ocmath_calc_peak_moments

1 Description
2 Syntax
3 Parameters
4 Return
5 Examples
6 Remark
7 See Also
8 header to Include
9 Reference

Description

Calculate moments for the peak data use trapezoidal integration method

Syntax

int ocmath_calc_peak_moments( UINT nSize, const double * pX, const double * pY, double * pMoment, int nMomentType = OCMATH_PEAK_CENTRAL_MOMENT, uint nMomentOrder = 2 )

Parameters

nSize: [input] size of the peak data
pX: [input] pointer to x coordinates of the data
pY: [input] pointer to y coordinates of the data
pMoment: [output] the moment value wanted
nMomentType: [input] the type of the moment; OCMATH_PEAK_CENTRAL_MOMENT calculate central moment; OCMATH_PEAK_ZERO_POINT_MOMENT calculate zero point moment
nMomentOrder: [input] the order of the moment

Return

Return OE_NOERROR if succeed, otherwise, non-zero error code is returned.

Examples

EX1

void ocmath_calc_peak_moments_ex1()
{
    // the full peak data
    vector vx = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
    vector vy = {8.15988E-4,
                0.01832,
                0.16901,
                0.64118,
                1,
                0.64118,
                0.16901,
                0.01832,
                8.15988E-4,
                1.49453E-5}
    double dMoment;

    ocmath_calc_peak_moments(vx.GetSize(), vx, vy, &dMoment, OCMATH_PEAK_ZERO_POINT_MOMENT, 1);
    printf ("%lf\n", dMoment);
}