LinearOperator<T>.Create Method

Creates a linear operator from a vector multiplication function.

Definition

Namespace: Numerics.NET.LinearAlgebra
Assembly: Numerics.NET (in Numerics.NET.dll) Version: 10.9.0

public static LinearOperator<T> Create(
	int rowCount,
	int columnCount,
	Func<TransposeOperation, Vector<T>, Vector<T>?, Vector<T>> multiply
)

Visual Basic

Public Shared Function Create ( 
	rowCount As Integer,
	columnCount As Integer,
	multiply As Func(Of TransposeOperation, Vector(Of T), Vector(Of T), Vector(Of T))
) As LinearOperator(Of T)

C++/CLI

public:
static LinearOperator<T>^ Create(
	int rowCount, 
	int columnCount, 
	Func<TransposeOperation, Vector<T>^, Vector<T>^, Vector<T>^>^ multiply
)

static member Create : 
        rowCount : int * 
        columnCount : int * 
        multiply : Func<TransposeOperation, Vector<'T>, Vector<'T>, Vector<'T>> -> LinearOperator<'T>

Parameters

rowCount Int32: The nonnegative number of rows.
columnCount Int32: The nonnegative number of columns.
multiply Func<TransposeOperation, Vector<T>, Vector<T>, Vector<T>>: A function receiving the requested transpose operation, input vector and optional destination. Return the product, overwriting every result component. The destination may be null. Implement supported transpose operations or throw NotSupportedException.

Return Value

LinearOperator<T>
A multiplication operator. Direct and least-squares solves are not supported.

Remarks

The delegate is retained. Concurrent use requires a thread-safe delegate. Input and output vectors that are the same instance are separated by copying the input. Returning a different vector is supported; its values are copied into a requested destination. A returned null or wrong-sized vector is rejected.

Exceptions

ArgumentNullException	The multiplication function is null.
ArgumentOutOfRangeException	A dimension is negative.