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) 2021-2025 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 registered values that were above the range of this FixedBinsAccumulator.
    long
    getBelowCount()
    Retrieve the number of registered 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 registered values between -infinity up to and including a given quantile.
    long
    getN()
    Retrieve the total number of registered values.
    double
    getQuantile(Tally tally, double probability)
    Compute (or approximate) the value that corresponds to the given fraction (percentile).
    void
    initialize()
    Reset (clear all accumulated information).
    double
    register(double value)
    Ingest one value with weight 1.
    String
    toString()
     

    Methods inherited from class java.lang.Object

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

  • Constructor Details

    • FixedBinsAccumulator

      public FixedBinsAccumulator(double minimumBinCenter, double binWidth, int binCount)
      Construct a new FullStorageAccumulator.
      Parameters:
      minimumBinCenter - 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 - width of each bin
      binCount - number of bins

  • Method Details

    • getBinWidth

      public double getBinWidth()
      Retrieve the bin width.
      Returns:
      the bin width

    • getBinCount

      public int getBinCount()
      Retrieve the bin count.
      Returns:
      the bin count

    • getN

      public long getN()
      Retrieve the total number of registered values.
      Returns:
      the total number of registered values

    • getBelowCount

      public long getBelowCount()
      Retrieve the number of registered values that were below the range of this FixedBinsAccumulator.
      Returns:
      the number of registered values that were below the range of this FixedBinsAccumulator

    • getAboveCount

      public long getAboveCount()
      Retrieve the number of registered values that were above the range of this FixedBinsAccumulator.
      Returns:
      the number of registered 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:
      the center of requested bin

    • register

      public double register(double value)
      Description copied from interface: QuantileAccumulator
      Ingest one value with weight 1. Should be called only from the Tally object and AFTER processing the value in the tally.
      Specified by:
      register in interface QuantileAccumulator
      Parameters:
      value - the value
      Returns:
      the registered value

    • getQuantile

      public double getQuantile(Tally tally, double probability)
      Description copied from interface: QuantileAccumulator
      Compute (or approximate) the value that corresponds to the given fraction (percentile).
      Specified by:
      getQuantile in interface QuantileAccumulator
      Parameters:
      tally - the tally object that accumulates mean, minimum, maximum, count, etc.
      probability - value between 0.0 and 1.0 (both inclusive)
      Returns:
      the computed or approximated quantile value

    • getCumulativeProbability

      public double getCumulativeProbability(Tally tally, double quantile) throws IllegalArgumentException
      Description copied from interface: QuantileAccumulator
      Get, or estimate fraction of registered values between -infinity up to and including a given quantile.
      Specified by:
      getCumulativeProbability in interface QuantileAccumulator
      Parameters:
      tally - the tally object that accumulates mean, minimum, maximum, count, etc.
      quantile - the given quantile
      Returns:
      the estimated or observed fraction of registered values between -infinity up to and including the given quantile. When this QuantileAccumulator has registered zero values; this method shall return NaN.
      Throws:
      IllegalArgumentException - when quantile is NaN

    • initialize

      public void initialize()
      Description copied from interface: QuantileAccumulator
      Reset (clear all accumulated information).
      Specified by:
      initialize in interface QuantileAccumulator

    • toString

      public String toString()
      Overrides:
      toString in class Object