a=[1,2,3;4,5,6;7,8,9];
a=reshape(a,1,9); a=[1,4,7,2,5,8,3,6,9];
a=reshape(a,9,1); a=[1;4;7;2;5;8;3;6;9];
a=[1,2,3,4,5,6,7,8,9];
a=reshape(a,3,3); a=[1,4,7;2,5,8;3,6,9];
也就是说，reshape以列为主体。
[Matlab.Matrix] reshape
原文：http://www.cnblogs.com/southernduck/p/3992150.html
