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petsc to matlab

How can I save the matrix in PETSc and load it in matlab?

I tried this but it does not work:


  PetscViewer view;

  PetscViewerCreate (PETSC_COMM_WORLD, &view);

  PetscViewerSetFormat (view, PETSC_VIEWER_ASCII_MATLAB);

  PetscViewerAsciiOpen(PETSC_COMM_WORLD, "matrix.mat", &view);
  
  MatView(A, view);

  PetscViewerDestroy(view);



Billy.