HistObject Class Reference

Class to keep track of delta histograms. More...

#include <HistObject.h>

Public Member Functions
	HistObject (void)
	Constructor.
bool	update (TH1 *hist)
	Check if update of histogram is necessary. More...
void	resetBeforeEvent (void)
	Reset histogram and update flag, not the entries.
bool	isUpdated (void)
	Check if hist was updated. More...
TH1 *	getHist (void)
	Get hist pointer. More...

Public Attributes
TH1 *	m_hist {}
	Pointer to histogram.
bool	m_updated = false
	flag if update since last event
double	m_entries = -1
	entries in previous/current for update check

Detailed Description

Class to keep track of delta histograms.

Definition at line 21 of file HistObject.h.

Member Function Documentation

getHist()

TH1* getHist ( void  )

inline

Get hist pointer.

Returns

hist ptr

Definition at line 50 of file HistObject.h.

{ return m_hist;};

isUpdated()

bool isUpdated ( void  )

inline

Check if hist was updated.

Returns

it was updated

Definition at line 45 of file HistObject.h.

update()

bool update

(

TH1 *

hist

)

Check if update of histogram is necessary.

Parameters

hist	pointer to histogram

Returns

histogram was updated flag (return m_updated)

Definition at line 12 of file HistObject.cc.

{
  if (hist) {
    // usual check for nullptr
    m_updated |= hist->GetEntries() != m_entries;
    m_entries = hist->GetEntries();
  }
  m_hist = hist; // even if it is nullptr
  return m_updated;
}

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

• dqm/analysis/include/HistObject.h
• dqm/analysis/src/HistObject.cc