PETSc version 3.15.5
DMSetAdjacency
Set the flags for determining variable influence 
Synopsis
#include "petscdm.h"          
#include "petscdmlabel.h"     
#include "petscds.h"     
PetscErrorCode DMSetAdjacency(DM dm, PetscInt f, PetscBool useCone, PetscBool useClosure)
Not collective
Input Parameters
|  | dm | - The DM object | 
|  | f | - The field number | 
|  | useCone | - Flag for variable influence starting with the cone operation | 
|  | useClosure | - Flag for variable influence using transitive closure | 
Notes
    FEM:   Two points p and q are adjacent if q \in closure(star(p)),   useCone = PETSC_FALSE, useClosure = PETSC_TRUE
    FVM:   Two points p and q are adjacent if q \in support(p+cone(p)), useCone = PETSC_TRUE,  useClosure = PETSC_FALSE
    FVM++: Two points p and q are adjacent if q \in star(closure(p)),   useCone = PETSC_TRUE,  useClosure = PETSC_TRUE
Further explanation can be found in the User's Manual Section on the Influence of Variables on One Another.
See Also
 DMGetAdjacency(), DMGetField(), DMSetField()
Level
developer
Location
src/dm/interface/dm.c
Index of all DM routines
Table of Contents for all manual pages
Index of all manual pages