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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#include "MovingAverageRegressionCurveCalculator.hxx"
#include "RegressionCalculationHelper.hxx"
#include "ResId.hxx"
#include "Strings.hrc"
#include "macros.hxx"
#include <rtl/math.hxx>
#include <rtl/ustrbuf.hxx>
using namespace ::com::sun::star;
namespace chart
{
MovingAverageRegressionCurveCalculator::MovingAverageRegressionCurveCalculator()
{}
MovingAverageRegressionCurveCalculator::~MovingAverageRegressionCurveCalculator()
{}
// ____ XRegressionCurveCalculator ____
void SAL_CALL MovingAverageRegressionCurveCalculator::recalculateRegression(
const uno::Sequence< double >& aXValues,
const uno::Sequence< double >& aYValues )
throw (uno::RuntimeException, std::exception)
{
::rtl::math::setNan( & m_fCorrelationCoeffitient );
RegressionCalculationHelper::tDoubleVectorPair aValues(
RegressionCalculationHelper::cleanup(
aXValues, aYValues,
RegressionCalculationHelper::isValid()));
const size_t aSize = aValues.first.size();
aYList.clear();
aXList.clear();
for( size_t i = mPeriod - 1; i < aSize; ++i )
{
double yAvg;
yAvg = 0.0;
for (sal_Int32 j = 0; j < mPeriod; j++)
{
yAvg += aValues.second[i - j];
}
yAvg /= mPeriod;
double x = aValues.first[i];
aYList.push_back(yAvg);
aXList.push_back(x);
}
}
double SAL_CALL MovingAverageRegressionCurveCalculator::getCurveValue( double /*x*/ )
throw (lang::IllegalArgumentException,
uno::RuntimeException, std::exception)
{
double fResult;
rtl::math::setNan(&fResult);
return fResult;
}
uno::Sequence< geometry::RealPoint2D > SAL_CALL MovingAverageRegressionCurveCalculator::getCurveValues(
double /*min*/, double /*max*/, sal_Int32 /*nPointCount*/,
const uno::Reference< chart2::XScaling >& /*xScalingX*/,
const uno::Reference< chart2::XScaling >& /*xScalingY*/,
sal_Bool /*bMaySkipPointsInCalculation*/ )
throw (lang::IllegalArgumentException,
uno::RuntimeException, std::exception)
{
uno::Sequence< geometry::RealPoint2D > aResult( aYList.size() );
for( size_t i = 0; i < aYList.size(); ++i )
{
aResult[i].X = aXList[i];
aResult[i].Y = aYList[i];
}
return aResult;
}
OUString MovingAverageRegressionCurveCalculator::ImplGetRepresentation(
const uno::Reference< util::XNumberFormatter >& /*xNumFormatter*/,
::sal_Int32 /*nNumberFormatKey*/ ) const
{
OUStringBuffer aBuf( "f(x) = N/A");
aBuf = SCH_RESSTR( STR_OBJECT_MOVING_AVERAGE_WITH_PARAMETERS );
return aBuf.makeStringAndClear();
}
} // namespace chart
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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