[petsc-users] Factor Matrix

[Joshua Booth]

In reply,

Yes , I meant with MatCopy or MatConvert.

I need the values so I can store them in a larger matrix for latter use.  It
is in process of working on an experimental multilevel method.

Josh


On Wed, Mar 2, 2011 at 7:36 PM, Barry Smith <bsmith at mcs.anl.gov> wrote:

>
> On Mar 2, 2011, at 6:12 PM, Joshua Booth wrote:
>
> > In petsc, I am able to get a cholesky factor matrix from
> MatCholeskyFactor, but I am unable to copy
>
>    Do you mean MatCopy() ?
>
> > or get values from it after.
>
>    What do you want to use the values for? Normally they are only used in
> triangular solvers with MatSolve().
>
>   The data is stored in a matrix specific format. You would have to include
> the private include files and access the data directly if you need it.
> src/mat/impls/sbaij/seq/sbaij.h
>
>
>   Barry
>
> > Why is this?  Is there a work around?
> >
> > Joshua Booth
>
>
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