CGAL users discussion list

[Pierre Alliez <>]

take a look at eigen.h in CGAL\include\CGAL

it is used by PCA.

Kwok Jasper a e'crit :
> It is a 3 times 3 matrix.
>  
> Thanks
> 
>  > Date: Thu, 9 Oct 2008 15:08:17 +0200
>  > From: 
> 
>  > To: 
> 
>  > Subject: Re: [cgal-discuss] about BasicMatrix class in CGAL
>  >
>  > what's the size of your matrix? is it sparse?
>  >
>  > Kwok Jasper a e'crit :
>  > > Dear Bernd,
>  > >
>  > > Thank you for your reply.
>  > > Actually, I am finding methods for calculating the smallest and second
>  > > smallest eigen-value of a given matrix.
>  > > May I ask is it possible to do that by using CGAL library? or I have
>  > > to find out other library for the calculation ?
>  > >
>  > > Thank you for your kind attention.
>  > >
>  > > Yours faithfully,
>  > > Jasper
>  > >
>  > > > Date: Thu, 9 Oct 2008 10:44:25 +0200
>  > > > From: 
> 
>  > > > To: 
> 
>  > > > S ubject: Re: [cgal-discuss] about BasicMatrix class in CGAL
>  > > >
>  > > > 
> 
>  wrote:
>  > > > > Excuse me, I am trying to see if there is some function 
> provided in
>  > > CGAL
>  > > > > library which can deal with matrix calculation.
>  > > >
>  > > > CGAL is not primarily targeted at linear algebra; for this, there are
>  > > > other libraries (BLAS, boost matrix,...). What are the calculations
>  > > > that you want to do? If you provide some details, we may be able 
> to tell
>  > > > you whether and how they can be done with CGAL.
>  > > >
>  > > > Best,
>  > > > Bernd.
>  > > > --
>  > > > You are currently subscribed to cgal-discuss.
>  > > > To unsubscribe or access the archives, go to
>  > > > https://lists-sop.inria.fr/wws/info/cgal-discuss
>  > >
>  > >
>  > > ----------- 
> -------------------------------------------------------------
>  > > 人與人之間的? Z離只有一指之隔。
>  >
>  >
>  > --
>  > Pierre Alliez
>  > INRIA Sophia Antipolis - Mediterranee
>  > Project-team GEOMETRICA
>  > http://www-sop.inria.fr/members/Pierre.Alliez/
>  > Tel: +33 4 92 38 76 77
>  > Fax: +33 4 97 15 53 95
>  > --
>  > You are currently subscribed to cgal-discuss.
>  > To unsubscribe or access the archives, go to
>  > https://lists-sop.inria.fr/wws/info/cgal-discuss
> 
> 
> ------------------------------------------------------------------------
> 給我一個身份 We need a name! <http://hk.msn.com/name>


-- 
Pierre Alliez
INRIA Sophia Antipolis - Mediterranee
Project-team GEOMETRICA
http://www-sop.inria.fr/members/Pierre.Alliez/
Tel: +33 4 92 38 76 77
Fax: +33 4 97 15 53 95