HistDelta Class Reference

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

#include <HistDelta.h>

Collaboration diagram for HistDelta:

Public Types
enum	EDeltaType {   c_Disabled = 0 ,   c_Entries = 1 ,   c_Underflow = 2 ,   c_Events = 3 }
	enum definition for delta algo Disabled: nothing Entries: use nr histogram entries Underflow: use entries in histogram underflow bin Events: use nr processed events from framework (but: unreliable for normalization as the number of events for this specific histogram may differ)

Public Member Functions
	HistDelta (EDeltaType t=c_Disabled, int p=0, unsigned int a=0)
	Construktor. More...
void	set (EDeltaType t, int p, unsigned int a)
	Parameter setter. More...
void	setNotUpdated (void)
	Set not-updated yet status.
void	update (TH1 *hist)
	Check if update of delta histogram is necessary. More...
void	reset (void)
	Reset histogram and deltas, not the parameters.
TH1 *	getDelta (unsigned int n=0, bool onlyIfUpdated=true)
	Get Delta Histogram. More...

Public Attributes
EDeltaType	m_type {}
	type of delta algo
int	m_parameter {}
	parameter depending on algo, e.g. More...
unsigned int	m_amountDeltas {}
	amount of past histograms, at least 1
TH1 *	m_lastHist {}
	Pointer to last histogram state for check.
int	m_lastValue {}
	last value for comparison, depending on type
std::vector< TH1 * >	m_deltaHists
	vector of histograms (max m_amountDeltas)
bool	m_updated {}
	if any delta was updated in this event

Detailed Description

Class to keep track of delta histograms.

Definition at line 23 of file HistDelta.h.

Constructor & Destructor Documentation

HistDelta()

HistDelta	(	EDeltaType	t = c_Disabled,
		int	p = 0,
		unsigned int	a = 0
	)

Construktor.

Parameters

t	type
p	parameter for type
a	amount of deletas in the past

Definition at line 15 of file HistDelta.cc.

{
  m_type = t;
  m_parameter = p;
  m_amountDeltas = a;
  m_lastHist = nullptr;
  m_lastValue = 0;
};

Member Function Documentation

getDelta()

TH1 * getDelta	(	unsigned int	n = 0,
		bool	onlyIfUpdated = true
	)

Get Delta Histogram.

Parameters

n	number of delta into the past, 0 is most recent one
onlyIfUpdated	req only updated deltas, return nullptr otherwise

Returns

Found histogram or nullptr

Definition at line 100 of file HistDelta.cc.

set()

void set	(	EDeltaType	t,
		int	p,
		unsigned int	a
	)

Parameter setter.

Parameters

t	type
p	parameter for type
a	amount of deltas in the past

Definition at line 24 of file HistDelta.cc.

update()

void update

(

TH1 *

hist

)

Check if update of delta histogram is necessary.

Parameters

hist	pointer to histogram

else { not (yet) enough data for update special case of initial sampling is not covered in this code -> leave it up to the user code e.g. if getDelta(0) returns a nullptr, the user code writer should decide if it is useful to use the basic histogram }

Definition at line 31 of file HistDelta.cc.

Member Data Documentation

m_parameter

int m_parameter {}

parameter depending on algo, e.g.

nr of entries or events

Definition at line 34 of file HistDelta.h.

---

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

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