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77 lines
2.5 KiB
C++
77 lines
2.5 KiB
C++
/*
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* TabFunction.hpp, part of LatAnalyze 3
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*
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* Copyright (C) 2013 - 2015 Antonin Portelli
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*
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* LatAnalyze 3 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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* LatAnalyze 3 is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with LatAnalyze 3. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef Latan_TabFunction_hpp_
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#define Latan_TabFunction_hpp_
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#include <algorithm>
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#include <map>
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#include <LatAnalyze/Global.hpp>
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#include <LatAnalyze/Function.hpp>
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#include <LatAnalyze/Math.hpp>
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#include <LatAnalyze/XYStatData.hpp>
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BEGIN_LATAN_NAMESPACE
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/******************************************************************************
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* tabulated function: 1D only *
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******************************************************************************/
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enum class InterpType
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{
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NEAREST,
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LINEAR,
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QUADRATIC
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};
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class TabFunction: public DoubleFunctionFactory
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{
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public:
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// constructors
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TabFunction(void) = default;
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TabFunction(const DVec &x, const DVec &y,
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const InterpType interpType = InterpType::LINEAR);
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TabFunction(const XYStatData &data, const Index i = 0, const Index j = 0,
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const InterpType interpType = InterpType::LINEAR);
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// destructor
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virtual ~TabFunction(void) = default;
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// access
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void setData(const DVec &x, const DVec &y);
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void setData(const XYStatData &data, const Index i = 0, const Index j = 0);
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// function call
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double operator()(const double *arg) const;
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// factory
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virtual DoubleFunction makeFunction(const bool makeHardCopy = true) const;
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private:
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std::map<double, double>::const_iterator nearest(const double x) const;
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std::map<double, double> value_;
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InterpType interpType_;
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};
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DoubleFunction interpolate(const DVec &x, const DVec &y,
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const InterpType interpType = InterpType::LINEAR);
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DoubleFunction interpolate(const XYStatData &data, const Index i = 0,
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const Index j = 0,
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const InterpType interpType = InterpType::LINEAR);
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END_LATAN_NAMESPACE
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#endif // Latan_TabFunction_hpp_
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