MatrixSubmatrixT Method (T, Int32, Int32, Boolean)

Returns a sub matrix extracted from the current matrix.

Namespace: Accord.Math
Assembly: Accord.Math (in Accord.Math.dll) Version: 3.8.0

Syntax

Copy

public static T[][] Submatrix<T>(
	this T[][] source,
	int[] rowIndexes,
	int[] columnIndexes,
	bool reuseMemory = false
)

<ExtensionAttribute>
Public Shared Function Submatrix(Of T) ( 
	source As T()(),
	rowIndexes As Integer(),
	columnIndexes As Integer(),
	Optional reuseMemory As Boolean = false
) As T()()

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Parameters

source: Type: T
The matrix to return the submatrix from.
rowIndexes: Type: SystemInt32
Array of row indices. Pass null to select all indices.
columnIndexes: Type: SystemInt32
Array of column indices. Pass null to select all indices.
reuseMemory (Optional): Type: SystemBoolean
Set to true to avoid memory allocations when possible. This might result on the shallow copies of some elements. Default is false (default is to always provide a true, deep copy of every element in the matrices, using more memory).

Type Parameters

T

Return Value

Type: T

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type . When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).

Reference

Matrix Class

Submatrix Overload

Accord.Math Namespace