Removes a set of observations from the discriminant functions.

Namespace: Imsl.Stat
Assembly: ImslCS (in ImslCS.dll) Version: 6.5.0.0

Syntax

C#
public void Downdate(
	double[,] x,
	int[] group,
	int[] varIndex
)
Visual Basic (Declaration)
Public Sub Downdate ( _
	x As Double(,), _
	group As Integer(), _
	varIndex As Integer() _
)
Visual C++
public:
void Downdate(
	array<double,2>^ x, 
	array<int>^ group, 
	array<int>^ varIndex
)

Parameters

x
Type: array< System..::.Double ,2>[,](,)[,]
A double matrix containing the observations to be removed, with at least nVariables columns. The columns indicated in varIndex correspond to the variables.
group
Type: array< System..::.Int32 >[]()[]
An int array containing the group numbers. The groups must be numbered 1,2, ..., nGroups for each observation.
varIndex
Type: array< System..::.Int32 >[]()[]
An int array containing the column indices in x that correspond to the variables to be used in the analysis.

Exceptions

ExceptionCondition
Imsl.Stat..::.SumOfWeightsNegException is thrown when the sum of the weights have become negative.

See Also