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/**
* @file Histogram.hxx
* @brief The Histogram distribution
*
* Copyright 2005-2015 Airbus-EDF-IMACS-Phimeca
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*
* @author schueller
* @date 2012-02-17 19:35:43 +0100 (Fri, 17 Feb 2012)
*/
#ifndef OPENTURNS_HISTOGRAM_HXX
#define OPENTURNS_HISTOGRAM_HXX
#include "OTprivate.hxx"
#include "ContinuousDistribution.hxx"
#include "Collection.hxx"
#include "HistogramPair.hxx"
#include "PersistentCollection.hxx"
#include "PersistentObject.hxx"
BEGIN_NAMESPACE_OPENTURNS
/**
* @class Histogram
*
* The Histogram distribution.
*/
class OT_API Histogram
: public ContinuousDistribution
{
CLASSNAME;
public:
typedef Collection<HistogramPair> HistogramPairCollection;
typedef PersistentCollection<HistogramPair> HistogramPairPersistentCollection;
/** Default constructor */
Histogram();
/** Parameters constructor */
Histogram(const NumericalScalar first,
const HistogramPairCollection & collection);
Histogram(const NumericalScalar first,
const NumericalPoint & width,
const NumericalPoint & height);
/** Comparison operator */
Bool operator ==(const Histogram & other) const;
/** String converter */
String __repr__() const;
String __str__(const String & offset = "") const;
/* Interface inherited from Distribution */
/** Virtual constructor */
virtual Histogram * clone() const;
/** Get one realization of the Histogram distribution */
NumericalPoint getRealization() const;
/** Get the DDF of the Histogram distribution */
using ContinuousDistribution::computeDDF;
NumericalPoint computeDDF(const NumericalPoint & point) const;
/** Get the PDF of the Histogram distribution */
using ContinuousDistribution::computePDF;
NumericalScalar computePDF(const NumericalPoint & point) const;
/** Get the CDF of the Histogram distribution */
using ContinuousDistribution::computeCDF;
NumericalScalar computeCDF(const NumericalPoint & point) const;
/** Get the characteristic function of the distribution, i.e. phi(u) = E(exp(I*u*X)) */
NumericalComplex computeCharacteristicFunction(const NumericalScalar x) const;
/** Get the PDFGradient of the Histogram distribution */
using ContinuousDistribution::computePDFGradient;
NumericalPoint computePDFGradient(const NumericalPoint & point) const;
/** Get the CDFGradient of the Histogram distribution */
using ContinuousDistribution::computeCDFGradient;
NumericalPoint computeCDFGradient(const NumericalPoint & point) const;
/** Get the raw moments of the standardized distribution */
NumericalPoint getStandardMoment(const UnsignedInteger n) const;
/** Get the standard representative in the parametric family, associated with the standard moments */
Implementation getStandardRepresentative() const;
/** Parameters value and description accessor */
NumericalPointWithDescriptionCollection getParametersCollection() const;
/* Interface specific to Histogram */
/** First point accessor */
void setFirst(const NumericalScalar first);
NumericalScalar getFirst() const;
/** Collection accessor */
void setPairCollection(const HistogramPairCollection & collection);
HistogramPairCollection getPairCollection() const;
/** Draw the PDF of the Histogram using a specific presentation */
// using ContinuousDistribution::drawPDF;
virtual Graph drawPDF() const;
/** Draw the PDF of the Histogram using a specific presentation */
virtual Graph drawPDF(const NumericalScalar xMin,
const NumericalScalar xMax,
const UnsignedInteger pointNumber = ResourceMap::GetAsUnsignedInteger("DistributionImplementation-DefaultPointNumber")) const;
/** Method save() stores the object through the StorageManager */
void save(Advocate & adv) const;
/** Method load() reloads the object from the StorageManager */
void load(Advocate & adv);
protected:
private:
/** Compute the mean of the distribution */
void computeMean() const;
/** Compute the covariance of the distribution */
void computeCovariance() const;
/** Get the quantile of the Histogram distribution */
NumericalScalar computeScalarQuantile(const NumericalScalar prob,
const Bool tail = false) const;
/** Compute the numerical range of the distribution given the parameters values */
void computeRange();
/** The first point of the collection */
NumericalScalar first_;
/** The collection of pair describing the distribution */
HistogramPairPersistentCollection collection_;
/** The cumulated bin widths */
NumericalPoint cumulatedWidth_;
/** The cumulated bin surface */
NumericalPoint cumulatedSurface_;
}; /* class Histogram */
END_NAMESPACE_OPENTURNS
#endif /* OPENTURNS_HISTOGRAM_HXX */
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