Obtaining sparse matrix indices

2020 8 31
1 个回答
回答已采纳
更新时间：2020 8 31
16 次查看（30 天）

0 个投票

Hi,
I am using sparse function to obtain non-zero elements of a matrix. for example,
s= sparse(M)
(1,1) -5.0000
(2,1) 1.0000
(8,1) 5.0000
(1,2) 5.0000
(2,2) -6.0000
Now I want to creat3 3 arrays containing the row indices, column indices and value indices of the output. For intance,
A_i= [1,2,8,1,2] : row vector, i of Matrix(i,j).
A_j= [1,1,1,2,2]: row vector, j of Matrix(i,j).
A_s= [-5,1,5,5,-6]: row vector, value of the element: A(A_i(m),A_j(m))=A_s(m).
How can I create the matrix A from the output of the sparse function?

请先登录，再回答此问题。

更多回答（0 个）

类别

在 帮助中心 和 File Exchange 中查找有关 Sparse Matrices 的更多信息

产品

版本

R2019a

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by