TOpenCLVector.StdDev Method

Overload List

#	Signature	Description
1	function StdDev: Double;	Standard deviation.
	└ indexed: function StdDev(Index: Integer; Len: Integer): Double;
2	function StdDev(ASum: Double; aSumSqr: Double): Double;	Returns the standard deviation of all calling object elements.
	└ indexed: function StdDev(ASum: Double; aSumSqr: Double; Index: Integer; Len: Integer): Double;

Overload 1: function StdDev: Double;

Standard deviation.

Returns: Double

Remarks:

Calculate the standard deviation of all calling object elements. The result is a real value. An exception is raised if calling vector TOpenCLBase.Complex property is true.

Examples

var a: clVector;
    c: double;
    aMean: double;
begin
    a.CopyFromArray(TDoubleArray.Create(1,2,3,4));
    Caption := FloatToSTr(a.StdDev);
end;

Indexed: function StdDev(Index: Integer; Len: Integer): Double;

Returns the standard deviation of calling object elements [Index]..[Index+Len-1].

#	Name	Type	Description
1	Index	Integer	start index
2	Len	Integer	element count

Returns: Double

Remarks:

An exception is raised if calling object TOpenCLBase.Complex property is true or if array borders are overrun/underrun.

Overload 2: function StdDev(ASum: Double; aSumSqr: Double): Double;

Returns the standard deviation of all calling object elements.

#	Name	Type	Description
1	ASum	Double	output sum
2	aSumSqr	Double	scalar

Returns: Double

Remarks:

The sum and the sum of squares of all calling object elements must be passed as parameters. An exception is raised if calling object TOpenCLBase.Complex property is true.

Indexed: function StdDev(ASum: Double; aSumSqr: Double; Index: Integer; Len: Integer): Double;

Returns the standard deviation of calling object elements [Index]..[Index+Len-1].

#	Name	Type	Description
1	ASum	Double	output sum
2	aSumSqr	Double	scalar
3	Index	Integer	start index
4	Len	Integer	element count

Returns: Double

Remarks:

The sum and the sum of squares of the coresponding elements must be passed as parameters. An exception is raised if calling object TOpenCLBase.Complex property is true or if array borders are overrun/underrun.