MatCreateSubMatrixFree

Creates a reduced matrix by masking a full matrix.

Synopsis

#include "petsctao.h" 
PetscErrorCode MatCreateSubMatrixFree(Mat mat, IS Rows, IS Cols, Mat *J)

Collective

Input Parameters

• mat - matrix of arbitrary type

• Rows - the rows that will be in the submatrix

• Cols - the columns that will be in the submatrix

Output Parameter

• J - New matrix

Note

The caller is responsible for destroying the input objects after matrix J has been destroyed.

See Also

MatCreate()

Level

developer

Location

src/tao/matrix/submatfree.c

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