PETSc version 3.17.4
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# DMPlexLocalVectorLoad

Loads on-disk vector data into a local vector

### Synopsis

    #include "petscdmplex.h"
    PetscErrorCode DMPlexLocalVectorLoad(DM dm, PetscViewer viewer, DM sectiondm, PetscSF sf, Vec vec)

Collective on DM

### Input Parameters

| dm | - The DM that represents the topology
| viewer | - The PetscViewer that represents the on-disk vector data
| sectiondm | - The DM that contains the local section on which vec is defined
| sf | - The SF that migrates the on-disk vector data into vec
| vec | - The local vector to set values of

### Notes

In general dm and sectiondm are two different objects, the former carrying the topology and the latter carrying the section, and have been given a topology name and a section name, respectively, with PetscObjectSetName(). In practice, however, they can be the same object if it carries both topology and section; in that case the name of the object is used as both the topology name and the section name.

Typical calling sequence

          DMCreate(PETSC_COMM_WORLD, &dm);

          DMSetType(dm, DMPLEX);

          PetscObjectSetName((PetscObject)dm, "topologydm_name");

          DMPlexTopologyLoad(dm, viewer, &sfX);

          DMClone(dm, &sectiondm);

          PetscObjectSetName((PetscObject)sectiondm, "sectiondm_name");

          DMPlexSectionLoad(dm, viewer, sectiondm, sfX, NULL, &lsf);

          DMGetLocalVector(sectiondm, &vec);

          PetscObjectSetName((PetscObject)vec, "vec_name");

          DMPlexLocalVectorLoad(dm, viewer, sectiondm, lsf, vec);

          DMRestoreLocalVector(sectiondm, &vec);

          PetscSFDestroy(&lsf);

          PetscSFDestroy(&sfX);

          DMDestroy(&sectiondm);

          DMDestroy(&dm);

### See Also

DMPlexTopologyLoad(), DMPlexSectionLoad(), DMPlexGlobalVectorLoad(), DMPlexGlobalVectorView(), DMPlexLocalVectorView()

### Level

advanced

### Location

src/dm/impls/plex/plex.c
Index of all DMPLEX routines
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Index of all manual pages