ocmath_quantiles

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

Description

Function to compute quantiles including Min, iMin, Max, iMax, Range and IQR for a vector.

Syntax

int ocmath_quantiles( const double * pData, UINT nSize, const QuantileOptions * opt, QuantileResults * res, const double * pPercents = NULL, UINT nPercentSize = 0, double * pPercentiles = NULL, const double * pWeight = NULL )

Parameters

pData: [input] pointer to data on which quantiles are computed
nSize: [input] value indicates the size of pData
opt: [input] pointer to structure of quantile options
res: [output] pointer to structure containing quantile results
pPercents: [input] Optional input pointer to custom percents for which percentiles are computed
nPercentSize: [input] Optional, size of pPercents
pPercentiles: [output] Optional output vector containing custom percentiles (results)
pWeight: [input] Optional input pointer to weights.

Return

Returns STATS_NO_ERROR on successful exit and a non-zero STATS error code on failure.

Examples

EX1

void ocmath_quantiles_ex1()
{
    vector vData = { 1.1, 0.1, 2.2, 4.3, -4.2, 5.2, 1.6, 7.2, 0.8, 3.5 };
    int nSize = vData.GetSize();
    QuantileOptions opt;
    QuantileResults res;
    vector pPercents;
    vector pPercentiles;
    int nRet;
    opt.Min = true;
    opt.iMin = true;
    opt.Q1 = true;
    opt.Median = true;
    opt.Q3 = true;
    opt.Max = true;
    opt.iMax = true;
    opt.IQR = true;
    opt.Range = true;    
    int nPercentSize = 4;
    pPercents.SetSize(nPercentSize);
    pPercents[0] = 78;
    pPercents[1] = 41;
    pPercents[2] = 21;
    pPercents[3] = 6;    
    opt.Interpolate = INTERPOLATE_WEIGHT_AVER_RIGHT;        
    nRet = ocmath_quantiles(vData, nSize, &opt, &res, pPercents, nPercentSize, pPercentiles);    
}