The Math Forum

Search All of the Math Forum:

Views expressed in these public forums are not endorsed by NCTM or The Math Forum.

Math Forum » Discussions » Software » comp.soft-sys.matlab

Notice: We are no longer accepting new posts, but the forums will continue to be readable.

Topic: Questions about "eigs"?
Replies: 1   Last Post: Sep 24, 2013 11:20 AM

Advanced Search

Back to Topic List Back to Topic List Jump to Tree View Jump to Tree View   Messages: [ Previous | Next ]

Posts: 1
Registered: 9/24/13
Questions about "eigs"?
Posted: Sep 24, 2013 9:30 AM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply


I am writing to you regarding two questions which arose when we were using Matlab's "eigs" function.

Question 1: How can it be achieved that "eigs" returns unnormalized vektors? It normalize the vectors, at least when all eigenvalues are computed.

Question 2: It seems that if "eigs" returns the k largest eigenvalues and the corresponding vectors; and if we vary k: the sign of the eigenvectors sometimes changes in dependency of k. Why is that the case?

Thank you for your help!

Point your RSS reader here for a feed of the latest messages in this topic.

[Privacy Policy] [Terms of Use]

© The Math Forum at NCTM 1994-2018. All Rights Reserved.