Sparse knonecker product of large and several matrices

9 次查看（过去 30 天）
Fernando
Fernando 2014-3-26
评论： Fernando 2014-3-26
Hi,
I'm trying to create a sparse kronecker product without actually generating the kron product and then generating the sparse matrix. Is there a way to do this? For example
E=eye(100);
I=ones(20);
K=sparse(kron(E,I));
Right now the code first generates the kron product and then keeps on the information of non-zero elements. As I need to do this lots of time because I need to generate and keep in memory different K matrices (K1, K2, ... K200, for E1,...E200, and I1,...I200), the generation of the kron product uses all my memory. Is there anyway I could go from the E's and I's to the K's without generating the full matrices?
Thanks,

请先登录，再回答此问题。

采纳的回答

Matt J
Matt J 2014-3-26
编辑：Matt J 2014-3-26
E=speye(100);
I=ones(20);
K=kron(E,I);
  3 个评论
显示 1更早的评论

请先登录，再进行评论。

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Sparse Matrices 的更多信息

标签

Community Treasure Hunt

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

Start Hunting!

Translated by