RE: [eigen] SVD with singular matrices

[<hamelin.philippe@xxxxxxx>]

After some more investigation, I found that the problem is effectively the SVD. It fails with the singular matrix :

 

[1 1; 0 0]

 

while it works fine with JacobiSVD. Is that something to do with the implemented method or this is really a bug?

 

Thank you,

 

Philippe

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De : Listengine [mailto:listengine@xxxxxxxxxxxxxxxxx] De la part de hamelin.philippe@xxxxxxx
Envoyé : 29 septembre 2010 10:27
À : eigen@xxxxxxxxxxxxxxxxxxx
Objet : [eigen] SVD with singular matrices

Hello,

 

when updating from eigen2 to eigen3, I found that my pseudo-inverse was not working correctly for singular matrices. However, just replacing SVD with JacobiSVD makes it work. Before looking further, is there any limitation with SVD with singular matrices such as:

 

[1 1;0 0]

 

Thank you,

 

------------------------------------
Philippe Hamelin, ing. jr, M. Ing
Chercheur / Researcher

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