1 | // |
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2 | // C++ Interface: STPol |
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3 | // |
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4 | // Description: |
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5 | // |
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6 | // |
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7 | // Author: Malte Marquarding <Malte.Marquarding@csiro.au>, (C) 2006 |
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8 | // |
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9 | // Copyright: See COPYING file that comes with this distribution |
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10 | // |
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11 | // |
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12 | #ifndef ASAPSTPOL_H |
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13 | #define ASAPSTPOL_H |
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14 | |
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15 | #include <map> |
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16 | #include <utility> |
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17 | |
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18 | #include <casa/aips.h> |
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19 | #include <casa/Exceptions/Error.h> |
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20 | #include <casa/Arrays/Matrix.h> |
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21 | #include <casa/Arrays/Vector.h> |
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22 | #include "Factory.h" |
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23 | |
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24 | namespace asap { |
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25 | |
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26 | /** |
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27 | Convert betweeen the possible polarisations (linear, circular, stokes, stokes2) |
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28 | |
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29 | @author Malte Marquarding |
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30 | @date $Date:$ |
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31 | |
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32 | */ |
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33 | class STPol { |
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34 | public: |
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35 | |
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36 | typedef void (STPol::*polOperation)( casa::Float phase ); |
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37 | STPol(): totalangle_(0.0),feedhand_(1.0) {} |
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38 | virtual ~STPol() {} |
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39 | |
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40 | typedef FactoryBase<STPol> STPolFactory; |
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41 | |
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42 | static STPol* getPolClass( std::map<std::string,STPol::STPolFactory *> factories, |
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43 | const std::string& type ) |
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44 | { return factories[type]->create(); } |
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45 | |
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46 | casa::Vector<casa::Float> getSpectrum( casa::uInt index, const std::string& mode ) |
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47 | { |
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48 | if (mode == "linear") |
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49 | return getLinear(index); |
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50 | else if ( mode == "stokes" ) |
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51 | return getStokes(index); |
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52 | else if ( mode == "linpol" ) |
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53 | return getLinPol(index); |
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54 | else if ( mode == "circular" ) |
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55 | return getCircular(index); |
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56 | else |
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57 | throw(casa::AipsError("Polarisation type unknown")); |
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58 | } |
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59 | |
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60 | virtual casa::Vector<casa::Float> getCircular( casa::uInt index ) = 0; |
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61 | |
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62 | virtual casa::Vector<casa::Float> getStokes( casa::uInt index ) = 0; |
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63 | |
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64 | virtual casa::Vector<casa::Float> getLinPol( casa::uInt index ) = 0; |
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65 | |
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66 | virtual casa::Vector<casa::Float> getLinear( casa::uInt index ) = 0; |
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67 | |
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68 | virtual void rotatePhase( casa::Float ) {} |
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69 | virtual void rotateLinPolPhase( casa::Float) {} |
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70 | |
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71 | virtual void invertPhase( casa::Float ) {} |
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72 | |
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73 | casa::uInt nspec() const { return basespectra_.ncolumn(); } |
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74 | |
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75 | const casa::Vector<casa::Float> getSpectrum(casa::uInt index) const |
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76 | { return basespectra_.column(index); } |
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77 | |
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78 | casa::Matrix<casa::Float>& getSpectra() |
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79 | { return basespectra_; } |
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80 | |
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81 | void setSpectra(const casa::Matrix<casa::Float>& spec) |
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82 | { basespectra_.resize(); basespectra_ = spec; } |
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83 | |
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84 | |
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85 | void setPhaseCorrections(casa::Float totalang=0.0, casa::Float feedhand=1.0) |
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86 | { totalangle_=totalang;feedhand_=feedhand;} |
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87 | |
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88 | casa::Float getTotalPhase() const { return totalangle_; } |
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89 | casa::Float getFeedHand() const { return feedhand_; } |
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90 | |
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91 | static std::pair<int, std::string> polFromString(const std::string& key); |
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92 | static std::string getPolLabel(int index, const std::string& type = "linear"); |
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93 | |
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94 | private: |
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95 | static void initPolMap(); |
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96 | static void initLabelMap(); |
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97 | static std::map<std::string, std::pair<int, std::string> > polmap_; |
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98 | static std::map<std::string, std::map<int, std::string> > labelmap_; |
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99 | |
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100 | casa::Float totalangle_,feedhand_; |
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101 | std::string mode_; |
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102 | casa::Matrix<casa::Float> basespectra_; |
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103 | |
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104 | }; |
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105 | |
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106 | } |
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107 | |
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108 | #endif |
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