petsc-3.8.4 2018-03-24
MatPermute
Creates a new matrix with rows and columns permuted from the original.
Synopsis
#include "petscmat.h"
PetscErrorCode MatPermute(Mat mat,IS row,IS col,Mat *B)
Collective on Mat
Input Parameters
| mat | - the matrix to permute
|
| row | - row permutation, each processor supplies only the permutation for its rows
|
| col | - column permutation, each processor supplies only the permutation for its columns
|
Output Parameters
B -the permuted matrix
Note
The index sets map from row/col of permuted matrix to row/col of original matrix.
The index sets should be on the same communicator as Mat and have the same local sizes.
See Also
MatGetOrdering(), ISAllGather()
Level:advanced
Location:src/mat/interface/matrix.c
Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages
Examples
src/ksp/ksp/examples/tutorials/ex18.c.html