ToolsStandardize Method (Double, Double, Boolean, Double)

Standardizes column data, removing the empirical standard deviation from each variable.

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

Syntax

public static double[,] Standardize(
	this double[,] matrix,
	double[] standardDeviations,
	bool inPlace = false,
	double tol = 1E-12
)

<ExtensionAttribute>
Public Shared Function Standardize ( 
	matrix As Double(,),
	standardDeviations As Double(),
	Optional inPlace As Boolean = false,
	Optional tol As Double = 1E-12
) As Double(,)

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Parameters

matrix: Type: SystemDouble
A matrix where each column represent a variable and each row represent a observation.
standardDeviations: Type: SystemDouble
The values' standard deviation vector, if already known.
inPlace (Optional): Type: SystemBoolean
True to perform the operation in place, altering the original input matrix.
tol (Optional): Type: SystemDouble
The minimum value that will be taken as the standard deviation in case the deviation is too close to zero.

Return Value

Type: Double

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type . When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).

Remarks

This method does not remove the empirical mean prior to execution.

Reference

Tools Class

Standardize Overload

Accord.Statistics Namespace