petsc-3.9.4 2018-09-11
MatCreateSubMatrixVirtual
Creates a virtual matrix that acts as a submatrix
Synopsis
#include "petscmat.h"
PetscErrorCode MatCreateSubMatrixVirtual(Mat A,IS isrow,IS iscol,Mat *newmat)
Collective on Mat
Input Parameters
| A | - matrix that we will extract a submatrix of
|
| isrow | - rows to be present in the submatrix
|
| iscol | - columns to be present in the submatrix
|
Output Parameters
newmat -new matrix
Notes
Most will use MatCreateSubMatrix which provides a more efficient representation if it is available.
See Also
MatCreateSubMatrix(), MatSubMatrixVirtualUpdate()
Level
developer
Location
src/mat/impls/submat/submat.c
Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages