[vtk-developers] vtkMath::SolveLeastSquares exercised?

Mathieu Malaterre mathieu.malaterre at kitware.com
Thu Feb 26 20:44:13 EST 2004


Chris,

   Can you send this system ? And if possible the solution ?

Thanks
Mathieu

> 
> Does anybody have any code that exercises the method
> vtkMath::SolveLeastSquares added by Tony Pan? I have a system of about
> 32 equations in 12 unknowns, which should, for the most part, be
> independent. But it's not able to construct the pseudo-inverse. I
> already found one bug, a minor memory management bug in which the
> three-parameter InvertMatrix method wasn't allocating dynamic storage
> for index and column when size>10 (I'll be checking in that fix when I
> get past this current problem), so that leads me to believe this code
> isn't being exercised, at least not for larger systems.
> 
>  
> 
> Thanks a bunch in advance...
> 
>  
> 
> Chris
> 
> --
> Christopher R. Volpe, Ph.D.
> 
> Senior Scientist
> Email: cvolpe at ara.com
> Applied Research Associates, Inc.                                Voice:
> 919-582-3380
> 8540 Colonnade Center Dr., Ste 301
> Fax: 919-878-3672
> Raleigh, NC 27615
> Web: www.ara.com <http://www.ara.com/> 
> 
>  
> 
> 
> 
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