matlab中reshape函数的用法

1.函数功能：变换矩阵维度

2.转换规律：按列读，按列存

 A =[1,  2,  3,  4;
     5,  6,  7,  8;
     9, 10,  11, 12 ];
        
C = reshape(A,2,6)

C =

     1     9     6     3    11     8
     5     2    10     7     4    12