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74 lines
2.7 KiB
C++
74 lines
2.7 KiB
C++
/////////////////////////////////////////////////////////////////////////////////
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//
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// Copyright (C) 2018- Equinor ASA
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//
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// ResInsight is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// ResInsight is distributed in the hope that it will be useful, but WITHOUT ANY
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// WARRANTY; without even the implied warranty of MERCHANTABILITY or
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// FITNESS FOR A PARTICULAR PURPOSE.
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//
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// See the GNU General Public License at <http://www.gnu.org/licenses/gpl.html>
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// for more details.
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//
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/////////////////////////////////////////////////////////////////////////////////
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#include "RiaWeightedGeometricMeanCalculator.h"
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#include "cvfAssert.h"
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#include <cmath>
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//--------------------------------------------------------------------------------------------------
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///
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//--------------------------------------------------------------------------------------------------
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RiaWeightedGeometricMeanCalculator::RiaWeightedGeometricMeanCalculator()
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: m_aggregatedWeightedValue( 0.0 )
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, m_aggregatedWeight( 0.0 )
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{
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}
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//--------------------------------------------------------------------------------------------------
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///
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//--------------------------------------------------------------------------------------------------
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void RiaWeightedGeometricMeanCalculator::addValueAndWeight( double value, double weight )
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{
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CVF_ASSERT( weight >= 0.0 );
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// This can be a very big number, consider other algorithms if that becomes a problem
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m_aggregatedWeightedValue += ( std::log( value ) * weight );
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m_aggregatedWeight += weight;
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}
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//--------------------------------------------------------------------------------------------------
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///
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//--------------------------------------------------------------------------------------------------
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double RiaWeightedGeometricMeanCalculator::weightedMean() const
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{
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if ( m_aggregatedWeight > 1e-7 )
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{
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return std::exp( m_aggregatedWeightedValue / m_aggregatedWeight );
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}
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return 0.0;
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}
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//--------------------------------------------------------------------------------------------------
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///
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//--------------------------------------------------------------------------------------------------
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double RiaWeightedGeometricMeanCalculator::aggregatedWeight() const
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{
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return m_aggregatedWeight;
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}
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//--------------------------------------------------------------------------------------------------
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///
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//--------------------------------------------------------------------------------------------------
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bool RiaWeightedGeometricMeanCalculator::validAggregatedWeight() const
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{
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return m_aggregatedWeight > 1.0e-12;
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}
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