A=imread(\'2.jpg\');
J=imrotate(A, 30);
subplot(1,2,1);imshow(A);title(\'原图\');
subplot(1,2,2);imshow(J);title(\'旋转后的图\');

I=imread(\'2.jpg\');
F=imresize(I,1.5,\'nearest\');
imwrite(F,\'3.jpg\');
S=imresize(I,0.5,\'nearest\');
imwrite(S,\'4.jpg\');
J=imresize(I, [190,400],\'nearest\');
imwrite(J,\'5.jpg\');
figure(1);imshow(I);
figure(2);imshow(F);
figure(3);imshow(S);
figure(4);imshow(J);