NSDHistHelp Class Reference

#include <HistHelpers.h>

Static Public Member Functions
static TH1 *	scintResConvolve (TH1 *a_hist, double a_A, double a_B, double a_C)
static double	getIntegralCounts (double a_start, double a_stop, TH1 *a_hist, double &a_error)
static double	getBinWeightedAvg (double a_start, double a_stop, TH1 *a_hist, double &a_error)
static std::vector< double >	getGaussSeed (TH1 *a_hist)

Detailed Description

this namespace is intended to hold function generically useful for manipulating cern root histograms

Member Function Documentation

getBinWeightedAvg()

double NSDHistHelp::getBinWeightedAvg ( double  a_start, double  a_stop, TH1 *  a_hist, double &  a_error  )

static

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getGaussSeed()

std::vector< double > NSDHistHelp::getGaussSeed ( TH1 *  a_hist )

static

this function attempts to guess at pararmters for a gaussian fit of the supplied histogram. No attempt at estimating background is included

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getIntegralCounts()

double NSDHistHelp::getIntegralCounts ( double  a_start, double  a_stop, TH1 *  a_hist, double &  a_error  )

static

this function computes the approximate integral of a histogram from start to stop in the user range not the bin number. The error of the integral is made available via the a_error argument. It is assumed in the function that the start value is less than the stop value additionally the value of the bins should be a number quantity not normalizd by the axis (ie counts, not counts/MeV)

this function computes the approximate integral of a histogram from start to stop in the user range not the bin number. If bins don't fully overlap with the edge of the

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scintResConvolve()

TH1 * NSDHistHelp::scintResConvolve ( TH1 *  a_hist, double  a_A, double  a_B, double  a_C  )

static

this function is used to convolve a histogram with a scintillator resolution function using a Monte Carlo method.

create a copy of the hist with a new name

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The documentation for this class was generated from the following files:

• BasicSupport/include/HistHelpers.h
• BasicSupport/src/HistHelpers.cpp