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how to get the eigen values using fortran

matthewkmk
Beginner
‎01-08-2003 08:51 AM
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if i have a matrix, i need to calculate the eigen , how to perform it using fortran ,thx
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david_jones
Beginner
‎01-08-2003 10:32 AM
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Subroutines are available in various libraries. Recent CVF comes with the CXML library which does contain routines for eigenvalues.

The online help says ...
"For information about the CXML routines (after installation), use Acrobat Reader to open the file cxmlref.pdf in:
Program FilesMicrosoft Visual StudioDf98CxmlDoc"

Another possibility is the IMSL library which comes with CVF Professional version.

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Jugoslav_Dujic
Valued Contributor II
‎01-08-2003 02:10 PM
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...or visit (and bookmark) www.netlib.org. IIRC ARPACK is one of packages containing calculation of eigenvalues.

Jugoslav
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matthewkmk
Beginner
‎01-09-2003 12:36 PM
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thx very much.
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matthewkmk
Beginner
‎01-09-2003 12:37 PM
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thx very much also.
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