PETSc version 3.15.5
MatCreateSubMatrixFree
Creates a reduced matrix by masking a full matrix. 
Synopsis
#include "petsctao.h" 
#include "submatfree.h" 
PetscErrorCode MatCreateSubMatrixFree(Mat mat,IS Rows, IS Cols, Mat *J)
Collective on matrix
Input Parameters
|  | mat | - matrix of arbitrary type | 
|  | Rows | - the rows that will be in the submatrix | 
|  | Cols | - the columns that will be in the submatrix | 
Output Parameters
Notes
The caller is responsible for destroying the input objects after matrix J has been destroyed.
See Also
 MatCreate()
Level
developer
Location
src/tao/matrix/submatfree.c
Index of all Tao routines
Table of Contents for all manual pages
Index of all manual pages