1 | //#--------------------------------------------------------------------------- |
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2 | //# SDMath.h: A collection of single dish mathematical operations |
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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: |
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30 | //#--------------------------------------------------------------------------- |
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31 | #ifndef SDMATH_H |
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32 | #define SDMATH_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 | #include <casa/aips.h> |
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37 | #include <casa/Utilities/CountedPtr.h> |
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38 | #include <coordinates/Coordinates/FrequencyAligner.h> |
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39 | |
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40 | #include "SDDefs.h" |
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41 | #include "SDLog.h" |
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42 | |
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43 | class casa::Table; |
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44 | class casa::MEpoch; |
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45 | class casa::MPosition; |
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46 | template<class T> class casa::PtrBlock; |
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47 | template<class T> class casa::Matrix; |
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48 | template<class T> class casa::ROScalarColumn; |
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49 | template<class T> class casa::ROArrayColumn; |
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50 | |
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51 | namespace asap { |
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52 | |
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53 | class SDMemTable; |
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54 | class SDDataDesc; |
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55 | |
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56 | class SDMath : private SDLog { |
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57 | |
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58 | public: |
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59 | |
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60 | // Default constructor |
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61 | SDMath(); |
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62 | |
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63 | // Copy Constructor (copy semantics) |
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64 | SDMath(const SDMath& other); |
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65 | |
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66 | // Assignment (copy semantics) |
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67 | SDMath &operator=(const SDMath& other); |
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68 | |
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69 | // Destructor |
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70 | ~SDMath(); |
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71 | |
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72 | // Binary Table operators. op=ADD, SUB, MUL, DIV, QUOTIENT |
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73 | casa::CountedPtr<SDMemTable> binaryOperate(const casa::CountedPtr<SDMemTable>& left, |
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74 | const casa::CountedPtr<SDMemTable>& right, |
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75 | const casa::String& op, casa::Bool preserve, |
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76 | casa::Bool tSys); |
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77 | |
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78 | // Average in time |
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79 | casa::CountedPtr<SDMemTable> average(const std::vector<casa::CountedPtr<SDMemTable> >& in, |
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80 | const casa::Vector<casa::Bool>& mask, |
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81 | casa::Bool scanAverage, |
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82 | const casa::String& weightStr, |
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83 | casa::Bool align=casa::False); |
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84 | |
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85 | // Statistics. If row<0, all rows are done otherwise, just the |
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86 | // specified row. |
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87 | std::vector<float> statistic(const casa::CountedPtr<SDMemTable>& in, |
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88 | const casa::Vector<casa::Bool>& mask, |
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89 | const casa::String& which, casa::Int row) const; |
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90 | |
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91 | // Bin up spectra |
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92 | SDMemTable* bin(const SDMemTable& in, casa::Int width); |
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93 | |
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94 | // Resample spectra |
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95 | SDMemTable* resample(const SDMemTable& in, const casa::String& method, |
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96 | casa::Float factor); |
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97 | |
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98 | // Smooth |
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99 | SDMemTable* smooth(const SDMemTable& in, const casa::String& kernel, |
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100 | casa::Float width, casa::Bool doAll); |
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101 | |
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102 | // Flux conversion between Jansky and Kelvin |
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103 | SDMemTable* convertFlux(const SDMemTable& in, casa::Float D, |
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104 | casa::Float etaAp, |
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105 | casa::Float JyPerK, casa::Bool doAll); |
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106 | |
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107 | // Gain-elevation correction |
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108 | SDMemTable* gainElevation(const SDMemTable& in, |
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109 | const casa::Vector<casa::Float>& coeffs, |
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110 | const casa::String& fileName, |
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111 | const casa::String& method, |
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112 | casa::Bool doAll); |
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113 | |
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114 | // Frequency Alignment |
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115 | SDMemTable* frequencyAlignment(const SDMemTable& in, const casa::String& refTime, |
