视频并转换成gif动态图的两种方法

%% f(t)-->f(4*t+12) 并且验证%%
function Signal_change()
tic%记录程序运行时间
figure
n = 0;
t = -2*pi:0.01:2*pi;
y = sin(t);%周期为2*pi
y_result = sin(4*t);
plot(t,y,'b');
xlabel('t');
ylabel('Amplitude');
n = n+1;
F(n) = getframe(gcf);%获取当前图形并且保存到F（n）中
%saveas(gcf,['C:\Users\Administrator\Desktop\图片\',num2str(n),'.jpg']);
hold on
%% 验证%%
%f(4*t+12) = f[4*(t + 3)].遵循先外后里原则具体的图形变换实现为：
%1 、先将f(t)压缩4倍
%2、再将压缩的图形左移3个单位。
y_now = sin(t);
h = plot(t,y_now,'--','YDatasource','y_now');
 %% f(t)-->f(4*t)%%
for i = 1:0.1:4
y_now = sin(i*t);
refreshdata(h,'caller');
drawnow;
n = n+1;
F(n) = getframe(gcf);
%saveas(gcf,['C:\Users\Administrator\Desktop\图片\',num2str(n),'.jpg']);
pause(0.01);
end
%保留f(4*t)的图形
n = n+1;
plot(t,y_result,'r');
F(n) = getframe(gcf);
%saveas(gcf,['C:\Users\Administrator\Desktop\图片\',num2str(n),'.jpg']);
hold on
%% f(4*t)-->f(4*t+12)%%
for j = 0:0.1:3
y_now = sin(4*(t + j));
refreshdata(h,'caller');
drawnow;
n =n+1;
pause(0.1);
legend('sin(t)','sin(4t+12)','sin(4t)');
F(n) = getframe(gcf);
%saveas(gcf,['C:\Users\Administrator\Desktop\图片\',num2str(n),'.jpg']);
end
movie(F);%生成视频
movie2avi(F,'imovie1.avi','FPS',3);%设置视频的帧率为3，数值越大速度越快

function Avi()
%%大小写非常重要%% 
n = 64;
WriterObj = VideoWriter('wmw');
WriterObj.FrameRate = 100;%此语句必须放置在
%WriterObj = VideoWriter('wmw')语句之后才能设置帧率
open(WriterObj);for i=1:n%逐次取出文件frame=imread(['C:\Users\Administrator\Desktop\图片\',num2str(i),'.jpg']); %读取文件writeVideo(WriterObj,frame);end close(WriterObj);