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Topic: Question: EigenValues/Vectors for large matrices
Replies: 2   Last Post: Jun 18, 1996 8:44 AM

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Halldor Bjornsson

Posts: 2
Registered: 12/11/04
Question: EigenValues/Vectors for large matrices
Posted: Jun 17, 1996 12:22 PM
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Hi,
I have to find eigenvalues and eigenvectors of a matrix whose
size can become quite large (using "EIG" is not an option).
The matrix is tridiagonal, and I only need a few eigenvalues and
eigenvectors. I know this can be done using the EISPACK routines, "jtridib"
(that finds eigenvalues) and "jtinivit" (that finds the eigenvectors),
but to my surprise Matlab does not have a built in routine for this.

Does anyone know how to do this using matlab?

Sincerely,
Halldor
--
*********************************************************
* Halldor Bjornsson *
* Centre for Climate and Global Change Research and *
* Department of Atmospheric and Oceanic Sciences *
* McGill University, 805 Sherbrooke Street West *
* Montreal, Quebec H3A 2K6 Canada *
* Phone: (514) 398-7448 *
* Fax: (514) 398-1381 *
* Email: halldor@atlantic.meteo.mcgill.ca *
* WWW: http://www.meteo.mcgill.ca/people/HBJ.html *
*********************************************************





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