A(:):将矩阵A中的每列合并成一个长的列向量
示例如下:
>> A = rand(2,3)
A =
0.6925 0.3965 0.7802
0.5567 0.0616 0.3376
>> B = A(:)
B =
0.6925
0.5567
0.3965
0.0616
0.7802
0.3376
示例如下:
>> A = rand(2,3)
A =
0.6925 0.3965 0.7802
0.5567 0.0616 0.3376
>> B = A(:)
B =
0.6925
0.5567
0.3965
0.0616
0.7802
0.3376