sistrip::MeanAndStdDev Class Reference

#include <Utility.h>

Classes
class	Params

Public Member Functions
void	add (const float &value, const float &error)
void	fit (Params &fit_params)
	MeanAndStdDev ()
	~MeanAndStdDev ()

Private Attributes
float	s_
std::vector< float >	vec_
float	x_
float	xx_

Detailed Description

Definition at line 55 of file Utility.h.

Constructor & Destructor Documentation

sistrip::MeanAndStdDev::MeanAndStdDev

(

)

Definition at line 78 of file Utility.cc.

  : s_(0.),
    x_(0.),
    xx_(0.),
    vec_()
{;}

sistrip::MeanAndStdDev::~MeanAndStdDev ( )

inline

Definition at line 61 of file Utility.h.

{;}

Member Function Documentation

void sistrip::MeanAndStdDev::add	(	const float &	value,
		const float &	error
	)

Definition at line 87 of file Utility.cc.

References mathSSE::sqrt(), and vdt::x.

                              {
  if ( e > 0. ) { 
    float wt = 1. / sqrt(e); 
    s_ += wt;
    x_ += x*wt;
    xx_ += x*x*wt;
  } else {
    s_++;
    x_ += x;
    xx_ += x*x;
  }
  vec_.push_back(x);
}

void sistrip::MeanAndStdDev::fit

(

Params &

fit_params

)

Definition at line 104 of file Utility.cc.

References getHLTprescales::index, m, sistrip::MeanAndStdDev::Params::mean_, sistrip::MeanAndStdDev::Params::median_, sistrip::MeanAndStdDev::Params::rms_, python.multivaluedict::sort(), mathSSE::sqrt(), and lumiQTWidget::t.

                                               {
  if ( s_ > 0. ) { 
    float m = x_/s_;
    float t = xx_/s_ - m*m;
    if ( t > 0. ) { t = sqrt(t); } 
    else { t = 0.; }
    params.mean_ = m;
    params.rms_  = t;
  }
  if ( !vec_.empty() ) {
    sort( vec_.begin(), vec_.end() );
    uint16_t index = vec_.size()%2 ? vec_.size()/2 : vec_.size()/2-1;
    params.median_ = vec_[index];
  }      
}

Member Data Documentation

float sistrip::MeanAndStdDev::s_

private

Definition at line 82 of file Utility.h.

std::vector<float> sistrip::MeanAndStdDev::vec_

private

Definition at line 85 of file Utility.h.

float sistrip::MeanAndStdDev::x_

private

Definition at line 83 of file Utility.h.

float sistrip::MeanAndStdDev::xx_

private

Definition at line 84 of file Utility.h.