Package adams.data.statistics

Class ArrayHistogram<T extends Number>

  • Type Parameters:
    T - the data to process
    All Implemented Interfaces:
    AdditionalInformationHandler, Destroyable, GlobalInfoSupporter, LoggingLevelHandler, LoggingSupporter, OptionHandler, ShallowCopySupporter<AbstractArrayStatistic>, SizeOfHandler, TechnicalInformationHandler, EqualLengthArrayStatistic, Serializable
    public class ArrayHistogram<T extends Number>
extends AbstractArrayStatistic<T>
implements EqualLengthArrayStatistic, TechnicalInformationHandler
    Generates a histogram from the given array.
    The formulas for the various width/#bin calculations can be found here:
    WikiPedia (2010). Histogram. 

     @misc{WikiPedia2010,
    author = {WikiPedia},
    title = {Histogram},
    year = {2010},
    HTTP = {http://en.wikipedia.org/wiki/Histogram}
 }
 


    -logging-level <OFF|SEVERE|WARNING|INFO|CONFIG|FINE|FINER|FINEST> (property: loggingLevel)
    The logging level for outputting errors and debugging output.
    default: WARNING
 
    -bin-calc <MANUAL|FREQUENCY|DENSITY|STURGES|SCOTT|SQRT> (property: binCalculation)
    Defines how the number of bins are calculated.
    default: MANUAL
 
    -num-bins <int> (property: numBins)
    The number of bins to use in case of manual bin calculation.
    default: 50
    minimum: 1
 
    -bin-width <double> (property: binWidth)
    The bin width to use for some of the calculations.
    default: 1.0
    minimum: 1.0E-5
 
    -normalize <boolean> (property: normalize)
    If set to true the data gets normalized first before the histogram is calculated.
    default: false
 
    -use-fixed-min-max <boolean> (property: useFixedMinMax)
    If enabled, then the user-specified min/max values are used for the bin 
    calculation rather than the min/max from the data (allows comparison of 
    histograms when generating histograms over a range of arrays).
    default: false
 
    -manual-min <double> (property: manualMin)
    The minimum to use when using manual binning with user-supplied min/max 
    enabled.
    default: 0.0
 
    -manual-max <double> (property: manualMax)
    The maximum to use when using manual binning with user-supplied max/max 
    enabled.
    default: 1.0
 
    -display-ranges <boolean> (property: displayRanges)
    If enabled, the bins get description according to their range, rather than 
    a simple index.
    default: false
 
    -num-decimals <int> (property: numDecimals)
    The number of decimals to show in the bin descriptions.
    default: 3
    minimum: 0
    Version:
    $Revision$
    Author:
    fracpete (fracpete at waikato dot ac dot nz)
    See Also:
    Serialized Form

    • Field Detail

      • METADATA_NUMBINS

        public static final String METADATA_NUMBINS
        the key for the number of bins in the meta-data.
        See Also:
        Constant Field Values

      • METADATA_BINWIDTH

        public static final String METADATA_BINWIDTH
        the key for the bin width in the meta-data.
        See Also:
        Constant Field Values

      • METADATA_BINX

        public static final String METADATA_BINX
        the key for the x-values for all the bins in the meta-data.
        See Also:
        Constant Field Values

      • METADATA_MINIMUM

        public static final String METADATA_MINIMUM
        the key for the minimum used in the meta-data.
        See Also:
        Constant Field Values

      • METADATA_MAXIMUM

        public static final String METADATA_MAXIMUM
        the key for the maximum used in the meta-data.
        See Also:
        Constant Field Values

      • m_NumBins

        protected int m_NumBins
        the number of bins in case of manual bin calculation.

      • m_BinWidth

        protected double m_BinWidth
        the bin width - used for some calculations.

      • m_Normalize

        protected boolean m_Normalize
        whether to normalize the data.

      • m_UseFixedMinMax

        protected boolean m_UseFixedMinMax
        whether to use fixed min/max for manual bin calculation.

      • m_ManualMin

        protected double m_ManualMin
        the manual minimum.

      • m_ManualMax

        protected double m_ManualMax
        the manual maximum.

      • m_DisplayRanges

        protected boolean m_DisplayRanges
        whether to use the ranges as bin description.

      • m_NumDecimals

        protected int m_NumDecimals
        the number of decimals to show.

    • Constructor Detail

      • ArrayHistogram

        public ArrayHistogram()

    • Method Detail

      • getTechnicalInformation

        public TechnicalInformation getTechnicalInformation()
        Returns an instance of a TechnicalInformation object, containing detailed information about the technical background of this class, e.g., paper reference or book this class is based on.
        Specified by:
        getTechnicalInformation in interface TechnicalInformationHandler
        Returns:
        the technical information about this class

      • setBinCalculation

        public void setBinCalculation​(ArrayHistogram.BinCalculation value)
        Sets how the number of bins is calculated.
        Parameters:
        value - the bin calculation

      • getBinCalculation

        public ArrayHistogram.BinCalculation getBinCalculation()
        Returns how the number of bins is calculated.
        Returns:
        the bin calculation

      • binCalculationTipText

        public String binCalculationTipText()
        Returns the tip text for this property.
        Returns:
        tip text for this property suitable for displaying in the GUI or for listing the options.

