本人将稀疏矩阵A 通过sparse方法生成 矩阵B 。按理说B矩阵括号里面应该对应的是 A矩阵中非零元素的行列标,但是为什么变换后矩阵 B括号里的列标都为3 呢?请高人指点!
A:
1 1 0 0 0 0 0 0 0 0 0 0 0 0
1 1 0 0 0 0 0 0 0 0 0 0 0 0
0 0 1 1 0 0 0 0 0 0 0 0 0 0
0 0 1 1 0 0 0 0 0 0 0 0 0 0
0 0 0 0 1 0 0 0 0 0 0 0 0 0
0 0 0 0 0 1 1 1 1 0 0 0 0 0
0 0 0 0 0 1 1 1 1 0 0 0 0 0
0 0 0 0 0 1 1 1 1 0 0 0 0 0
0 0 0 0 0 1 1 1 1 0 0 0 0 0
0 0 0 0 0 0 0 0 0 1 1 0 0 0
0 0 0 0 0 0 0 0 0 1 1 0 0 0
0 0 0 0 0 0 0 0 0 0 0 1 0 0
0 0 0 0 0 0 0 0 0 0 0 0 1 0
0 0 0 0 0 0 0 0 0 0 0 0 0 1
B:
(7244,3) 1
(7245,3) 1
(7246,3) 1
(7247,3) 1
(7248,3) 1
(7249,3) 1
(7250,3) 1
(7251,3) 1
(7252,3) 1
(7253,3) 1
(7254,3) 1
(7255,3) 1
(7256,3) 1
(7257,3) 1