VectorExtensions.PositiveToNegativeRatio Method

Returns a vector that represents the ratio of positive to negative values in the specified period..

Definition

Namespace: Extreme.DataAnalysis
Assembly: Extreme.Numerics (in Extreme.Numerics.dll) Version: 8.1.23

public static Vector<double> PositiveToNegativeRatio(
	this Vector<double> vector,
	int length,
	Vector<double> referenceVariable
)

Visual Basic

<ExtensionAttribute>
Public Shared Function PositiveToNegativeRatio ( 
	vector As Vector(Of Double),
	length As Integer,
	referenceVariable As Vector(Of Double)
) As Vector(Of Double)

C++/CLI

public:
[ExtensionAttribute]
static Vector<double>^ PositiveToNegativeRatio(
	Vector<double>^ vector, 
	int length, 
	Vector<double>^ referenceVariable
)

[<ExtensionAttribute>]
static member PositiveToNegativeRatio : 
        vector : Vector<float> * 
        length : int * 
        referenceVariable : Vector<float> -> Vector<float>

Parameters

vector Vector<Double>: The vector to transform.
length Int32: The number of observations in the range.
referenceVariable Vector<Double>: A vector whose observations determine whether the current observation is added to the positive or the negative side of the ratio.

Return Value

Vector<Double>
A vector.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type Vector<Double>. 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).

Remarks

This method calculates the ratio of the sum of observations within the specified period where the corresponding observation of referenceVariable is positive, and the sum of observations where referenceVariable is negative.

Exceptions

ArgumentOutOfRangeException	length is less than or equal to zero.
ArgumentNullException	referenceVariable is null.
DimensionMismatchException	The length of referenceVariable does not match the length of the vector.