PetscSectionCreateSubmeshSection#
Create a new, smaller section with support on the submesh
Synopsis#
#include "petscsection.h"
PetscErrorCode PetscSectionCreateSubmeshSection(PetscSection s, IS subpointIS, PetscSection *subs)
Collective
Input Parameters#
s - the
PetscSectionsubpointIS - a sorted list of points in the original mesh which are in the submesh
Output Parameter#
subs - the subsection
Notes#
The points are renumbered from 0, and the section offsets now refer to a new, smaller vector. That is the chart of subs is [0,sizeof(subpointmap))
Compare this with PetscSectionCreateSubdomainSection() that does not map the points numbers to start at zero but leaves them as before
Developer Notes#
The use of the term Submesh is confusing 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, PetscSectionCreateSubdomainSection(), 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