PetscSectionCreateSubdomainSection#
Create a new, smaller section with support on a subdomain of the mesh
Synopsis#
#include "petscsection.h"
PetscErrorCode PetscSectionCreateSubdomainSection(PetscSection s, IS subpointMap, PetscSection *subs)
Collective
Input Parameters#
s - the
PetscSectionsubpointMap - a sorted list of points in the original mesh which are in the subdomain
Output Parameter#
subs - the subsection
Notes#
The point numbers remain the same as in the larger PetscSection, but the section offsets now refer to a new, smaller vector. The chart of subs
is [min(subpointMap),max(subpointMap)+1)
Compare this with PetscSectionCreateSubmeshSection() that maps the point numbers to start at zero
Developer Notes#
The use of the term Subdomain is unneeded and needs clarification, it is not specific to meshes. It appears to be just a subset of the chart of the original PetscSection
See Also#
PetscSection, PetscSection, PetscSectionCreateSubmeshSection(), PetscSectionCreateSubsection(), DMPlexGetSubpointMap(), PetscSectionCreate()
Level#
advanced
Location#
src/vec/is/section/interface/section.c
Index of all PetscSection routines
Table of Contents for all manual pages
Index of all manual pages