DenseMatrix<T, TSlice, TStorage2D>.ExtractLowerTriangle Method

Definition

Namespace: Numerics.NET.LinearAlgebra
Assembly: Numerics.NET (in Numerics.NET.dll) Version: 9.0.3

Overload List

ExtractLowerTriangle(MatrixDiagonal)	Constructs a TriangularMatrix<T> whose elements are contained in the lower triangular portion of a DenseMatrix<T>.
ExtractLowerTriangle(Int32, Int32, MatrixDiagonal, Int32, Int32)	Constructs a TriangularMatrix<T> whose elements are contained in the lower triangular portion of a DenseMatrix<T>.

ExtractLowerTriangle(Int32, Int32, MatrixDiagonal, Int32, Int32)

Constructs a TriangularMatrix<T> whose elements are contained in the lower triangular portion of a DenseMatrix<T>.

public override TriangularMatrix<T> ExtractLowerTriangle(
	int rowCount,
	int columnCount,
	MatrixDiagonal unitDiagonal = MatrixDiagonal.NonUnitDiagonal,
	int startRow = 0,
	int startColumn = 0
)

Visual Basic

Public Overrides Function ExtractLowerTriangle ( 
	rowCount As Integer,
	columnCount As Integer,
	Optional unitDiagonal As MatrixDiagonal = MatrixDiagonal.NonUnitDiagonal,
	Optional startRow As Integer = 0,
	Optional startColumn As Integer = 0
) As TriangularMatrix(Of T)

C++/CLI

public:
virtual TriangularMatrix<T>^ ExtractLowerTriangle(
	int rowCount, 
	int columnCount, 
	MatrixDiagonal unitDiagonal = MatrixDiagonal::NonUnitDiagonal, 
	int startRow = 0, 
	int startColumn = 0
) override

abstract ExtractLowerTriangle : 
        rowCount : int * 
        columnCount : int * 
        ?unitDiagonal : MatrixDiagonal * 
        ?startRow : int * 
        ?startColumn : int 
(* Defaults:
        let _unitDiagonal = defaultArg unitDiagonal MatrixDiagonal.NonUnitDiagonal
        let _startRow = defaultArg startRow 0
        let _startColumn = defaultArg startColumn 0
*)
-> TriangularMatrix<'T> 
override ExtractLowerTriangle : 
        rowCount : int * 
        columnCount : int * 
        ?unitDiagonal : MatrixDiagonal * 
        ?startRow : int * 
        ?startColumn : int 
(* Defaults:
        let _unitDiagonal = defaultArg unitDiagonal MatrixDiagonal.NonUnitDiagonal
        let _startRow = defaultArg startRow 0
        let _startColumn = defaultArg startColumn 0
*)
-> TriangularMatrix<'T>

Parameters

rowCount Int32: The number of rows in the TriangularMatrix<T>.
columnCount Int32: The number of columns in the TriangularMatrix<T>.
unitDiagonal MatrixDiagonal (Optional): If true, the matrix is unit triangular. Only the elements below the diagonal in the matrix are considered. If false, the diagonal elements of the matrix are taken as the diagonal elements of the triangular matrix.
startRow Int32 (Optional): The row in the matrix of the first element of the new matrix.
startColumn Int32 (Optional): The column in the matrix of the first element of the new matrix.

Return Value

TriangularMatrix<T>
A TriangularMatrix<T> whose elements are contained in the lower triangular portion of the matrix.

Exceptions

ArgumentNullException

the matrix is null.

ArgumentOutOfRangeException

rowCount is less than zero or greater than or equal to the number of rows in the matrix.

-or-

columnCount is less than zero or greater than or equal to the number of columns in the matrix.