      • setNumBins

        public void setNumBins​(int value)
        Sets the number of bins to use in manual calculation.
        Parameters:
        value - the number of bins

      • getNumBins

        public int getNumBins()
        Returns the number of bins to use in manual calculation.
        Returns:
        the number of bins

      • numBinsTipText

        public String numBinsTipText()
        Returns the tip text for this property.
        Returns:
        tip text for this property suitable for displaying in the GUI or for listing the options.

      • setBinWidth

        public void setBinWidth​(double value)
        Sets the bin width to use (for some calculations).
        Parameters:
        value - the bin width

      • getBinWidth

        public double getBinWidth()
        Returns the bin width in use (for some calculations).
        Returns:
        the bin width

      • binWidthTipText

        public String binWidthTipText()
        Returns the tip text for this property.
        Returns:
        tip text for this property suitable for displaying in the GUI or for listing the options.

      • setNormalize

        public void setNormalize​(boolean value)
        Sets whether to normalize the data before generating the histogram.
        Parameters:
        value - if true the data gets normalized first

      • getNormalize

        public boolean getNormalize()
        Returns whether to normalize the data before generating the histogram.
        Returns:
        true if the data gets normalized first

      • normalizeTipText

        public String normalizeTipText()
        Returns the tip text for this property.
        Returns:
        tip text for this property suitable for displaying in the GUI or for listing the options.

      • setUseFixedMinMax

        public void setUseFixedMinMax​(boolean value)
        Sets whether to use user-supplied min/max for bin calculation rather than obtain min/max from data.
        Parameters:
        value - true if to use user-supplied min/max

      • getUseFixedMinMax

        public boolean getUseFixedMinMax()
        Returns whether to use user-supplied min/max for bin calculation rather than obtain min/max from data.
        Returns:
        true if to use user-supplied min/max

      • useFixedMinMaxTipText

        public String useFixedMinMaxTipText()
        Returns the tip text for this property.
        Returns:
        tip text for this property suitable for displaying in the GUI or for listing the options.

      • setManualMin

        public void setManualMin​(double value)
        Sets the minimum to use when using manual binning with user-supplied min/max enabled.
        Parameters:
        value - the minimum

      • getManualMin

        public double getManualMin()
        Returns the minimum to use when using manual binning with user-supplied min/max enabled.
        Returns:
        the minimum

      • manualMinTipText

        public String manualMinTipText()
        Returns the tip text for this property.
        Returns:
        tip text for this property suitable for displaying in the GUI or for listing the options.

      • setManualMax

        public void setManualMax​(double value)
        Sets the maximum to use when using manual binning with user-supplied max/max enabled.
        Parameters:
        value - the maximum

      • getManualMax

        public double getManualMax()
        Returns the maximum to use when using manual binning with user-supplied max/max enabled.
        Returns:
        the maximum

      • manualMaxTipText

        public String manualMaxTipText()
        Returns the tip text for this property.
        Returns:
        tip text for this property suitable for displaying in the GUI or for listing the options.

      • setDisplayRanges

        public void setDisplayRanges​(boolean value)
        Sets whether to use the bin ranges as their description rather than a simple index.
        Parameters:
        value - true if to display the ranges

      • getDisplayRanges

        public boolean getDisplayRanges()
        Returns whether to use the bin ranges as their description rather than a simple index.
        Returns:
        true if to display the ranges

      • displayRangesTipText

        public String displayRangesTipText()
        Returns the tip text for this property.
        Returns:
        tip text for this property suitable for displaying in the GUI or for listing the options.

      • setNumDecimals

        public void setNumDecimals​(int value)
        Sets the number of decimals to show in the bin description.
        Parameters:
        value - the number of decimals

      • getNumDecimals

        public int getNumDecimals()
        Returns the number of decimals to show in the bin description.
        Returns:
        the number of decimals

      • numDecimalsTipText

        public String numDecimalsTipText()
        Returns the tip text for this property.
        Returns:
        tip text for this property suitable for displaying in the GUI or for listing the options.

      • getLength

        public int getLength()
        Returns the length of the stored arrays.
        Specified by:
        getLength in interface EqualLengthArrayStatistic
        Returns:
        the length of the arrays, -1 if none stored

      • getMin

        public int getMin()
        Returns the minimum number of arrays that need to be present. -1 for unbounded.
        Specified by:
        getMin in class AbstractArrayStatistic<T extends Number>
        Returns:
        the minimum number, -1 for unbounded

      • getMax

        public int getMax()
        Returns the maximum number of arrays that need to be present. -1 for unbounded.
        Specified by:
        getMax in class AbstractArrayStatistic<T extends Number>
        Returns:
        the maximum number, -1 for unbounded

      • calcBinWidth

        protected double calcBinWidth​(Number[] array)
        Calculates the bin width to use.

        Formulas taken from here:
        Parameters:
        array - the array to work on
        Returns:
        the width of the bins, -1 if not necessary

      • calcNumBins

        protected int calcNumBins​(Number[] array,
                          double width)
        Calculates the number of bins to use.

        Formulas taken from here:
        Parameters:
        array - the array to work on
        width - the width of the bins
        Returns:
        the number of bins to use

      • calcBinStarts

        protected double[] calcBinStarts​(Number[] array,
                                 double width,
                                 int numBins,
                                 double min,
                                 double max)
        Calculates the starting values for the bins.
        Parameters:
        array - the array to work on
        width - the width of the bins
        numBins - the number of bins to use
        min - the minimum value
        max - the maximum value
        Returns:
        the starting values of the bins (+ one after)