Opm::Elasticity::MatrixOps Class Reference

Helper class with some matrix operations. More...

#include <matrixops.hpp>

Static Public Member Functions
static void	fromAdjacency (Matrix &A, const AdjacencyPattern &adj, int rows, int cols)
	Create a sparse matrix from a given adjacency pattern.
static Matrix	fromDense (const Dune::DynamicMatrix< double > &T)
	Create a sparse matrix from a dense matrix.
static void	print (const Matrix &A)
	Print a matrix to stdout.
static Matrix	Axpy (const Matrix &A, const Matrix &B, double alpha)
	axpy like operation - returns A+alpha*B
static Matrix	augment (const Matrix &A, const Matrix &B, size_t r0, size_t c0, bool symmetric)
	Augment a matrix with another.
static Matrix	extractDiagonal (const Matrix &A)
	Extract the diagonal of a matrix into a new matrix.
static Matrix	diagonal (size_t N)
	Returns a diagonal matrix.
static Matrix	extractBlock (const Matrix &A, size_t r0, size_t N, size_t c0, size_t M)
	Extract a subblock of a matrix into a new matrix.
static void	saveAsc (const Matrix &A, const std::string &file)
	Save a matrix as a dense asc file.

Detailed Description

Helper class with some matrix operations.

Member Function Documentation

augment()

Matrix Opm::Elasticity::MatrixOps::augment ( const Matrix & A, const Matrix & B, size_t r0, size_t c0, bool symmetric )

static

Augment a matrix with another.

Parameters

[in]	A	The matrix to be augmented
[in]	B	The matrix to augment with
[in]	r0	The starting row of the augment matrix
[in]	c0	The starting column of the augment matrix
[in]	symmetric	If true, augment symmetrically

Axpy()

Matrix Opm::Elasticity::MatrixOps::Axpy ( const Matrix & A, const Matrix & B, double alpha )

static

axpy like operation - returns A+alpha*B

Parameters

[in]	A	The matrix to subtract from
[in]	B	The matrix to subtract
[in]	alpha	The constant in front of B

Returns

A+alpha*B

diagonal()

Matrix Opm::Elasticity::MatrixOps::diagonal ( size_t N )

static

Returns a diagonal matrix.

Parameters

[in]

N

The dimension of the matrix

extractBlock()

Matrix Opm::Elasticity::MatrixOps::extractBlock ( const Matrix & A, size_t r0, size_t N, size_t c0, size_t M )

static

Extract a subblock of a matrix into a new matrix.

Parameters

[in]	A	The matrix to extract from
[in]	r0	First row index for block
[in]	N	Number of rows in block
[in]	c0	First column index for block
[in]	M	Number of colums in block

Returns

The subblock

extractDiagonal()

Matrix Opm::Elasticity::MatrixOps::extractDiagonal ( const Matrix & A )

static

Extract the diagonal of a matrix into a new matrix.

Parameters

[in]

A

The matrix to extract the diagonal from

Returns

M = diag(A)

fromAdjacency()

void Opm::Elasticity::MatrixOps::fromAdjacency ( Matrix & A, const AdjacencyPattern & adj, int rows, int cols )

static

Create a sparse matrix from a given adjacency pattern.

Parameters

[in]	adj	The adjacency pattern
[in]	rows	The number of rows in the matrix
[in]	cols	The number of columns in the matrix
[out]	A	The created matrix

fromDense()

Matrix Opm::Elasticity::MatrixOps::fromDense ( const Dune::DynamicMatrix< double > & T )

static

Create a sparse matrix from a dense matrix.

Parameters

[in]

T

The dense matrix

Returns

The sparse matrix

print()

void Opm::Elasticity::MatrixOps::print ( const Matrix & A )

static

Print a matrix to stdout.

Parameters

[in]

A

The matrix to print

saveAsc()

void Opm::Elasticity::MatrixOps::saveAsc ( const Matrix & A, const std::string & file )

static

Save a matrix as a dense asc file.

Parameters

[in]	A	The matrix to save
[in]	file	File name

This is only useful for debugging as the files grow very big

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The documentation for this class was generated from the following files:

• opm/elasticity/matrixops.hpp
• opm/elasticity/matrixops.cpp