PUBLIC

RealHistogram2dC::RealHistogram2dC(const Point2dC &,const Point2dC &,const Point2dC &) RealHistogram2dC::RealHistogram2dC(const RealHistogram2dC &) RealHistogram2dC::StartPoint(const Index2dC &) const RealHistogram2dC::MidPoint(const Index2dC &) const RealHistogram2dC::Vote(const Point2dC &) RealHistogram2dC::CheckedVote(const Point2dC &) RealHistogram2dC::ZeroVote(const Point2dC &) RealHistogram2dC::UnVote(const Point2dC &) RealHistogram2dC::Empty(void) RealHistogram2dC::NearestPeak(Point2dC &,RealT) RealHistogram2dC::ListPeaks(IntT)

RealHistogram2dC
2 dimensional histogram with real index
include	"amma/ReHist2d.hh"
User Level:	Default
Library:	Mstat
Example:	exBnd.cc
Section:	Statistics.Histograms
In Scope:	std

Comments:
The class RealHistogram2dC represents a histogram of 2D points. It is possible set up its resolution, eg. the size of bins. The histogram works on the interval Parent Classes:

private IntArray2dC

RealHistogram2dC(const Point2dC & minPoint,const Point2dC & maxPoint,const Point2dC & resolution)

Creates a histogram with all bins initialized to be zero. The histogram is prepared to accept values in the rectangle

RealHistogram2dC(const RealHistogram2dC & vv)

Another access to the histogram 'vv'. Access to the object. ---------------------

Point2dC StartPoint(const Index2dC & i) const

Returns the point of the beginning of the bin with the index 'i'.

Point2dC MidPoint(const Index2dC & i) const

Returns the point of the center of the bin with the index 'i'. Updating of histogram. ----------------------

IntT Vote(const Point2dC & p)

Updates the histogram by adding another point 'p'. The point must be inside the rectangle

IntT CheckedVote(const Point2dC & p)

Upddates the histogram by adding another point 'p'. The points outside the rectangle are ignored. Return: Number of votes in bin after update, this will be zero if vote is outside the accumulator.

void ZeroVote(const Point2dC & p)

Set bin to zero at given point.

void UnVote(const Point2dC & p)

Reduce count for bin by one.

void Empty()

Set contents to zero.

BooleanT NearestPeak(Point2dC & at,RealT maxdist)

Go up slope to the nearest peak, as long as its withing distance, maxdist Returns TRUE if peak found, false otherwise. FIXME :- UNTESTED !

DListC<Point2dC> ListPeaks(IntT threshold = 0)

List all peaks in histogram above threshold. A peak is a bin with a higher count than all the surrounding bins, (8 Connected). FIXME :- UNTESTED !