eigs in MATLAB

[searcher2010]

hello

I need to know the numerical method used by the command eigs in MATLAB which is used to get eigenfrequencies and eigevectors of matrices.
any help will be great!!
thanks

 

[GregLocock]

EISPACK

Cheers

Greg Locock


New here? Try reading these, they might help FAQ731-376

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[searcher2010]

thanks alot Locock
but,do you know if the command eigs which is calculate only some of the eigenvalues and eigenvectors using the QR algorthim, Bisection method or the Invese iteration method?
my matrices are symmetric and complex, and according to the EISPACK algorithm for complex matrix the QR is used but QR calculate the whole eigenvalues and eigenvectors!!

waiting your reply please

cheers

 

[GregLocock]

I haven't the faintest idea

Cheers

Greg Locock


New here? Try reading these, they might help FAQ731-376

http://eng-tips.com/market.cfm?

 

[GregLocock]

Of course you could always download the source code and find out for yourself.

Cheers

Greg Locock


New here? Try reading these, they might help FAQ731-376

http://eng-tips.com/market.cfm?