PETSc version 3.17.0
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# PetscSectionSetClosureIndex

Set a cache of points in the closure of each point in the section

### Synopsis

    #include "petscsection.h"
    PetscErrorCode PetscSectionSetClosureIndex(PetscSection section, PetscObject obj, PetscSection clSection, IS clPoints)

Collective

### Input Parameters

| section | - The PetscSection
| obj | - A PetscObject which serves as the key for this index
| clSection | - Section giving the size of the closure of each point
| clPoints | - IS giving the points in each closure

Note: We compress out closure points with no dofs in this section

### See Also

PetscSectionGetClosureIndex(), DMPlexCreateClosureIndex()

### Level

advanced

### Location

src/vec/is/section/interface/section.c
Index of all PetscSection routines
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Index of all manual pages