How to apply function eig to an array of matrices?

3 次查看（过去 30 天）
Kaixiang Su
Kaixiang Su 2019-7-7
回答： Bruno Luong 2019-7-7
I am trying to find the eigenvectors and eigenvalues of an array of matrices without doing a for loop. A simple example would be like:
A[:,:,1] = [1,2;3,4]
A[:,:,2] = [3,4;5,6]
...
A[:,:,10] = [19,20;21,22]
And the matrix elements can be arbitrary. My question is whether there is an efficient way to solve the eigen problem of each of these matrices without doing a for loop? Can tips of vectorization help us here?

请先登录，再回答此问题。

回答（2 个）

the cyclist
the cyclist 2019-7-7
编辑：the cyclist 2019-7-7
cellfun(@eig,A,'UniformOutput',false)
or something like this, will be at the heart of your solution. You might need to read the documentation for cellfun and/or eig to get exactly the output you want.
Bruno Luong
Bruno Luong 2019-7-7
If your matrices is 2x2 or 3x3 you can use this FEX for eigen values, then this one for engen vectors.

类别

在 Help Center 和 File Exchange 中查找有关 Operating on Diagonal Matrices 的更多信息

标签

产品


版本

R2019a

Community Treasure Hunt

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

Start Hunting!

Translated by