1 | //# SpectralElement.cc: Describes (a set of related) spectral lines |
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2 | //# Copyright (C) 2001,2004 |
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3 | //# Associated Universities, Inc. Washington DC, USA. |
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4 | //# |
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5 | //# This library is free software; you can redistribute it and/or modify it |
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6 | //# under the terms of the GNU Library General Public License as published by |
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7 | //# the Free Software Foundation; either version 2 of the License, or (at your |
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8 | //# option) any later version. |
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9 | //# |
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10 | //# This library is distributed in the hope that it will be useful, but WITHOUT |
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11 | //# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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12 | //# FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public |
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13 | //# License for more details. |
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14 | //# |
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15 | //# You should have received a copy of the GNU Library General Public License |
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16 | //# along with this library; if not, write to the Free Software Foundation, |
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17 | //# Inc., 675 Massachusetts Ave, Cambridge, MA 02139, USA. |
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18 | //# |
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19 | //# Correspondence concerning AIPS++ should be addressed as follows: |
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20 | //# Internet email: aips2-request@nrao.edu. |
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21 | //# Postal address: AIPS++ Project Office |
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22 | //# National Radio Astronomy Observatory |
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23 | //# 520 Edgemont Road |
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24 | //# Charlottesville, VA 22903-2475 USA |
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25 | //# |
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26 | //# $Id: PolynomialSpectralElement.cc 21451 2014-06-10 07:48:08Z gervandiepen $ |
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27 | |
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28 | //# Includes |
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29 | #include <components/SpectralComponents/PolynomialSpectralElement.h> |
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30 | |
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31 | #include <scimath/Functionals/Polynomial.h> |
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32 | |
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33 | #include <casa/iostream.h> |
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34 | |
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35 | namespace casa { //# NAMESPACE CASA - BEGIN |
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36 | |
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37 | PolynomialSpectralElement::PolynomialSpectralElement() |
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38 | : SpectralElement(SpectralElement::POLYNOMIAL, Vector<Double>(0)) { |
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39 | _setFunction( |
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40 | std::tr1::shared_ptr<Polynomial<Double> >( |
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41 | new Polynomial<Double>() |
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42 | ) |
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43 | ); |
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44 | } |
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45 | |
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46 | PolynomialSpectralElement::PolynomialSpectralElement(const uInt n) |
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47 | : SpectralElement(SpectralElement::POLYNOMIAL, Vector<Double>(n+1, 0.)) { |
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48 | _setFunction( |
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49 | std::tr1::shared_ptr<Polynomial<Double> >( |
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50 | new Polynomial<Double>(n) |
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51 | ) |
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52 | ); |
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53 | } |
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54 | |
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55 | PolynomialSpectralElement::PolynomialSpectralElement(const Vector<Double>& param) |
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56 | : SpectralElement(SpectralElement::POLYNOMIAL, param) { |
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57 | _setFunction( |
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58 | std::tr1::shared_ptr<Polynomial<Double> >( |
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59 | new Polynomial<Double>(param.size()) |
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60 | ) |
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61 | ); |
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62 | _set(param); |
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63 | fix(Vector<Bool>(param.size(), False)); |
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64 | } |
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65 | |
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66 | PolynomialSpectralElement::PolynomialSpectralElement( |
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67 | const PolynomialSpectralElement &other |
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68 | ) : SpectralElement(other) {} |
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69 | |
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70 | PolynomialSpectralElement::~PolynomialSpectralElement() {} |
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71 | |
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72 | SpectralElement* PolynomialSpectralElement::clone() const { |
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73 | return new PolynomialSpectralElement(*this); |
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74 | } |
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75 | |
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76 | /* |
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77 | Double PolynomialSpectralElement::operator()(const Double x) const { |
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78 | Double s = 0; |
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79 | Vector<Double> p = get(); |
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80 | for (uInt i=0; i<p.size(); i++) { |
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81 | Double prod = 1; |
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82 | for (uInt j=0; j<i; j++) { |
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83 | prod *= x; |
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84 | } |
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85 | s += p[i]*prod; |
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86 | } |
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87 | return s; |
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88 | } |
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89 | */ |
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90 | |
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91 | uInt PolynomialSpectralElement::getDegree() const { |
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92 | return get().size() - 1; |
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93 | } |
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94 | |
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95 | ostream &operator<<(ostream &os, const PolynomialSpectralElement &elem) { |
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96 | os << SpectralElement::fromType((elem.getType())) << " element: " << endl; |
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97 | uInt degree = elem.getDegree(); |
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98 | os << " Degree: " << degree << endl; |
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99 | os << " Function: c0 "; |
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100 | ostringstream ss; |
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101 | Vector<Double> c = elem.get(); |
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102 | ss << "c0: " << c[0] << endl; |
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103 | for (uInt i=1; i<=degree; i++) { |
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104 | os << " + c" << i << "*x"; |
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105 | if (i > 1) { |
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106 | os << "**" << i; |
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107 | } |
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108 | ss << "c" << i << ": " << c[i] << endl; |
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109 | } |
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110 | os << endl; |
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111 | os << ss.str(); |
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112 | |
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113 | |
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114 | return os; |
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115 | } |
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116 | |
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117 | } //# NAMESPACE CASA - END |
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118 | |
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