Package org.djutils.stats.summarizers.quantileaccumulator

Class FixedBinsAccumulator

java.lang.Object

org.djutils.stats.summarizers.quantileaccumulator.FixedBinsAccumulator

All Implemented Interfaces:

QuantileAccumulator

public class FixedBinsAccumulator
extends Object
implements QuantileAccumulator

FixedBinsAccumulator.java.
This accumulator is created with a caller prescribes set of bins. All bins have the same width.
Copyright (c) 2021-2021 Delft University of Technology, Jaffalaan 5, 2628 BX Delft, the Netherlands. All rights reserved. See for project information https://djutils.org. The DJUTILS project is distributed under a three-clause BSD-style license, which can be found at https://djutils.org/docs/license.html.

Author:

Alexander Verbraeck, Peter Knoppers

Constructor Summary

Constructors

Constructor	Description
FixedBinsAccumulator(double minimumBinCenter, double binWidth, int binCount)	Construct a new FullStorageAccumulator.

Method Summary

Modifier and Type	Method	Description
long	getAboveCount()	Retrieve the number of ingested values that were above the range of this FixedBinsAccumulator.
long	getBelowCount()	Retrieve the number of ingested values that were below the range of this FixedBinsAccumulator.
double	getBinCenter(int bin)	Return the center of a particular bin.
int	getBinCount()	Retrieve the bin count.
double	getBinWidth()	Retrieve the bin width.
double	getCumulativeProbability(Tally tally, double quantile)	Get, or estimate fraction of ingested values between -infinity up to and including a given quantile.
long	getN()	Retrieve the total number of ingested values.
double	getQuantile(Tally tally, double probability)	Compute (or approximate) the value that corresponds to the given fraction (percentile).
double	ingest(double value)	Ingest one value with weight 1.
void	initialize()	Reset (clear all accumulated information).
String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

FixedBinsAccumulator

public FixedBinsAccumulator(double minimumBinCenter,
                            double binWidth,
                            int binCount)

Construct a new FullStorageAccumulator.

Parameters:

minimumBinCenter - double; center value of bin for minimum value of range (minimum value in range is minimumBinCenter - binWidth / 2, maximum value in range is minimumBinCenter + binWidth * (binCount - 0.5))

binWidth - double; width of each bin

binCount - int; number of bins

Method Detail

getBinWidth

public double getBinWidth()

Retrieve the bin width.

Returns:

double; the bin width

getBinCount

public int getBinCount()

Retrieve the bin count.

Returns:

int; the bin count

getN

public long getN()

Retrieve the total number of ingested values.

Returns:

long; the total number of ingested values

getBelowCount

public long getBelowCount()

Retrieve the number of ingested values that were below the range of this FixedBinsAccumulator.

Returns:

long; the number of ingested values that were below the range of this FixedBinsAccumulator

getAboveCount

public long getAboveCount()

Retrieve the number of ingested values that were above the range of this FixedBinsAccumulator.

Returns:

long; the number of ingested values that were above the range of this FixedBinsAccumulator

getBinCenter

public double getBinCenter(int bin)

Return the center of a particular bin.

Parameters:

bin - int the bin number

Returns:

double; the center of requested bin

ingest

public double ingest(double value)

Ingest one value with weight 1. Should be called only from the Tally object and AFTER processing the value in the tally.

Specified by:

ingest in interface QuantileAccumulator

Parameters:

value - double; the value

Returns:

double; the ingested value

getQuantile

public double getQuantile(Tally tally,
                          double probability)

Compute (or approximate) the value that corresponds to the given fraction (percentile).

Specified by:

getQuantile in interface QuantileAccumulator

Parameters:

tally - Tally; the tally object that accumulates mean, minimum, maximum, count, etc.

probability - double; value between 0.0 and 1.0 (both inclusive)

Returns:

double; the computed or approximated quantile value

getCumulativeProbability

public double getCumulativeProbability(Tally tally,
                                       double quantile)
                                throws IllegalArgumentException

Get, or estimate fraction of ingested values between -infinity up to and including a given quantile.

Specified by:

getCumulativeProbability in interface QuantileAccumulator

Parameters:

tally - Tally; the tally object that accumulates mean, minimum, maximum, count, etc.

quantile - double; the given quantile

Returns:

double; the estimated or observed fraction of ingested values between -infinity up to and including the given quantile. When this QuantileAccumulator has ingested zero values; this method shall return NaN.

Throws:

IllegalArgumentException - when quantile is NaN

initialize

public void initialize()

Reset (clear all accumulated information).

Specified by:

initialize in interface QuantileAccumulator

toString

public String toString()

Overrides:

toString in class Object