petsc-3.5.2 2014-09-08
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PetscSectionCreate

Allocates PetscSection space and sets the map contents to the default.

Synopsis

#include "petscvec.h"   
PetscErrorCode PetscSectionCreate(MPI_Comm comm, PetscSection *s)
Collective on MPI_Comm

Input Parameters

comm - the MPI communicator
s - pointer to the section

Notes: Typical calling sequence

      PetscSectionCreate(MPI_Comm,PetscSection *);
      PetscSectionSetNumFields(PetscSection, numFields);
      PetscSectionSetChart(PetscSection,low,high);
      PetscSectionSetDof(PetscSection,point,numdof);
      PetscSectionSetUp(PetscSection);
      PetscSectionGetOffset(PetscSection,point,PetscInt *);
      PetscSectionDestroy(PetscSection);

The PetscSection object and methods are intended to be used in the PETSc Vec and Mat implementions; it is recommended they not be used in user codes unless you really gain something in their use.

See Also

PetscSection, PetscSectionDestroy()

Level:developer
Location:
src/vec/is/utils/vsectionis.c
Index of all IS routines
Table of Contents for all manual pages
Index of all manual pages

Examples

src/ts/examples/tutorials/ex11.c.html