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Re: diagonal dominant [message #82948]

Wed, 30 January 2013 08:05

lecacheux.alain
Messages: 325
Registered: January 2008

Senior Member

Le mercredi 30 janvier 2013 15:26:11 UTC+1, Gompie a écrit :
> Hi,
>
> I have a matrix( 256,256) and I want to convert it into diagonal dominant form.
>
> What is the best way to do it. Does IDL have function to do it?
>
> Gompie

I do not well understand your question. A matrix is diagonal dominant or it is not: you cannot change that by any converting method. Now, if you want to find a space in which your matrix is diagonal, your problem is solved by eigenvalue decomposition. In IDL, you can use EIGENQL and EIGENVEC functions or equivalently their Lapack counterparts: LA_EIGENQL, LA_EIGENVEC and LA_EIGENPROBLEM.
Hoping to have answered.
alain.

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		Re: diagonal dominant By: lecacheux.alain on Wed, 30 January 2013 08:05
		Re: diagonal dominant By: Gompie on Wed, 30 January 2013 08:23

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