Thanks Anton! Now it works. I noted that there are two classes with the
eigenvalue() function. One by Matrixbase, and one by EigenSolver. The one
which you have implemented (inherited from EigenSolver) seems to more stable
than the one which is inherited Matrix base. I had some errors using the
latter.
Cheers,
Boon
From: [email protected]
Date: Fri, 26 Feb 2010 18:04:51 +0100
To: [email protected]
Subject: Re: [Yade-dev] Eigen decomposition
Please, check here
http://bazaar.launchpad.net/%7Eyade-dev/yade/wm3-eigen/annotate/head%3A/eigen/yadeMath.hpp#L204
this is the "glue" between Eigen and WM3. Hope it
helps.______________________________
Anton Gladkyy
2010/2/26 boon chiaweng <[email protected]>
Thanks Anton for the emails. I am looking also for eigen"vectors". What
functions are you using to retrieve them?
Boon
From: [email protected]
Date: Fri, 26 Feb 2010 16:02:09 +0100
To: [email protected]
Subject: Re: [Yade-dev] Eigen decomposition
I am not very familiar with this function,
but
A.eigenvalues().real()
should help you.______________________________
Anton Gladkyy
2010/2/26 boon chiaweng <[email protected]>
Thanks Anton,
what function in Eigen, that you're using to get the eigenvector? Matrix3d
Eigenvectors = A.eigenvectors() doesn't work (A is a 3x3 matrx)...
Yours,
Boon
From: [email protected]
Date: Fri, 26 Feb 2010 15:09:01 +0100
To: [email protected]
Subject: Re: [Yade-dev] Eigen decomposition
That's true. That is one of reasons, why we move to Eigen library.
Just wait a little bit, we have almost finished. (Or I am too optimistic ;)
)______________________________
Anton Gladkyy
2010/2/26 boon chiaweng <[email protected]>
Hi,
Wm3 was not able to carry out eigendecomposition correctly on my matrix, and
gave "NaN". Eigen tuxfamily, on the other hand, does not have spectral/eigen
decomposition. Does anyone know what's wrong with the eigendecomposition in
Wm3?
Yours,
Boon
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