Re: [Help-gsl] Only the largest/smallest eigenvalues and corresponding vectors

[Cristobal Navarro]

i just been working with eigenvalues.

even when there is not a feature like that, i computed the eigenvalues and
did a one-time scan and took the largest real one for each matrix. The cost
for the cpu is low, o(n). i had to to it for 1000 diferent matrices  and it
was very fast.



Cristobal <http://www.youtube.com/neoideo>


On Thu, Jul 15, 2010 at 2:09 AM, Inigo Aldazabal Mensa <
address@hidden> wrote:

> El Miércoles, 14 de Julio de 2010, Ørjan Bergmann escribió:
> >
> > Is it possible to calculate only the (say the 5) largest eigenvalues and
> > corresponding eigenvectors in a manner similar to e.g. "eigs" (rather
> > than "eig") in Matlab?
> >
>
> Last time I checked you could not do it in GSL and went with lapack for the
> job.
>
>
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