TMtx::Mean Method

Overload List

#	Signature	Description
1	double Mean();	Mean value.
2	double Mean(int Index, int Len);	Returns real mean value from calling object elements [Index]..[Index+Len-1].
3	void Mean(double &AMean, int Index, int Len);	Calculate the mean value from calling object elements [Index]..[Index+Len-1].
4	void Mean(TCplx &AMean);	Same as TMtx::Meanc.
5	void Mean(TCplx &AMean, int Index, int Len);	Same as TMtx::Meanc.

Overload 1: double Mean();

Mean value.

Remarks:

Calculate the mean value of all calling object elements. The result is a real value. An exception is raised if calling object TMtx::Complex property is true.

Examples

#include "Units.MtxVec.h"

using namespace Dew;
using namespace Dew::Math;
using namespace Dew::Math::Units::MtxVec;

void Example()
{
    TVec* a;
    CreateIt(a);
    a->SetIt(false, DewArray<double>{1,2,3,4});
    double m = a->Mean(); // 2.5
    FreeIt(a);
}

#include "MtxExpr.h"
#include "Units.Math387.h"

using namespace Dew;
using namespace Dew::Math;
using namespace Dew::Math::Units::Math387;

void Example()
{
    Vector a;
    a.SetIt(DewArray<double>{ 1.0, 2.0, 3.0, 4.0 });
    double result = a.Mean();
    if (Abs(result - 2.5) > 1e-10)
        throw tException(DewString("Vector.Mean: expected 2.5, got ") + SampleToStr(result));
}

See Also: TMtx::Sum, TMtx::Meanc