MatSetValuesRowLocal#

Inserts a row (block row for MATBAIJ matrices) of nonzero values into a matrix

Synopsis#

#include "petscmat.h" 
PetscErrorCode MatSetValuesRowLocal(Mat mat, PetscInt row, const PetscScalar v[])

Not Collective

Input Parameters#

  • mat - the matrix

  • row - the (block) row to set

  • v - a one-dimensional array that contains the values. For MATBAIJ they are implicitly stored as a two-dimensional array, by default in row-major order. See MAT_ROW_ORIENTED in MatSetOption() for how to use column-major order.

Notes#

The values, v, are column-oriented (for the block version) and sorted

All the nonzero values in row must be provided

The matrix must have previously had its column indices set, likely by having been assembled.

row must belong to this MPI process

Fortran Note#

If v is a two-dimensional array use reshape() to pass it as a one dimensional array

See Also#

Matrices, Mat, MatSetOption(), MatAssemblyBegin(), MatAssemblyEnd(), MatSetValuesBlocked(), MatSetValuesLocal(), InsertMode, INSERT_VALUES, ADD_VALUES, MatSetValues(), MatSetValuesRow(), MatSetLocalToGlobalMapping()

Level#

intermediate

Location#

src/mat/interface/matrix.c


Index of all Mat routines
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Index of all manual pages