petsc-3.11.4 2019-09-28
PetscSection
Mapping from integers in a designated range to contiguous sets of integers.
Synopsis
typedef struct _p_PetscSection *PetscSection;
In contrast to IS, which maps from integers to single integers, the range of a PetscSection is in the space of
contiguous sets of integers. These ranges are frequently interpreted as domains of other array-like objects,
especially other PetscSections, Vecs, and ISs. The domain is set with PetscSectionSetChart() and does not need to
start at 0. For each point in the domain of a PetscSection, the output set is represented through an offset and a
count, which are set using PetscSectionSetOffset() and PetscSectionSetDof() respectively. Lookup is typically using
accessors or routines like VecGetValuesSection().
See Also
PetscSectionCreate(), PetscSectionDestroy()
Level
developer
Location
src/vec/is/is/../../../../include/petscistypes.h
Examples
src/dm/impls/stag/examples/tutorials/ex1.c.html
src/ts/examples/tutorials/ex11.c.html
Implementations
_p_PetscSection in include/petsc/private/isimpl.h
Index of all IS routines
Table of Contents for all manual pages
Index of all manual pages