Eigenvalues/vectors code in Pascal needed

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3 total messages Started by George Georgiou Thu, 27 Sep 1990 08:08

#567

Author: George Georgiou
Date: Thu, 27 Sep 1990 08:08

14 lines
1002 bytes

I am in terrible need of Pascal code that finds the
eigenvalues and eigenvectors of a general real matrix.
If someone out there has such a code, would you please let me know?

I got the rg routine from statlib@temper.stat.cmu.edu, but
unfortunately for me the code is in FORTRAN.

Thanks in advance,


George Georgiou                       georgiou@rex.cs.tulane.edu
Computer Science Department           +---------------------------+
Tulane University                     |       Fiat Lux            |
New Orleans, LA 70118                 +---------------------------+

Re: Eigenvalues/vectors code in Pascal needed

#568

Author: Timo Salmi
Date: Thu, 27 Sep 1990 17:41

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In article <4298@rex.cs.tulane.edu> georgiou@rex.cs.tulane.edu (George Georgiou) writes:
>I am in terrible need of Pascal code that finds the
>eigenvalues and eigenvectors of a general real matrix.
>If someone out there has such a code, would you please let me know?

A trivial suggestion.  Have you looked at Borland's Turbo Pascal
Numerical Toolbox. 

...................................................................
Prof. Timo Salmi        (Moderating at anon. ftp site 128.214.12.3)
School of Business Studies, University of Vaasa, SF-65101, Finland
Internet: ts@chyde.uwasa.fi Funet: gado::salmi Bitnet: salmi@finfun

Re: Eigenvalues/vectors code in Pascal needed

#569

Author: Michael Katzmann
Date: Fri, 28 Sep 1990 17:05

30 lines
1900 bytes

In article <4298@rex.cs.tulane.edu> georgiou@rex.cs.tulane.edu (George Georgiou) writes:
   >I am in terrible need of Pascal code that finds the
   >eigenvalues and eigenvectors of a general real matrix.
   >If someone out there has such a code, would you please let me know?
   >
Try "Numerical Recipes in Pascal" by Cambridge University Press.
( 40 West 20th st. NY ). (Probably available at your local good bookstore
but the publishers have the routine on disk.)

I use the "C" version and it is extremely good. A few little bugs
like the way they sometimes address arrays (nothing I have found
that would cause the programme to crash though). It has a suite
of programmes for eigensystems. The methods are very well thought out
and go far beyond the ususal simple approaches, so that the performance is
optimum.

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