2.1.24.4.46 ocmath_us_frequency_count

Description

Frequency Count for type ushort.

Syntax

int ocmath_us_frequency_count( USHORT * pSource, uint nSourceSize, uint * pDest, uint nDestSize, USHORT usBinBegin, USHORT usBinIncrement )

Parameters

pSource

[input] buffer containing data to be counted

nSourceSize

[input] size of pSource

pDest

[output] buffer of count results

nDestSize

[input] size of pDest

usBinBegin

[input] first bin's left edge

usBinIncrement

[input] width of each bins

Return

Returns OE_NOERROR(0) on success.

Examples

EX1

void ocmath_us_frequency_count_Ex1()
{
    vector<ushort> vecData = {1, 2, 3, 4, 5};
    vector<uint> vecFCount;    
    uint i1 = 0;
    uint i2 = vecData.GetSize()-1;
    uint min;          //the index for min value in vecData
    uint max;          //the index for max value in vecData
    ushort binW = 1;     //width of each bin
    int iSize = 5;     //size of vecFCount
    vecFCount.SetSize(iSize);
    uint nMissingValues = ocmath_us_minmax(vecData, i1, i2, NULL, &min, &max);

    bool bRet = ocmath_us_frequency_count(vecData, vecData.GetSize(), vecFCount, vecFCount.GetSize(), vecData[min], binW);
    vector binCenter;
    binCenter.Data(vecData[min]+binW/2, vecData[max]-binW/2, binW); // Calculate bin center data
    for (int i = 0; i < iSize; i++)
    	{
    	printf("%.0f\t",binCenter[i]);
    	printf("%d\n",vecFCount[i]);
    
    	}
}

Remark

Count the frequency from usBinBegin to usBinIncrement* nDestSize ([usBinBegin, usBinIncrement* nDestSize))with usBinIncrement as interval.

See Also

vectorbase::FrequencyCount, ocmath_f_frequency_count, ocmath_b_frequency_count

Header to Include

origin.h

Reference