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116 | const casa::String& method, casa::Bool perFreqID); |
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117 | |
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118 | // Opacity correction |
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119 | SDMemTable* opacity(const SDMemTable& in, casa::Float tau, casa::Bool doAll); |
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120 | |
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121 | // Simple unary mathematical operations. what=0 (mul) or 1 (add) |
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122 | SDMemTable* unaryOperate(const SDMemTable& in, casa::Float offset, |
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123 | casa::Bool doAll, casa::uInt what, casa::Bool tSys); |
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124 | |
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125 | // Average polarizations. |
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126 | SDMemTable* averagePol(const SDMemTable& in, |
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127 | const casa::Vector<casa::Bool>& mask, |
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128 | const casa::String& wtStr); |
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129 | |
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130 | SDMemTable* frequencySwitch(const SDMemTable& in); |
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131 | |
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132 | |
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133 | // Rotate XY phase. Value in degrees. |
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134 | void rotateXYPhase(SDMemTable& in, casa::Float value, casa::Bool doAll); |
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135 | |
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136 | // Rotate Q & U by operating on the raw correlations.Value in degrees. |
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137 | void rotateLinPolPhase(SDMemTable& in, casa::Float value, casa::Bool doAll); |
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138 | |
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139 | // Complex conjugate of phase |
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140 | void invertPhase(SDMemTable& in, casa::Bool doAll); |
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141 | |
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142 | // Swap polarisation order |
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143 | void swapPol(SDMemTable& in, casa::Bool doAll); |
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144 | |
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145 | private: |
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146 | |
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147 | // Weighting type for time averaging |
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148 | |
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149 | enum WeightType {NONE=0,VAR,TSYS,TINT,TINTSYS,nWeightTypes}; |
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150 | |
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151 | // Function to use accumulate data during time averaging |
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152 | |
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153 | void accumulate(casa::Double& timeSum, casa::Double& intSum, |
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154 | casa::Int& nAccum, |
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155 | casa::MaskedArray<casa::Float>& sum, |
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156 | casa::Array<casa::Float>& sumSq, |
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157 | casa::Array<casa::Float>& nPts, |
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158 | casa::Array<casa::Float>& tSysSum, |
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159 | casa::Array<casa::Float>& tSysSqSum, |
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160 | const casa::Array<casa::Float>& tSys, |
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161 | const casa::Array<casa::Float>& nInc, |
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162 | const casa::Vector<casa::Bool>& mask, |
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163 | casa::Double time, casa::Double interval, |
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164 | const std::vector<casa::CountedPtr<SDMemTable> >& in, |
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165 | casa::uInt iTab, casa::uInt iRow, |
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166 | casa::uInt axis, casa::uInt nAxesSub, |
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167 | casa::Bool useMask, WeightType wtType); |
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168 | |
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169 | // Work out conversion factor for converting Jy<->K per IF per row and apply |
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170 | void convertBrightnessUnits(SDMemTable* pTabOut, const SDMemTable& in, |
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171 | casa::Bool toKelvin, casa::Float sFac, casa::Bool doAll); |
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172 | |
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173 | // Convert weight string to enum value |
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174 | |
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175 | void convertWeightString(WeightType& wt, const casa::String& weightStr, |
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176 | casa::Bool listType);; |
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177 | |
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178 | // Convert interpolation type string |
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179 | // void convertInterpString(casa::Int& type, const casa::String& interp); |
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180 | void convertInterpString(casa::InterpolateArray1D<casa::Double,casa::Float>::InterpolationMethod& method, |
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181 | const casa::String& interp); |
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182 | |
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183 | // Scale data with values from an ascii Table |
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184 | void scaleFromAsciiTable(SDMemTable* pTabOut, const SDMemTable& in, |
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185 | const casa::String& fileName, |
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186 | const casa::String& col0, const casa::String& col1, |
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187 | const casa::String& methodStr, casa::Bool doAll, |
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188 | const casa::Vector<casa::Float>& xOut, casa::Bool doTSys); |
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189 | |
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190 | // Scale data with values from a Table |
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191 | void scaleFromTable(SDMemTable* pTabOut, const SDMemTable& in, const casa::Table& tTable, |
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192 | const casa::String& col0, const casa::String& col1, |
