Overload List
| # | Signature | Description |
|---|---|---|
| 1 | TMtxVec *PowerSpectrum(TMtxVec *Vec) const; | The power spectrum from object complex values. |
| 2 | TMtxVec *PowerSpectrum(TMtxVec *Vec, int VecIndex, int Index, int Len) const; | Calculates the power spectrum from the Vec complex elements [VecIndex]..[VecIndex+Len-1]. |
Overload 1: TMtxVec *PowerSpectrum(TMtxVec *Vec) const;
The power spectrum from object complex values.
| # | Name | Type | Description |
|---|---|---|---|
| 1 | Vec | TMtxVec * |
Remarks:
Calculates the power spectrum from the Vec object complex values and stores the results (power spectrum) in the real calling object. Size and Matrix::Complex properties of the calling object are set implicitly to match Vec object. The spectrum elements are squares of the magnitudes of the complex input elements:
Examples
#include "MtxExpr.h"
using namespace Dew;
using namespace Dew::Math;
void Example()
{
Matrix a, b;
a.SetIt(1, 2, true, DewArray<double>{1, 2, 3, -4}); // a = [1 + 2i, 3 - 4i]
b.PowerSpectrum(a); // b = [1*1 + 2*2, 3*3+(-4)*(-4)]
}See Also: Matrix::PhaseSpectrum
Declared in Dew::Math::Matrix · Dew.Math/MtxExpr.h · Cross-compiler
Overload 2: TMtxVec *PowerSpectrum(TMtxVec *Vec, int VecIndex, int Index, int Len) const;
Calculates the power spectrum from the Vec complex elements [VecIndex]..[VecIndex+Len-1].
| # | Name | Type | Description |
|---|---|---|---|
| 1 | Vec | TMtxVec * | |
| 2 | VecIndex | int | |
| 3 | Index | int | |
| 4 | Len | int |
Remarks:
Store the results in calling object real elements [Index]..[Index+Len-1]. An exception is raised if calling object Matrix::Complex property is true or if array borders are overrun/underrun.
Examples
#include "MtxExpr.h"
#include "Units.Math387.h"
using namespace Dew;
using namespace Dew::Math;
using namespace Dew::Math::Units::Math387;
void Example()
{
Matrix a, b;
a = {{Cplx(1, 2), Cplx(3, -4)}}; // a = [1 + 2i, 3 - 4i]
b.PowerSpectrum(a); // b = [1*1 + 2*2, 3*3+(-4)*(-4)]
}Declared in Dew::Math::Matrix · Dew.Math/MtxExpr.h · Cross-compiler