DFStringColumnApply(String, FuncDouble, Double, Double, Double) Method

Returns a new numeric column with the given name and same size as this column, whose values are the result of applying the given double binary function to each element of this column. The first parameter to the binary function is the column element; the second parameter is the passed double-precision value.

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

Syntax

C++

Copy

public DFNumericColumn Apply(
	string name,
	Func<double, double, double> function,
	double d
)

Public Function Apply ( 
	name As String,
	function As Func(Of Double, Double, Double),
	d As Double
) As DFNumericColumn

public:
DFNumericColumn^ Apply(
	String^ name, 
	Func<double, double, double>^ function, 
	double d
)

member Apply : 
        name : string * 
        function : Func<float, float, float> * 
        d : float -> DFNumericColumn

Parameters

name String: Name for the new column.
function FuncDouble, Double, Double: A delegate object representing a function that takes two double parameters and returns a double.
d Double: The second parameter to function.

Return Value

DFNumericColumn
A column with the same name and size as self and with c[i] = function( this[i], d )

Exceptions

Exception	Condition
InvalidArgumentException	Thrown if the values in this column cannot be converted to numeric values.

Remarks

An attempt will be made to convert each value in this column to a double to perform the operation. No data in this column will be changed.

Reference

DFStringColumn Class

Apply Overload

CenterSpace.NMath.Core Namespace