MatZeroRowsIS#
Zeros all entries (except possibly the main diagonal) of a set of rows of a matrix indicated by an IS
Synopsis#
#include "petscmat.h" 
PetscErrorCode MatZeroRowsIS(Mat mat, IS is, PetscScalar diag, Vec x, Vec b)
Collective
Input Parameters#
- mat - the matrix 
- is - index set, - IS, of rows to remove (if- NULLthen no row is removed)
- diag - value put in all diagonals of eliminated rows 
- x - optional vector of solutions for zeroed rows (other entries in vector are not used) 
- b - optional vector of right-hand side, that will be adjusted by provided solution 
Note#
See MatZeroRows() for details on how this routine operates.
See Also#
Matrices, Mat, MatZeroRows(), MatZeroRowsColumns(), MatZeroRowsLocalIS(), MatZeroRowsStencil(), MatZeroEntries(), MatZeroRowsLocal(), MatSetOption(),
MatZeroRowsColumnsLocal(), MatZeroRowsColumnsLocalIS(), MatZeroRowsColumnsIS(), MatZeroRowsColumnsStencil(), IS
Level#
intermediate
Location#
Examples#
Index of all Mat routines
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Index of all manual pages