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2.1.23.1.1 ocmath_calc_peak_moments


Contents

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);
}

Remark

See Also

Header to Include

origin.h

Reference