#ifndef REALSPARSEHIST1D_HEADER
#define REALSPARSEHIST1D_HEADER 1
////////////////////////////////////////////////////
//! rcsid="$Id: RealSparHist1d.hh,v 1.5 2000/07/07 12:57:03 ees1cg Exp $"
//! file="amma/Statist/SparHist/RealSparHist1d.hh"
//! lib=SparHist
//! docentry="Statistics.Histograms"
//! author="Charles Galambos"
//! date="10/05/99"

#include "amma/StdType.hh"
#include "amma/RealBinTable1d.hh"
#include "amma/IntC.hh"
#include "amma/MeanCo1d.hh"

class RealSparseHist1dIterC;

////////////////////////////////
//! userlevel=Normal
//: Sparse 1d histogram.

class RealSparseHist1dC 
  : public RealBinTable1dC<IntC>
{
public:
  RealSparseHist1dC(RealT binsize = 1)
    : RealBinTable1dC<IntC>(binsize)
  {}
  //: Default Constructor.  
  
  RealSparseHist1dC  Copy() const
    { return RealSparseHist1dC(RealBinTable1dC<IntC>::Copy()); }
  //: Make a copy of the table.
  
  IntT Vote(RealT bin) 
    { return ++RealBinTable1dC<IntC>::operator[](bin); }
  //: Increment bin in accumulator.

  IntT Unvote(RealT bin) 
    { return --RealBinTable1dC<IntC>::operator[](bin); }
  //: Decrement bin in accumulator.
  
  RealT N() const;
  //: Total number of votes.
  
  RealT Mean() const;
  //: Calculate mean of histogram.
  
  RealT Variance() const;
  //: Calculate variance of histogram.

  MeanCovariance1dC MeanCo() const;
  //: Calculate mean and co-variance for histogram.

  BooleanT WriteTable(ostream &out) const;
  //: Write sorted table of results.
  // the table will be key, count, sorted on key.
  // this will return false if out stream in bad.
  // if the table is empty and 0 0 will be written.
  
protected:
  RealSparseHist1dC(const RealBinTable1dC<IntC> &dat)
    : RealBinTable1dC<IntC>(dat)
  {}
  //: Constructor.  
  
  void Dummy();
  // Dummy func to help compiler.
};

ostream &operator<<(ostream &out,const RealSparseHist1dC &rhist);
//: Out histogram to stream.

////////////////////////////////
//! userlevel=Normal
//: Sparse 1d histogram iterator.

class RealSparseHist1dIterC 
  : public RealBinTable1dIterC<IntC>
{
public:
  RealSparseHist1dIterC(RealSparseHist1dC  &hist)
    : RealBinTable1dIterC<IntC>(hist)
  {}
  //: Constructor.  

protected:
  void Dummy();
  //: Dummy function to put in library
};


#endif