NMathFunctionsWeightedMedian(Double, Double) Method

Returns the weighted median of an array of data with associated non-negative weights. There must be at least one postive non-zero weight.

Namespace: CenterSpace.NMath.Core
Assembly: NMath (in NMath.dll) Version: 7.4

Syntax

public static double WeightedMedian(
	double[] data,
	double[] weights
)

Public Shared Function WeightedMedian ( 
	data As Double(),
	weights As Double()
) As Double

public:
static double WeightedMedian(
	array<double>^ data, 
	array<double>^ weights
)

static member WeightedMedian : 
        data : float[] * 
        weights : float[] -> float

Exceptions

Exception	Condition
InvalidArgumentException	The two lengths of the data and weights vectors must be equal.
InvalidArgumentException	There must be at least one postive non-zero weight.
InvalidArgumentException	All weights must be non-negative. At least one negative weight was found.

Remarks

If the lower sum of the weights is equal the weight's midpoint, then the average of the adjacent two datapoints is returned.