simple_stat.h File Reference

#include <algorithm>
#include <numeric>
#include <cmath>

Go to the source code of this file.

Functions
template<class CONT >
double	stat_mean (const CONT &cont)
template<class CONT >
double	stat_RMS (const CONT &cont)

Function Documentation

template<class CONT >

double stat_mean

(

const CONT &

cont

)

A trivial class computing the mean value of objects in any STL container.

Definition at line 13 of file simple_stat.h.

Referenced by TIBRing::checkPeriodicity().

                                   {
  double sum = accumulate(cont.begin(), cont.end(), 0.);
  return sum / cont.size();
}

template<class CONT >

double stat_RMS

(

const CONT &

cont

)

A simple class computing the R.M.S. of objects in any STL container.

Definition at line 23 of file simple_stat.h.

References mps_fire::i, SiStripPI::max, N, and mathSSE::sqrt().

Referenced by PhiBorderFinder::PhiBorderFinder(), and RBorderFinder::RBorderFinder().

                                  {
  typename CONT::const_iterator i;

  int N = cont.size();
  if (N > 1) {
    double sum = 0., sum2 = 0.;
    for (i = cont.begin(); i != cont.end(); i++) {
      sum += *i;
      sum2 += (*i) * (*i);
    }
    return sqrt(std::max(0., (sum2 - sum * sum / N) / (N - 1)));
  } else
    return 0.;
}