Sort eigenvectors of a list of matrices

Question

I have a list of matrices and want to obtain a list of eigenvectors and eigenvalues for each matrix, both sorted by the size of the eigenvalue. If I write system={eigenvalues, eigenvectors}, where eigenvalues is a list of lists of eigenvalues for each of the matrices, I would like to sort the eigenvectors by writing

Map[Sort[#, #1[[1]] < #2[[1]]] &, Transpose[system]] 

of some sort, but this does nothing useful.

Answer 1

Ordering[Norm /@ Last @ N[Eigensystem[system]]];

gives you the ordering by norm. You can apply this on your eigenvalues and eigenvectors, e.g.

Eigenvectors[system][[%]]

EDIT

To apply this on a list of matrices:

(# &@Ordering[Norm /@ N[#]]) & /@ Eigenvectors[#] & /@ {mat1,mat2,...,matn}