[2980] | 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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