ocmath_b_frequency_count

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

Description

Frequency Count for type byte.

Syntax

int ocmath_b_frequency_count( BYTE * pSource, uint nSourceSize, uint * pDest, uint nDestSize, BYTE bBinBegin, BYTE bBinIncrement )

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
bBinBegin: [input] first bin's left edge
bBinIncrement: [input] width of each bins

Return

Returns OE_NOERROR(0) on success.

Examples

EX1

void ocmath_b_frequency_count_Ex1()
{
    vector<byte> 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
    byte binW = 1;     //width of each bin
    int iSize = 5;     //size of vecFCount
    vecFCount.SetSize(iSize);
    uint nMissingValues = ocmath_b_minmax(vecData, i1, i2, NULL, &min, &max);

    bool bRet = ocmath_b_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]);
    
        }
}