PolynomialRegressionCurveCalculator.hxx

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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#pragma once
 
#include "RegressionCurveCalculator.hxx"
#include <vector>
 
namespace RegressionCalculationHelper
{
    typedef std::pair< std::vector< double >, std::vector< double > > tDoubleVectorPair;
}
 
namespace chart
{
 
class PolynomialRegressionCurveCalculator : public RegressionCurveCalculator
{
public:
    PolynomialRegressionCurveCalculator();
    virtual ~PolynomialRegressionCurveCalculator() override;
 
protected:
    virtual OUString ImplGetRepresentation(
        const css::uno::Reference<css::util::XNumberFormatter>& xNumFormatter,
        sal_Int32 nNumberFormatKey, sal_Int32* pFormulaMaxWidth = nullptr ) const override;
 
    virtual double SAL_CALL getCurveValue( double x ) override;
 
private:
    // ____ XRegressionCurveCalculator ____
    virtual void SAL_CALL recalculateRegression(
        const css::uno::Sequence<double>& aXValues,
        const css::uno::Sequence<double>& aYValues ) override;
 
    void computeCorrelationCoefficient(
        RegressionCalculationHelper::tDoubleVectorPair& rValues,
        const sal_Int32 aNoValues,
        double yAverage );
 
    std::vector<double> mCoefficients;
};
 
} //  namespace chart
 
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