MeasuresScatter Method (Double, Double, Double, Int32)

Calculates the scatter matrix of a sample matrix.

Namespace: Accord.Statistics
Assembly: Accord.Math (in Accord.Math.dll) Version: 3.8.0

Syntax

public static double[][] Scatter(
	double[][] matrix,
	double[] means,
	double divisor,
	int dimension
)

Public Shared Function Scatter ( 
	matrix As Double()(),
	means As Double(),
	divisor As Double,
	dimension As Integer
) As Double()()

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Parameters

matrix: Type: SystemDouble
A number multi-dimensional array containing the matrix values.
means: Type: SystemDouble
The mean value of the given values, if already known.
divisor: Type: SystemDouble
A real number to divide each member of the matrix.
dimension: Type: SystemInt32
Pass 0 to if mean vector is a row vector, 1 otherwise. Default value is 0.

Return Value

Type: Double
The covariance matrix.

Remarks

By dividing the Scatter matrix by the sample size, we get the population Covariance matrix. By dividing by the sample size minus one, we get the sample Covariance matrix.

Reference

Measures Class

Scatter Overload

Accord.Statistics Namespace