清空筛选条件
清空筛选条件

Wrong output from eigs function

2 次查看（过去 30 天）
Matteo Aluffi
Matteo Aluffi 2020-12-4
评论： Ameer Hamza 2020-12-4
I've been having problmens when using the eigs command. So i tried just tiping [A,V]=eigs(eye(10)) where i expected two identity matrices as output. Except that it returns two 10x6 matrices whose non zero input are not even one. What am i doing wrong?

请先登录，再回答此问题。

采纳的回答

Ameer Hamza
Ameer Hamza 2020-12-4
编辑：Ameer Hamza 2020-12-4
According to the documentation of eigs(), by default, it returns 6 largest eigenvalues and their corresponding eigenvectors. Matrix V contains the eigen values along the diagonal, whereas matrix A contains six eigen vectors, one in each column.
  3 个评论
显示 1更早的评论
KALYAN ACHARJYA
KALYAN ACHARJYA 2020-12-4
编辑：KALYAN ACHARJYA 2020-12-4
@Ameer Thanks, at first glance, I didn't see it.
d = eigs(A) %returns a vector of the six largest magnitude eigenvalues of matrix A
More:
d = eigs(A,k) returns the k largest magnitude eigenvalues.
Ameer Hamza
Ameer Hamza 2020-12-4
Yes, that correct. In Matteo's case, following two will be same
[A,V]=eig(eye(10))
% or
[A,V]=eigs(eye(10),10)

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 Linear Algebra 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