[petsc-users] How to get the eigenvectors in Slepc

[Matthew Knepley]

On Sat, Apr 13, 2013 at 11:34 AM, Sonya Blade <sonyablade2010 at hotmail.com>wrote:

> Thank you Hong,
>
> I already looked at those examples after not achieving the successful
> results I decide to share it. It seems that I don't know how to read
> values from the vectors, EPSGetEigenvector(eps,1,vec,PETSC_NULL); retrieves
> no errors which I assume that it returns the eigenvectors to corresponding
> eigenvalue(which is second in my case).
>
> I use following notation to read values from vectors,  here I'm not sure
> whether the "&vec[i] or vec[i]"  can be used to read the values from
> vector.
>
> Vec vec;
>
> for (i=0;i<9;i++)
>   {
>     PetscPrintf(MPI_COMM_WORLD," %3.8f: ",&vec[i] );
>   }
>

Read the Manual chapter on Vectors.

   Matt


> Regards,




-- 
What most experimenters take for granted before they begin their
experiments is infinitely more interesting than any results to which their
experiments lead.
-- Norbert Wiener
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