OMNeT++ Simulation Library  6.0.3
cAutoRangeHistogramStrategy Class Reference

#include <chistogramstrategy.h>

Description

A generic, very configurable histogram strategy that is meant to provide a good quality histogram for practical distributions, and creates uniform bins. This strategy uses precollection to gather input information about the distribution before setting up the bins.

Several parameters and constraints can be specified for setting up the bins: range lower and/or upper endpoint, bin size, number of bins, mode (integers or reals), and whether bin size rounding is to be used. If bin size rounding is turned on, a bin size of the form {1|2|5}*10^n is chosen, i.e. a power of ten, or two or five times a power of ten. When both endpoints of the range are left unspecified, the histogram range is derived by taking the range of the precollected observations and extending it symmetrically by a range extension factor. If one of the endpoints is specified by the user, that value is used instead of the computed one. The number of observations to precollect as well as the range extension factor can be configured. If the histogram mode (integers vs. reals) is left unspecified, it will be determined by examining the precollected values. In integers mode, bin edges will be whole numbers. If the histogram range and mode are all specified by the user, the precollection phase is skipped.

If there are inconsistent or conflicting settings, e.g. an explicitly given histogram range is not multiple of the bin size in integers mode, the bin setup algorithm will do "best effort" to set up the histogram instead of stopping with an exception.

This histogram strategy can auto-extend the histogram range by adding new bins at either end. One can also set up an upper limit to the number of histogram bins to prevent it from growing indefinitely. Bin merging can also be enabled: it will cause every two (or N) adjacent bins to be merged to reduce the number of bins if their number grows too high.

Collected infinities are counted as underflows/overflows, and they do not affect the histogram layout in any way.

Inheritance diagram for cAutoRangeHistogramStrategy:
cPrecollectionBasedHistogramStrategy cIHistogramStrategy cObject

Public Member Functions

Constructors, copying.
 cAutoRangeHistogramStrategy (Mode mode=cHistogram::MODE_AUTO)
 
 cAutoRangeHistogramStrategy (int numBins, Mode mode=cHistogram::MODE_AUTO)
 
 cAutoRangeHistogramStrategy (const cAutoRangeHistogramStrategy &other)
 
cAutoRangeHistogramStrategyoperator= (const cAutoRangeHistogramStrategy &other)
 
virtual cAutoRangeHistogramStrategydup () const override
 
Configuring.
double getUpperLimitHint () const
 
void setUpperLimitHint (double hi)
 
double getLowerLimitHint () const
 
void setLowerLimitHint (double lo)
 
double getRangeExtensionFactor () const
 
void setRangeExtensionFactor (double rangeExtensionFactor)
 
Mode getMode () const
 
void setMode (Mode mode)
 
double getBinSizeHint () const
 
void setBinSizeHint (double binSize)
 
bool getBinSizeRounding () const
 
void setBinSizeRounding (bool binSizeRounding)
 
int getNumBinsHint () const
 
void setNumBinsHint (int numBins)
 
void setAutoExtend (bool enable)
 
bool getAutoExtend () const
 
void setBinMerging (bool enable)
 
bool getBinMerging () const
 
int getMaxNumBins () const
 
void setMaxNumBins (int numBins)
 
Redefined cIHistogramStrategy methods.
virtual void collect (double value) override
 
virtual void collectWeighted (double value, double weight) override
 
virtual void clear () override
 
- Public Member Functions inherited from cPrecollectionBasedHistogramStrategy
 cPrecollectionBasedHistogramStrategy ()
 
 cPrecollectionBasedHistogramStrategy (const cPrecollectionBasedHistogramStrategy &other)
 
cPrecollectionBasedHistogramStrategyoperator= (const cPrecollectionBasedHistogramStrategy &other)
 
int getNumToPrecollect () const
 
void setNumToPrecollect (int numToPrecollect)
 
int getNumToCollate () const
 
void setNumToCollate (int numToCollate)
 
int getRangeUnchangedThreshold () const
 
void setRangeUnchangedThreshold (int threshold)
 
virtual void setUpBins () override
 
- Public Member Functions inherited from cIHistogramStrategy
 cIHistogramStrategy ()
 
 cIHistogramStrategy (const cIHistogramStrategy &other)
 
cIHistogramStrategyoperator= (const cIHistogramStrategy &other)
 
void setHistogram (cHistogram *hist)
 
cHistogramgetHistogram () const
 
- Public Member Functions inherited from cObject
 cObject ()
 
 cObject (const cObject &other)=default
 
virtual ~cObject ()
 
virtual const char * getClassName () const
 
virtual const char * getName () const
 
bool isName (const char *s) const
 
virtual const char * getFullName () const
 
virtual std::string getFullPath () const
 
virtual std::string getClassAndFullName () const
 
virtual std::string getClassAndFullPath () const
 
const cObjectgetThisPtr () const
 
virtual std::string str () const
 
virtual std::ostream & printOn (std::ostream &os) const
 
virtual void parsimPack (cCommBuffer *buffer) const
 
virtual void parsimUnpack (cCommBuffer *buffer)
 
virtual cObjectgetOwner () const
 
virtual bool isOwnedObject () const
 
virtual bool isSoftOwner () const
 
virtual void forEachChild (cVisitor *v)
 
cObjectfindObject (const char *name, bool deep=true)
 
virtual cClassDescriptorgetDescriptor () const
 
void copyNotSupported () const
 

Additional Inherited Members

- Protected Member Functions inherited from cObject
virtual void take (cOwnedObject *obj)
 
virtual void drop (cOwnedObject *obj)
 
void dropAndDelete (cOwnedObject *obj)
 

Member Function Documentation

◆ dup()

virtual cAutoRangeHistogramStrategy* dup ( ) const
inlineoverridevirtual

Should be redefined in subclasses to create an exact copy of this object. The default implementation just throws an error, to indicate that the method was not redefined.

Reimplemented from cObject.

◆ collect()

virtual void collect ( double  value)
overridevirtual

Called from cHistogram's collect() method. Implementations are expected to call back cHistogram's collectIntoHistogram(), or if histogram bins are not yet set up, store it for later.

Implements cIHistogramStrategy.

◆ collectWeighted()

virtual void collectWeighted ( double  value,
double  weight 
)
overridevirtual

Called from cHistogram's collectWeighted() method. Implementations are expected to call back cHistogram's collectIntoHistogram(), or if histogram bins are not yet set up, store it for later.

Implements cIHistogramStrategy.

◆ clear()

virtual void clear ( )
overridevirtual

Called from cHistogram's clear() method, to give the strategy object an opportunity to clear its state.

Reimplemented from cPrecollectionBasedHistogramStrategy.


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