chart2/source/tools/MovingAverageRegressionCurveCalculator.cxx

   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
  20 #include <MovingAverageRegressionCurveCalculator.hxx>
  21 #include <RegressionCalculationHelper.hxx>
  22 #include <ResId.hxx>
  23 #include <strings.hrc>
  24
  25 #include <rtl/math.hxx>
  26
  27 using namespace ::com::sun::star;
  28
  29 namespace chart
  30 {
  31
  32 MovingAverageRegressionCurveCalculator::MovingAverageRegressionCurveCalculator()
  33 {}
  34
  35 MovingAverageRegressionCurveCalculator::~MovingAverageRegressionCurveCalculator()
  36 {}
  37
  38 // ____ XRegressionCurveCalculator ____
  39 void SAL_CALL MovingAverageRegressionCurveCalculator::recalculateRegression(
  40     const uno::Sequence< double >& aXValues,
  41     const uno::Sequence< double >& aYValues )
  42 {
  43     ::rtl::math::setNan( & m_fCorrelationCoefficient );
  44
  45     RegressionCalculationHelper::tDoubleVectorPair aValues(
  46         RegressionCalculationHelper::cleanup(
  47             aXValues, aYValues,
  48             RegressionCalculationHelper::isValid()));
  49
  50     const size_t aSize = aValues.first.size();
  51
  52     aYList.clear();
  53     aXList.clear();
  54
  55     for( size_t i = mPeriod - 1; i < aSize; ++i )
  56     {
  57         double yAvg;
  58         yAvg = 0.0;
  59
  60         for (sal_Int32 j = 0; j < mPeriod; j++)
  61         {
  62             yAvg += aValues.second[i - j];
  63         }
  64         yAvg /= mPeriod;
  65
  66         double x = aValues.first[i];
  67         aYList.push_back(yAvg);
  68         aXList.push_back(x);
  69     }
  70 }
  71
  72 double SAL_CALL MovingAverageRegressionCurveCalculator::getCurveValue( double /*x*/ )
  73 {
  74     double fResult;
  75     rtl::math::setNan(&fResult);
  76     return fResult;
  77 }
  78
  79 uno::Sequence< geometry::RealPoint2D > SAL_CALL MovingAverageRegressionCurveCalculator::getCurveValues(
  80     double /*min*/, double /*max*/, sal_Int32 /*nPointCount*/,
  81     const uno::Reference< chart2::XScaling >& /*xScalingX*/,
  82     const uno::Reference< chart2::XScaling >& /*xScalingY*/,
  83     sal_Bool /*bMaySkipPointsInCalculation*/ )
  84 {
  85     uno::Sequence< geometry::RealPoint2D > aResult( aYList.size() );
  86
  87     for( size_t i = 0; i < aYList.size(); ++i )
  88     {
  89         aResult[i].X = aXList[i];
  90         aResult[i].Y = aYList[i];
  91     }
  92     return aResult;
  93 }
  94
  95 OUString MovingAverageRegressionCurveCalculator::ImplGetRepresentation(
  96     const uno::Reference< util::XNumberFormatter >& /*xNumFormatter*/,
  97     sal_Int32 /*nNumberFormatKey*/, sal_Int32* /*pFormulaLength = nullptr */ ) const
  98 {
  99     return SchResId( STR_OBJECT_MOVING_AVERAGE_WITH_PARAMETERS );
 100 }
 101
 102 } //  namespace chart
 103
 104 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */