[petsc-users] Import Matlab matrix

[Barry Smith]

  If you already have Matlab matrices that were saved with, for example,

save example.mat A

It may be possible to use MatLoad() directly on them using the PETSCVIEWERHDF5 viewer type (and not need to use the PetscBinaryWrite()). Please read the full manual page https://petsc.org/release/docs/manualpages/Mat/MatLoad.html <https://petsc.org/release/docs/manualpages/Mat/MatLoad.html> for details and caveats.

 

> On Jul 29, 2022, at 12:00 PM, Jed Brown <jed at jedbrown.org> wrote:
> 
> You can use share/petsc/matlab/PetscBinaryWrite.m.
> 
> matlab> PetscBinaryWrite('matrix.petsc', sparse(A))
> 
> Then load it with MatLoad in PETSc.
> 
> Ahmed Mansur <ahmedlp9 at gmail.com> writes:
> 
>> How to import a sparse matrix from Matlab using C++ and PETSC , if anyone
>> has any example code, thanks

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