#include "petscmat.h" PetscErrorCode MatGetValues(Mat mat,PetscInt m,const PetscInt idxm,PetscInt n,const PetscInt idxn,PetscScalar v)Not Collective; currently only returns a local block
|mat||- the matrix|
|v||- a logically two-dimensional array for storing the values|
|m, idxm||- the number of rows and their global indices|
|n, idxn||- the number of columns and their global indices|
MatGetValues() uses 0-based row and column numbers in Fortran as well as in C.
MatGetValues() requires that the matrix has been assembled with MatAssemblyBegin()/MatAssemblyEnd(). Thus, calls to MatSetValues() and MatGetValues() CANNOT be made in succession without intermediate matrix assembly.
Negative row or column indices will be ignored and those locations in v will be left unchanged.
Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages