Fortran equivalent to Matlab s eig function
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Re: Fortran equivalent to Matlab's eig() function     

Group: comp.lang.fortran · Group Profile · Search for Fortran equivalent to Matlab s eig function in comp.lang.fortran
Author: Gordon Sande
Date: Sep 9, 2008 13:26

... by DGGHRD. I doubt that matlab has a function designed for Karl Hessenberg'...numerical analysis issue rather than a Fortran question. I'm missing the meaning...to take a small bet that MatLab is likely have packaged the pair...taking more trouble if even possible. Matlab being an educational tool and ...and eigenvectors. The guy who did Matlab was a professor of Computer ...
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Re: Fortran equivalent to Matlab's eig() function     

Group: comp.lang.fortran · Group Profile · Search for Fortran equivalent to Matlab s eig function in comp.lang.fortran
Author: Ron Ford
Date: Sep 9, 2008 12:16

...*T*Z1**T, * * as computed by DGGHRD. I doubt that matlab has a function designed for Karl Hessenberg's ... a numerical analysis issue rather than a Fortran question. I'm missing the meaning of...willing to take a small bet that MatLab is likely have packaged the pair for...> taking more trouble if even possible. Matlab being an educational tool and Hessenberg form...
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Re: Fortran equivalent to Matlab's eig() function     

Group: comp.lang.fortran · Group Profile · Search for Fortran equivalent to Matlab s eig function in comp.lang.fortran
Author: Gordon Sande
Date: Sep 9, 2008 05:58

...T, B = Q1*T*Z1**T, * * as computed by DGGHRD. I doubt that matlab has a function designed for Karl Hessenberg's stuff. Not knowing better, it looks like it .... This is really a numerical analysis issue rather than a Fortran question. Sight unseen I would be willing to take a small bet that MatLab is likely have packaged the pair for ready use with access...
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Re: Fortran equivalent to Matlab's eig() function     

Group: comp.lang.fortran · Group Profile · Search for Fortran equivalent to Matlab s eig function in comp.lang.fortran
Author: paya
Date: Sep 9, 2008 03:12

...the solution time in comparison with MATLAB. On 8 Zář, 17:12, ...I'm trying to convert some Matlab code into Fortran 77, as Matlab takes days to solve the multiple finite difference ... to solve for. All the Matlab code transfers relatively easily into ... for the main solution function (which Matlab makes super easy). I'm... the following line: [V,D]=eig(A,B,'qz') Where Does ...
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Re: Fortran equivalent to Matlab's eig() function     

Group: comp.lang.fortran · Group Profile · Search for Fortran equivalent to Matlab s eig function in comp.lang.fortran
Author: Ron Ford
Date: Sep 8, 2008 21:02

...trying to substitute for the following line: [V,D]=eig(A,B,'qz') Where Does anyone have any suggestions...(stylistic) mess...idea for a new TV show: Fortran Makeover, Bedrock Edition I never have 2 matrices lying...= Q1*T*Z1**T, * * as computed by DGGHRD. I doubt that matlab has a function designed for Karl Hessenberg's stuff. Not knowing better, it looks ...
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Fortran equivalent to Matlab's eig() function     

Group: comp.lang.fortran · Group Profile · Search for Fortran equivalent to Matlab s eig function in comp.lang.fortran
Author: Dave
Date: Sep 8, 2008 08:12

I'm trying to convert some Matlab code into Fortran 77, as Matlab takes days to solve the multiple finite difference systems I need to solve for. All the Matlab code transfers relatively easily into F77, except for the main solution function (which Matlab makes super easy). I'm not sure... substitute for the following line: [V,D]=eig(A,B,'qz') Where Does anyone have ...
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Re: Fortran equivalent to Matlab's eig() function     

Group: comp.lang.fortran · Group Profile · Search for Fortran equivalent to Matlab s eig function in comp.lang.fortran
Author: Ron Ford
Date: Sep 10, 2008 17:49

... at UNM since TMW (The Mathworks, the company that produces Matlab) was founded in 1984. The story from Cleve's pen is... to the engineering library, where a person could thumb through fortran-related materials. They had a manual for Lapack and Eispack,..., where they had monographs posted of cosmological computations with fortran. I was impressed with how much the pictures of graduate ...
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Re: Fortran equivalent to Matlab's eig() function     

Group: comp.lang.fortran · Group Profile · Search for Fortran equivalent to Matlab s eig function in comp.lang.fortran
Author: dpb
Date: Sep 9, 2008 18:42

... have gotten the strange idea that Matlab was solely, or even primarily an ... with different input data) rewriting in Fortran would be more usual. Depends on ... a number of production applications in Matlab although generally they're tied around...graphics or other specialized abilities of Matlab. A "traditional" number-cruncher only, ...mex-files in C/C++ or Fortran to do the really heavy ...
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Re: Fortran equivalent to Matlab's eig() function     

Group: comp.lang.fortran · Group Profile · Search for Fortran equivalent to Matlab s eig function in comp.lang.fortran
Author: Gary Scott
Date: Sep 9, 2008 18:28

... would Ron have gotten the strange idea that Matlab was solely, or even primarily an educational ... over with different input data) rewriting in Fortran would be more usual. Research may or ... Gary Scott mailto:garylscott@sbcglobal dot net Fortran Library: http://www.fortranlib.com Support the ... GNU GFortran Project: http://gcc.gnu.org/fortran/index.html If you want to do ...
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Re: Fortran equivalent to Matlab's eig() function     

Group: comp.lang.fortran · Group Profile · Search for Fortran equivalent to Matlab s eig function in comp.lang.fortran
Author: glen herrmannsfeldt
Date: Sep 9, 2008 18:22

Richard Maine wrote: And where would Ron have gotten the strange idea that Matlab was solely, or even primarily an educational product? Wow is that far from the mark - very far - pretty much in the .... (Both have the goal of learning.) For production work (solving the same equations over and over with different input data) rewriting in Fortran would be more usual. -- glen
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