StatCumProbDistDynCalc.h

Go to the documentation of this file.

#ifndef StatCumProbDistDynCalc_h
#define StatCumProbDistDynCalc_h

#include <QList>
#include <QObject>
#include <QVector>

#include "XmlStackedHandler.h"

class QDataStream;
class QUuid;
class QXmlStreamWriter;

namespace Isis {
  class Project;// ??? does xml stuff need project???
  class XmlStackedHandlerReader;

  class StatCumProbDistDynCalc : public QObject {
    Q_OBJECT
    // class uses the P^2 Algorithim to calculate equiprobability cell histograms from a stream of 
    // data without storing the data 
    //  see "The p^2 Algorithim for Dynamic Calculations of Quantiles and Histograms Without Storing
    //  Observations"
    public:
      StatCumProbDistDynCalc(unsigned int nodes=20, QObject *parent = 0);  //individual qunatile value to be calculated
      StatCumProbDistDynCalc(Project *project, XmlStackedHandlerReader *xmlReader, 
                             QObject *parent = 0);   // TODO: does xml stuff need project???
      StatCumProbDistDynCalc(const StatCumProbDistDynCalc &other);
      ~StatCumProbDistDynCalc();
      StatCumProbDistDynCalc &operator=(const StatCumProbDistDynCalc &other);
    
      void initialize(); // clears the member lists and initializes the rest of the member data to 0 
      void setQuantiles(unsigned int nodes); // initializes/resets the class to start new calculation

      void validate();
      void addObs(double obs);
    
      double cumProb(double value); //given a value return the cumulative probility
      double value(double cumProb); //given a cumulative probibility return a value
      double max(); //return the largest value so far
      double min(); //return the smallest values so far
    
      void save(QXmlStreamWriter &stream, const Project *project) const;   // TODO: does xml stuff need project???
    
      QDataStream &write(QDataStream &stream) const;
      QDataStream &read(QDataStream &stream);

    private:
      class XmlHandler : public XmlStackedHandler {
        public:
          XmlHandler(StatCumProbDistDynCalc *probabilityCalc, Project *project);   // TODO: does xml stuff need project???
          ~XmlHandler();
   
          virtual bool startElement(const QString &namespaceURI, const QString &localName,
                                    const QString &qName, const QXmlAttributes &atts);
          virtual bool characters(const QString &ch);
          virtual bool endElement(const QString &namespaceURI, const QString &localName,
                                    const QString &qName);
   
        private:
          Q_DISABLE_COPY(XmlHandler);
   
          StatCumProbDistDynCalc *m_xmlHandlerCumProbCalc;
          Project *m_xmlHandlerProject;   // TODO: does xml stuff need project???
          QString m_xmlHandlerCharacters;
      };

      unsigned int m_numberCells; 
      unsigned int m_numberQuantiles; 
      unsigned int m_numberObservations; 
      QList<double> m_quantiles; 
      QList<double> m_observationValues; 
      QList<double> m_idealNumObsBelowQuantile; 
      QList<int> m_numObsBelowQuantile; 
  };

  // operators to read/write StatCumProbDistDynCalc to/from binary data
  QDataStream &operator<<(QDataStream &stream, const StatCumProbDistDynCalc &scpddc);
  QDataStream &operator>>(QDataStream &stream, StatCumProbDistDynCalc &scpddc);

} //end namespace Isis

#endif