source: trunk/src/STFitter.h@ 2804

Last change on this file since 2804 was 2666, checked in by Malte Marquarding, 12 years ago

Ticket #173: added setting of constraints on the fitter.

  • Property svn:eol-style set to native
  • Property svn:keywords set to Author Date Id Revision
File size: 3.3 KB
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1//#---------------------------------------------------------------------------
2//# Fitter.h: A Fitter class for spectra
3//#---------------------------------------------------------------------------
4//# Copyright (C) 2004
5//# ATNF
6//#
7//# This program is free software; you can redistribute it and/or modify it
8//# under the terms of the GNU General Public License as published by the Free
9//# Software Foundation; either version 2 of the License, or (at your option)
10//# any later version.
11//#
12//# This program is distributed in the hope that it will be useful, but
13//# WITHOUT ANY WARRANTY; without even the implied warranty of
14//# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
15//# Public License for more details.
16//#
17//# You should have received a copy of the GNU General Public License along
18//# with this program; if not, write to the Free Software Foundation, Inc.,
19//# 675 Massachusetts Ave, Cambridge, MA 02139, USA.
20//#
21//# Correspondence concerning this software should be addressed as follows:
22//# Internet email: Malte.Marquarding@csiro.au
23//# Postal address: Malte Marquarding,
24//# Australia Telescope National Facility,
25//# P.O. Box 76,
26//# Epping, NSW, 2121,
27//# AUSTRALIA
28//#
29//# $Id: STFitter.h 2666 2012-10-15 04:52:38Z MalteMarquarding $
30//#---------------------------------------------------------------------------
31#ifndef STFITTER_H
32#define STFITTER_H
33
34#include <string>
35#include <vector>
36
37#include <casa/Arrays/Vector.h>
38#include <casa/Containers/Block.h>
39#include <scimath/Functionals/Function.h>
40#include <scimath/Functionals/CompoundFunction.h>
41#include <scimath/Fitting/GenericL2Fit.h>
42
43
44#include "STFitEntry.h"
45
46
47namespace asap {
48
49class Fitter {
50public:
51 Fitter();
52 virtual ~Fitter();
53 // allowed "gauss" and "poly". ncomp is either numvber of gaussions
54 // or order of the polynomial
55 bool setExpression(const std::string& expr, int ncomp=1);
56 bool setData(std::vector<float> absc, std::vector<float> spec,
57 std::vector<bool> mask);
58 bool setParameters(std::vector<float> params);
59 bool setFixedParameters(std::vector<bool> fixed);
60 void addConstraint(const std::vector<float>& constraint);
61
62 std::vector<float> getResidual() const;
63 std::vector<float> getFit() const;
64 std::vector<float> getParameters() const;
65 std::vector<bool> getFixedParameters() const;
66
67 std::vector<float> getEstimate() const;
68 std::vector<float> getErrors() const;
69 float getChisquared() const;
70 void reset();
71 bool fit();
72 // Fit via linear method
73 bool lfit();
74 bool computeEstimate();
75
76 std::vector<float> evaluate(int whichComp) const;
77
78 STFitEntry getFitEntry() const;
79
80private:
81 void clear();
82 void applyConstraints(casa::GenericL2Fit<casa::Float>& fitter);
83 casa::Vector<casa::Float> x_;
84 casa::Vector<casa::Float> y_;
85 casa::Vector<casa::Bool> m_;
86 casa::PtrBlock<casa::Function<casa::Float>* > funcs_;
87 std::vector<std::string> funcnames_;
88 std::vector<int> funccomponents_;
89
90 //Bool estimateSet_;
91 casa::Float chisquared_;
92 casa::Vector<casa::Float> parameters_;
93 casa::Vector<casa::Bool> fixedpar_;
94 std::vector<std::vector<float> > constraints_;
95
96 casa::Vector<casa::Float> error_;
97 casa::Vector<casa::Float> thefit_;
98 casa::Vector<casa::Float> residual_;
99 casa::Vector<casa::Float> estimate_;
100};
101
102} // namespace
103
104#endif
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