1 | //#---------------------------------------------------------------------------
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2 | //# Fitter.h: A Fitter class for spectra
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3 | //#---------------------------------------------------------------------------
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4 | //# Copyright (C) 2004
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5 | //# ATNF
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6 | //#
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7 | //# This program is free software; you can redistribute it and/or modify it
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8 | //# under the terms of the GNU General Public License as published by the Free
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9 | //# Software Foundation; either version 2 of the License, or (at your option)
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10 | //# any later version.
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11 | //#
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12 | //# This program is distributed in the hope that it will be useful, but
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13 | //# WITHOUT ANY WARRANTY; without even the implied warranty of
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14 | //# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
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15 | //# Public License for more details.
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16 | //#
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17 | //# You should have received a copy of the GNU General Public License along
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18 | //# with this program; if not, write to the Free Software Foundation, Inc.,
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19 | //# 675 Massachusetts Ave, Cambridge, MA 02139, USA.
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20 | //#
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21 | //# Correspondence concerning this software should be addressed as follows:
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22 | //# Internet email: Malte.Marquarding@csiro.au
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23 | //# Postal address: Malte Marquarding,
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24 | //# Australia Telescope National Facility,
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25 | //# P.O. Box 76,
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26 | //# Epping, NSW, 2121,
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27 | //# AUSTRALIA
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28 | //#
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29 | //# $Id: STFitter.h 2666 2012-10-15 04:52:38Z MalteMarquarding $
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30 | //#---------------------------------------------------------------------------
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31 | #ifndef STFITTER_H
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32 | #define STFITTER_H
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33 |
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34 | #include <string>
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35 | #include <vector>
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36 |
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37 | #include <casa/Arrays/Vector.h>
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38 | #include <casa/Containers/Block.h>
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39 | #include <scimath/Functionals/Function.h>
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40 | #include <scimath/Functionals/CompoundFunction.h>
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41 | #include <scimath/Fitting/GenericL2Fit.h>
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42 |
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43 |
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44 | #include "STFitEntry.h"
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45 |
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46 |
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47 | namespace asap {
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48 |
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49 | class Fitter {
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50 | public:
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51 | Fitter();
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52 | virtual ~Fitter();
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53 | // allowed "gauss" and "poly". ncomp is either numvber of gaussions
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54 | // or order of the polynomial
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55 | bool setExpression(const std::string& expr, int ncomp=1);
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56 | bool setData(std::vector<float> absc, std::vector<float> spec,
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57 | std::vector<bool> mask);
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58 | bool setParameters(std::vector<float> params);
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59 | bool setFixedParameters(std::vector<bool> fixed);
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60 | void addConstraint(const std::vector<float>& constraint);
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61 |
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62 | std::vector<float> getResidual() const;
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63 | std::vector<float> getFit() const;
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64 | std::vector<float> getParameters() const;
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65 | std::vector<bool> getFixedParameters() const;
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66 |
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67 | std::vector<float> getEstimate() const;
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68 | std::vector<float> getErrors() const;
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69 | float getChisquared() const;
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70 | void reset();
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71 | bool fit();
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72 | // Fit via linear method
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73 | bool lfit();
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74 | bool computeEstimate();
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75 |
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76 | std::vector<float> evaluate(int whichComp) const;
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77 |
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78 | STFitEntry getFitEntry() const;
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79 |
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80 | private:
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81 | void clear();
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82 | void applyConstraints(casa::GenericL2Fit<casa::Float>& fitter);
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83 | casa::Vector<casa::Float> x_;
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84 | casa::Vector<casa::Float> y_;
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85 | casa::Vector<casa::Bool> m_;
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86 | casa::PtrBlock<casa::Function<casa::Float>* > funcs_;
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87 | std::vector<std::string> funcnames_;
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88 | std::vector<int> funccomponents_;
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89 |
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90 | //Bool estimateSet_;
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91 | casa::Float chisquared_;
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92 | casa::Vector<casa::Float> parameters_;
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93 | casa::Vector<casa::Bool> fixedpar_;
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94 | std::vector<std::vector<float> > constraints_;
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95 |
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96 | casa::Vector<casa::Float> error_;
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97 | casa::Vector<casa::Float> thefit_;
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98 | casa::Vector<casa::Float> residual_;
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99 | casa::Vector<casa::Float> estimate_;
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100 | };
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101 |
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102 | } // namespace
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103 |
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104 | #endif
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