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Skip Navigation LinksHome»Documentation»Reference»Extreme.DataAnalysis»VectorExtensions Class»Methods»ReferenceIndex Method Overloads»ReferenceIndex Method (Vector(Double), Int32, Double)

VectorExtensionsReferenceIndex Method (VectorDouble, Int32, Double)

Extreme Optimization Numerical Libraries for .NET Professional
Returns a vector that represents an index value relative to the specified base value.

Namespace:  Extreme.DataAnalysis
Assembly:  Extreme.Numerics (in Extreme.Numerics.dll) Version: 8.1.1
Syntax

C#
VB
C++
F#
Copy
public static Vector<double> ReferenceIndex(
	this Vector<double> vector,
	int baseIndex,
	double indexBaseValue
)
<ExtensionAttribute>
Public Shared Function ReferenceIndex ( 
	vector As Vector(Of Double),
	baseIndex As Integer,
	indexBaseValue As Double
) As Vector(Of Double)
public:
[ExtensionAttribute]
static Vector<double>^ ReferenceIndex(
	Vector<double>^ vector, 
	int baseIndex, 
	double indexBaseValue
)
[<ExtensionAttribute>]
static member ReferenceIndex : 
        vector : Vector<float> * 
        baseIndex : int * 
        indexBaseValue : float -> Vector<float> 

Parameters

vector
Type: Extreme.MathematicsVectorDouble
The vector to transform.
baseIndex
Type: SystemInt32
The zero-based index of the observation that is to be used as the reference value.
indexBaseValue
Type: SystemDouble
A real number that specifies the value of the index at the base value.

Return Value

Type: VectorDouble
A vector.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type VectorDouble. 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).
Exceptions

ExceptionCondition
ArgumentOutOfRangeExceptionbaseIndex is less than zero or greater than or equal to the number of observations of the vector.
See Also

Reference

VectorExtensions Class
ReferenceIndex Overload
Extreme.DataAnalysis Namespace

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