eigenvalues - determining the three major eigenvalues from a matrix

1 view (last 30 days)
Is there a code or program I can download which will determine the three main eigenvalues,; t1 t2 and t3 of a matrix as I really am not sure how to go about this?

Accepted Answer

Muthu Annamalai
Muthu Annamalai on 10 Jul 2013
Take a look at the >> doc eigs >> doc eig as @Jan Simon has suggested.
For example with eigs
So if A is your matrix and you want the first 3 eigenvalue-vector pairs, you just use,
>> [v,d] = eigs(A,3)
>> d = diag(d)
should solve your problem explicitly

More Answers (2)

Jan on 10 Jul 2013
Is your matrix large and sparse, then use eigs. Otherwise eig is sufficient. Both are builtin functions.

Bran on 10 Jul 2013
Well I actually would like to work out the principal Eigen vector for a ODF which is in the form of a vector but I'm not really sure how to go about that. would something like princomp be suitable?


Find more on Linear Algebra in Help Center and File Exchange

Community Treasure Hunt

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

Start Hunting!