JQuantile.cc

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#include <string>
#include <iostream>
#include <iomanip>

#include "TRandom.h"

#include "JTools/JQuantile.hh"

#include "Jeep/JParser.hh"
#include "Jeep/JMessage.hh"


/**
 * \file
 *
 * Example program to test JTOOLS::JQuantile calculation.
 * \author mdejong
 */
int main(int argc, char **argv)
{
  using namespace std;
  using namespace JPP;

  int       numberOfEvents;
  double    x;
  double    sigma;
  UInt_t    seed;
  int       debug;

  try {

    JParser<> zap("Example program to test quantile calculation.");

    zap['n'] = make_field(numberOfEvents);
    zap['x'] = make_field(x)              = 0.0;
    zap['s'] = make_field(sigma)          = 1.0;
    zap['S'] = make_field(seed)           = 0;
    zap['d'] = make_field(debug)          = 3;

    zap(argc, argv);
  }
  catch(const exception &error) {
    FATAL(error.what() << endl);
  }

  if (numberOfEvents < 2) {
    FATAL("Fatal error: number of events " << numberOfEvents << endl);
  }

  gRandom->SetSeed(seed);

  JQuantile quantile;

  for (int i = 0; i != numberOfEvents; ++i) {
    quantile.put(gRandom->Gaus(x, sigma));
  }

  NOTICE("quantity  " << CENTER(10)  <<   "calculated"      << " | " << CENTER(10)  << "true" << endl);
  NOTICE("mean      " << FIXED(10,3) << quantile.getMean()  << " | " << FIXED(10,3) <<  x     << endl);
  NOTICE("RMS       " << FIXED(10,3) << quantile.getSTDev() << " | " << FIXED(10,3) <<  sigma << endl);
}