MatSetValuesRowLocal — PETSc 3.21.4 documentation

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# 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 logically two-dimensional array of values

## 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

## 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
Table of Contents for all manual pages
Index of all manual pages