DataFrameTabulate(Int32, Int32, FuncIDFColumn, Double) Method

Tabulates the results of applying the given delegate to the values in the specified data column for each level of the specified factor.

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

Syntax

C++

Copy

public DataFrame Tabulate(
	int factorColIndex,
	int dataColIndex,
	Func<IDFColumn, double> function
)

Public Function Tabulate ( 
	factorColIndex As Integer,
	dataColIndex As Integer,
	function As Func(Of IDFColumn, Double)
) As DataFrame

public:
DataFrame^ Tabulate(
	int factorColIndex, 
	int dataColIndex, 
	Func<IDFColumn^, double>^ function
)

member Tabulate : 
        factorColIndex : int * 
        dataColIndex : int * 
        function : Func<IDFColumn, float> -> DataFrame

Parameters

factorColIndex Int32: The index of the column for the grouping factor.
dataColIndex Int32: The index of the data column.
function FuncIDFColumn, Double: A delegate that takes a data frame column and returns a double-precision floating point number.

Return Value

DataFrame
A new data frame.

Remarks

The returned data frame has row keys containing the sorted, unique factor levels as strings. The only column, a DFNumericColumn named Results, contains the results of applying the given delegate to the values in the data column tabulated for each level of the factor.
A final row is appended, with key Overall, containing the results of applying the given delegate to all values in the data column.

Reference

DataFrame Class

Tabulate Overload

CenterSpace.NMath.Core Namespace