Block-diagonalization of a matrix

Hello everyone,

It is possible to block-diagonalize a matrix in Matlab?

I have a matrix composed of 1x1, 2x2 and 3x3 blocks and I would like to obtain the eigenvalues and eigenvectors sorted according to the block they correspond to.

When I use the eig command, i obtain the eigenvalues sorted in ascending order.

Thanks is advance.

[Rik]

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Answer 1

[Christine Tobler]

There is no direct function to do this. The best is probably to write a function that does a loop through the different blocks and calls eig on each block separately.