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193 | const casa::String& methodStr, casa::Bool doAll, |
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194 | const casa::Vector<casa::Float>& xOut, casa::Bool doTSys); |
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195 | |
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196 | // Scale data and optionally TSys by values in a Vector |
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197 | void scaleByVector(SDMemTable* pTabOut, const SDMemTable& in, |
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198 | casa::Bool doAll, const casa::Vector<casa::Float>& factor, |
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199 | casa::Bool doTSys); |
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200 | |
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201 | // Convert time String to Epoch |
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202 | casa::MEpoch epochFromString(const casa::String& str, casa::MEpoch::Types timeRef); |
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203 | |
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204 | // Function to fill Scan Container when averaging in time |
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205 | |
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206 | void fillSDC(SDContainer& sc, const casa::Array<casa::Bool>& mask, |
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207 | const casa::Array<casa::Float>& data, |
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208 | const casa::Array<casa::Float>& tSys, |
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209 | casa::Int scanID, casa::Double timeStamp, |
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210 | casa::Double interval, const casa::String& sourceName, |
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211 | const casa::Vector<casa::uInt>& freqID); |
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212 | |
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213 | // Format EPoch |
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214 | casa::String formatEpoch(const casa::MEpoch& epoch) const; |
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215 | |
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216 | // Align in Frequency |
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217 | SDMemTable* frequencyAlign(const SDMemTable& in, |
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218 | casa::MFrequency::Types system, |
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219 | const casa::String& timeRef, |
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220 | const casa::String& method, |
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221 | casa::Bool perIF); |
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222 | |
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223 | // Generate frequency aligners |
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224 | void generateFrequencyAligners(casa::PtrBlock<casa::FrequencyAligner<casa::Float>* >& a, |
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225 | const SDDataDesc& dDesc, |
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226 | const SDMemTable& in, casa::uInt nChan, |
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227 | casa::MFrequency::Types system, |
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228 | const casa::MPosition& refPos, |
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229 | const casa::MEpoch& refEpoch, |
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230 | casa::Bool perFreqID); |
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231 | |
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232 | // Generate data description table(combines source and freqID); |
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233 | void generateDataDescTable(casa::Matrix<casa::uInt>& ddIdx, |
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234 | SDDataDesc& dDesc, |
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235 | casa::uInt nIF, |
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236 | const SDMemTable& in, |
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237 | const casa::Table& tabIn, |
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238 | const casa::ROScalarColumn<casa::String>& srcCol, |
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239 | const casa::ROArrayColumn<casa::uInt>& fqIDCol, |
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240 | casa::Bool perFreqID); |
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241 | |
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242 | // Get row range from SDMemTable state |
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243 | casa::Vector<casa::uInt> getRowRange(const SDMemTable& in) const; |
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244 | |
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245 | // Is row in the row range ? |
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246 | casa::Bool rowInRange(casa::uInt i, const casa::Vector<casa::uInt>& range) const; |
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247 | |
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248 | // Set slice to cursor or all axes |
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249 | void setCursorSlice(casa::IPosition& start, casa::IPosition& end, |
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250 | casa::Bool doAll, const SDMemTable& in) const; |
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251 | |
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252 | // Function to normalize data when averaging in time |
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253 | |
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254 | void normalize(casa::MaskedArray<casa::Float>& data, |
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255 | const casa::Array<casa::Float>& sumSq, |
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256 | const casa::Array<casa::Float>& tSysSumSq, |
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257 | const casa::Array<casa::Float>& nPts, |
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258 | casa::Double intSum, |
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259 | WeightType wtType, casa::Int axis, casa::Int nAxes); |
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260 | |
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261 | // Put the data and mask into the SDContainer |
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262 | void putDataInSDC(SDContainer& sc, const casa::Array<casa::Float>& data, |
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263 | const casa::Array<casa::Bool>& mask); |
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264 | |
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265 | // Read ascii file into a Table |
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266 | |
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267 | casa::Table readAsciiFile(const casa::String& fileName) const; |
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268 | |
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269 | }; // class |
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270 | |
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271 | } // namespace |
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272 | |
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273 | #endif |
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