NMathFunctionsSumIf(Int32, FuncDouble, Boolean, Double) Method

Calculates the sum of elements in one array based on evaluating a logical function on corresponding elements in another data.

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

Syntax

public static double SumIf(
	int[] data,
	Func<double, bool> function,
	double[] sum
)

Public Shared Function SumIf ( 
	data As Integer(),
	function As Func(Of Double, Boolean),
	sum As Double()
) As Double

public:
static double SumIf(
	array<int>^ data, 
	Func<double, bool>^ function, 
	array<double>^ sum
)

static member SumIf : 
        data : int[] * 
        function : Func<float, bool> * 
        sum : float[] -> float

data Int32: Evaluation data.
function FuncDouble, Boolean: A function that takes a double and returns a boolean.
sum Double: Sum data.

Double
A sum.

Exceptions

Exception	Condition
MismatchedSizeException	Thrown if data and sum do not have the same length;