NMathFunctionsIf(IDFColumn, FuncInt32, Boolean, Int32, Int32) Method

Creates a new column by applying a logical function to the elements of a column. Elements in the original column that return true are set to the given true value in the new column; elements that return false are set to the given false value.

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

Syntax

C++

Copy

public static IDFColumn If(
	IDFColumn data,
	Func<int, bool> function,
	int ifTrue,
	int ifFalse
)

Public Shared Function If ( 
	data As IDFColumn,
	function As Func(Of Integer, Boolean),
	ifTrue As Integer,
	ifFalse As Integer
) As IDFColumn

public:
static IDFColumn^ If(
	IDFColumn^ data, 
	Func<int, bool>^ function, 
	int ifTrue, 
	int ifFalse
)

static member If : 
        data : IDFColumn * 
        function : Func<int, bool> * 
        ifTrue : int * 
        ifFalse : int -> IDFColumn

Parameters

data IDFColumn: A column.
function FuncInt32, Boolean: A function that takes an integer and returns a boolean.
ifTrue Int32: Value in case of true.
ifFalse Int32: Value in case of false.

Return Value

IDFColumn
A new column.

Exceptions

Exception	Condition
InvalidArgumentException	Thrown if data is not a DFIntColumn or cannot be converted to integers.

Reference

NMathFunctions Class

If Overload

CenterSpace.NMath.Core Namespace