yade-dev team mailing list archive

[boon chiaweng <booncw@xxxxxxxxxxx>]

Thanks Anton for the emails.  I am looking also for eigen"vectors".  What functions are you using to retrieve them?

Boon

From: gladky.anton@xxxxxxxxx
Date: Fri, 26 Feb 2010 16:02:09 +0100
To: yade-dev@xxxxxxxxxxxxxxxxxxx
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 <booncw@xxxxxxxxxxx>







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: gladky.anton@xxxxxxxxx


Date: Fri, 26 Feb 2010 15:09:01 +0100
To: yade-dev@xxxxxxxxxxxxxxxxxxx
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 <booncw@xxxxxxxxxxx>







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
 		 	   		  
Hotmail: Free, trusted and rich email service. Get it now.





_______________________________________________

Mailing list: https://launchpad.net/~yade-dev

Post to     : yade-dev@xxxxxxxxxxxxxxxxxxx

Unsubscribe : https://launchpad.net/~yade-dev

More help   : https://help.launchpad.net/ListHelp



 		 	   		  
Your E-mail and More On-the-Go. Get Windows Live Hotmail Free. Sign up now.



_______________________________________________

Mailing list: https://launchpad.net/~yade-dev

Post to     : yade-dev@xxxxxxxxxxxxxxxxxxx

Unsubscribe : https://launchpad.net/~yade-dev

More help   : https://help.launchpad.net/ListHelp



 		 	   		  
_________________________________________________________________
Your E-mail and More On-the-Go. Get Windows Live Hotmail Free.
https://signup.live.com/signup.aspx?id=60969