chart2/source/inc/PolynomialRegressionCurveCalculator.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19 #pragma once
  20
  21 #include "RegressionCurveCalculator.hxx"
  22 #include <vector>
  23
  24 namespace RegressionCalculationHelper
  25 {
  26     typedef std::pair< std::vector< double >, std::vector< double > > tDoubleVectorPair;
  27 }
  28
  29 namespace chart
  30 {
  31
  32 class PolynomialRegressionCurveCalculator : public RegressionCurveCalculator
  33 {
  34 public:
  35     PolynomialRegressionCurveCalculator();
  36     virtual ~PolynomialRegressionCurveCalculator() override;
  37
  38 protected:
  39     virtual OUString ImplGetRepresentation(
  40         const css::uno::Reference<css::util::XNumberFormatter>& xNumFormatter,
  41         sal_Int32 nNumberFormatKey, sal_Int32* pFormulaMaxWidth = nullptr ) const override;
  42
  43     virtual double SAL_CALL getCurveValue( double x ) override;
  44
  45 private:
  46     // ____ XRegressionCurveCalculator ____
  47     virtual void SAL_CALL recalculateRegression(
  48         const css::uno::Sequence<double>& aXValues,
  49         const css::uno::Sequence<double>& aYValues ) override;
  50
  51     void computeCorrelationCoefficient(
  52         RegressionCalculationHelper::tDoubleVectorPair& rValues,
  53         const sal_Int32 aNoValues,
  54         double yAverage );
  55
  56     std::vector<double> mCoefficients;
  57 };
  58
  59 } //  namespace chart
  60
  61 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */