1 | #include <iostream>
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2 | #include <fstream>
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3 |
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4 | #include <casa/BasicSL/String.h>
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5 | #include <casa/Arrays/Vector.h>
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6 | #include <casa/Arrays/Matrix.h>
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7 | #include <casa/Arrays/Cube.h>
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8 | #include <casa/Arrays/ArrayMath.h>
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9 | // #include <casa/Inputs/Input.h>
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10 | #include <casa/Quanta/Quantum.h>
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11 | #include <casa/Quanta/QuantumHolder.h>
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12 | #include <casa/Utilities/CountedPtr.h>
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13 |
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14 | #include <tables/Tables/Table.h>
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15 | #include <tables/Tables/TableRecord.h>
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16 | #include <tables/Tables/ExprNode.h>
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17 | #include <tables/Tables/ScalarColumn.h>
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18 | #include <tables/Tables/ArrayColumn.h>
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19 |
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20 | #include <measures/Measures/MDirection.h>
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21 |
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22 | #include <Scantable.h>
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23 | #include "STGrid.h"
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24 |
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25 | using namespace std ;
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26 | using namespace casa ;
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27 | using namespace asap ;
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28 |
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29 | namespace asap {
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30 |
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31 | // constructor
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32 | STGrid::STGrid()
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33 | {
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34 | init() ;
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35 | }
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36 |
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37 | STGrid::STGrid( const string infile )
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38 | {
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39 | init() ;
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40 |
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41 | setFileIn( infile ) ;
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42 | }
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43 |
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44 | void STGrid::init()
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45 | {
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46 | nx_ = -1 ;
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47 | ny_ = -1 ;
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48 | cellx_ = 0.0 ;
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49 | celly_ = 0.0 ;
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50 | center_ = Vector<Double> ( 2, 0.0 ) ;
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51 | convType_ = "BOX" ;
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52 | convSupport_ = -1 ;
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53 | userSupport_ = -1 ;
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54 | convSampling_ = 100 ;
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55 | }
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56 |
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57 | void STGrid::setFileIn( const string infile )
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58 | {
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59 | String name( infile ) ;
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60 | if ( infile_.compare( name ) != 0 ) {
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61 | infile_ = String( infile ) ;
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62 | tab_ = Table( infile_ ) ;
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63 | }
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64 | }
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65 |
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66 | void STGrid::setPolList( vector<unsigned int> pols )
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67 | {
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68 | //pollist_ = Vector<uInt>( pols ) ;
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69 | pollist_.assign( Vector<uInt>( pols ) ) ;
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70 | cout << "pollist_ = " << pollist_ << endl ;
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71 | }
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72 |
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73 | void STGrid::defineImage( int nx,
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74 | int ny,
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75 | string scellx,
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76 | string scelly,
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77 | string scenter )
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78 | {
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79 | ROArrayColumn<Double> dirCol( tab_, "DIRECTION" ) ;
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80 | Matrix<Double> direction = dirCol.getColumn() ;
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81 | Double rmax, rmin, dmax, dmin ;
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82 | minMax( rmin, rmax, direction.row( 0 ) ) ;
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83 | minMax( dmin, dmax, direction.row( 1 ) ) ;
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84 |
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85 | Int npx = (Int)nx ;
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86 | Int npy = (Int)ny ;
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87 | String cellx( scellx ) ;
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88 | String celly( scelly ) ;
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89 | String center( scenter ) ;
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90 | setupGrid( npx, npy,
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91 | cellx, celly,
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92 | rmin, rmax,
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93 | dmin, dmax,
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94 | center ) ;
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95 | }
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96 |
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97 | void STGrid::setOption( string convType,
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98 | int convSupport )
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99 | {
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100 | convType_ = String( convType ) ;
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101 | convType_.upcase() ;
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102 | userSupport_ = (Int)convSupport ;
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103 | }
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104 |
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105 | #define NEED_UNDERSCORES
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106 | #if defined(NEED_UNDERSCORES)
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107 | #define ggridsd ggridsd_
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108 | #endif
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109 | extern "C" {
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110 | void ggridsd(Double*,
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111 | const Complex*,
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112 | Int*,
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113 | Int*,
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114 | Int*,
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115 | const Int*,
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116 | const Int*,
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117 | const Float*,
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118 | Int*,
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119 | Int*,
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120 | Complex*,
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121 | Float*,
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122 | Int*,
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123 | Int*,
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124 | Int *,
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125 | Int *,
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126 | Int*,
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127 | Int*,
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128 | Float*,
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129 | Int*,
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130 | Int*,
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131 | Double*);
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132 | }
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133 | void STGrid::grid()
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134 | {
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135 |
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136 | // retrieve data
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137 | Cube<Float> spectra ;
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138 | Matrix<Double> direction ;
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139 | Cube<uChar> flagtra ;
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140 | Matrix<uInt> rflag ;
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141 | getData( infile_, spectra, direction, flagtra, rflag ) ;
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142 | IPosition sshape = spectra.shape() ;
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143 | Int npol = sshape[0] ;
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144 | Int nchan = sshape[1] ;
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145 | Int nrow = sshape[2] ;
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146 | cout << "spectra.shape()=" << spectra.shape() << endl ;
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147 | cout << "max(spectra) = " << max(spectra) << endl ;
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148 |
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149 | // flagtra: uChar -> Int
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150 | // rflag: uInt -> Int
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151 | // Matrix<Int> flagI ;
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152 | // Vector<Int> rflagI ;
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153 | Cube<Int> flagI ;
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154 | Matrix<Int> rflagI ;
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155 | toInt( &flagtra, &flagI ) ;
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156 | toInt( &rflag, &rflagI ) ;
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157 |
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158 | cout << "flagI.shape() = " << flagI.shape() << endl ;
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159 | cout << "rflagI.shape() = " << rflagI.shape() << endl ;
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160 |
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161 | // grid parameter
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162 | // cout << "----------" << endl ;
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163 | // cout << "Grid parameter summary" << endl ;
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164 | // cout << " (nx,ny) = (" << nx_ << "," << ny_ << ")" << endl ;
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165 | // cout << " (cellx,celly) = (" << cellx_ << "," << celly_ << ")" << endl ;
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166 | // cout << " center = " << center_ << endl ;
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167 | // cout << "----------" << endl ;
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168 |
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169 | // convolution kernel
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170 | Vector<Float> convFunc ;
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171 | setConvFunc( convFunc ) ;
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172 | //cout << "convSupport=" << convSupport_ << endl ;
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173 | //cout << "convFunc=" << convFunc << endl ;
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174 |
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175 | // world -> pixel
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176 | Matrix<Double> xypos( direction.shape(), 0.0 ) ;
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177 | toPixel( direction, xypos ) ;
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178 | //cout << "max(xypos.row(0))=" << max(xypos.row(0)) << endl ;
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179 | //cout << "min(xypos.row(0))=" << min(xypos.row(0)) << endl ;
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180 | //cout << "max(xypos.row(1))=" << max(xypos.row(1)) << endl ;
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181 | //cout << "min(xypos.row(1))=" << min(xypos.row(1)) << endl ;
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182 | // for ( Int irow = 0 ; irow < nrow ; irow++ ) {
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183 | // if ( spectra.column( irow )(0) > 0.0 ) {
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184 | // cout << irow << ": xypos=" << xypos.column( irow )
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185 | // << " data = " << spectra.column( irow ) << endl ;
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186 | // }
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187 | // }
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188 |
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189 | // weighting factor
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190 | Matrix<Float> weight( IPosition( 2, nchan, nrow ), 1.0 ) ;
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191 |
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192 | // // call ggridsd
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193 | Bool deletePos, deleteData, deleteWgt, deleteFlag, deleteFlagR, deleteConv, deleteDataG, deleteWgtG ;
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194 | Double *xypos_p = xypos.getStorage( deletePos ) ;
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195 | //Matrix<Complex> dataC( spectra.shape(), 0.0 ) ;
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196 | Cube<Complex> dataC( spectra.shape(), 0.0 ) ;
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197 | setReal( dataC, spectra ) ;
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198 | const Complex *data_p = dataC.getStorage( deleteData ) ;
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199 | const Float *wgt_p = weight.getStorage( deleteWgt ) ;
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200 | const Int *flag_p = flagI.getStorage( deleteFlag ) ;
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201 | const Int *rflag_p = rflagI.getStorage( deleteFlagR ) ;
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202 | Float *conv_p = convFunc.getStorage( deleteConv ) ;
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203 | //Int npol = 1 ;
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204 | // Extend grid plane with convSupport_
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205 | //IPosition gshape( 4, nx_, ny_, npol, nchan ) ;
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206 | Int gnx = nx_+convSupport_*2 ;
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207 | Int gny = ny_+convSupport_*2 ;
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208 | IPosition gshape( 4, gnx, gny, npol, nchan ) ;
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209 | Array<Complex> gdataArrC( gshape, 0.0 ) ;
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210 | Array<Float> gwgtArr( gshape, 0.0 ) ;
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211 | Complex *gdata_p = gdataArrC.getStorage( deleteDataG ) ;
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212 | Float *wdata_p = gwgtArr.getStorage( deleteWgtG ) ;
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213 | Int idopsf = 0 ;
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214 | Int irow = -1 ;
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215 | Int *chanMap = new Int[nchan] ;
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216 | {
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217 | Int *work_p = chanMap ;
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218 | for ( Int i = 0 ; i < nchan ; i++ ) {
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219 | *work_p = i ;
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220 | work_p++ ;
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221 | }
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222 | }
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223 | Int *polMap = new Int[npol] ;
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224 | {
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225 | Int *work_p = polMap ;
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226 | for ( Int i = 0 ; i < npol ; i++ ) {
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227 | *work_p = i ;
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228 | work_p++ ;
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229 | }
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230 | }
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231 | Double *sumw_p = new Double[npol*nchan] ;
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232 | {
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233 | Double *work_p = sumw_p ;
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234 | for ( Int i = 0 ; i < npol*nchan ; i++ ) {
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235 | *work_p = 0.0 ;
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236 | work_p++ ;
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237 | }
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238 | }
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239 | ggridsd( xypos_p,
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240 | data_p,
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241 | &npol,
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242 | &nchan,
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243 | &idopsf,
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244 | flag_p,
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245 | rflag_p,
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246 | wgt_p,
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247 | &nrow,
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248 | &irow,
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249 | gdata_p,
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250 | wdata_p,
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251 | &gnx,
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252 | &gny,
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253 | &npol,
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254 | &nchan,
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255 | &convSupport_,
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256 | &convSampling_,
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257 | conv_p,
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258 | chanMap,
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259 | polMap,
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260 | sumw_p ) ;
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261 | xypos.putStorage( xypos_p, deletePos ) ;
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262 | dataC.freeStorage( data_p, deleteData ) ;
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263 | weight.freeStorage( wgt_p, deleteWgt ) ;
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264 | flagI.freeStorage( flag_p, deleteFlag ) ;
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265 | rflagI.freeStorage( rflag_p, deleteFlagR ) ;
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266 | convFunc.putStorage( conv_p, deleteConv ) ;
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267 | delete polMap ;
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268 | delete chanMap ;
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269 | gdataArrC.putStorage( gdata_p, deleteDataG ) ;
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270 | gwgtArr.putStorage( wdata_p, deleteWgtG ) ;
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271 | Array<Float> gdataArr = real( gdataArrC ) ;
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272 | data_.resize( gdataArr.shape() ) ;
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273 | data_ = 0.0 ;
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274 | for ( Int ix = 0 ; ix < nx_ ; ix++ ) {
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275 | for ( Int iy = 0 ; iy < ny_ ; iy++ ) {
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276 | for ( Int ip = 0 ; ip < npol ; ip++ ) {
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277 | for ( Int ic = 0 ; ic < nchan ; ic++ ) {
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278 | IPosition pos( 4, ix, iy, ip, ic ) ;
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279 | //if ( gwgtArr( pos ) > 0.0 )
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280 | // data_( pos ) = gdataArr( pos ) / gwgtArr( pos ) ;
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281 | IPosition gpos( 4, ix+convSupport_, iy+convSupport_, ip, ic ) ;
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282 | if ( gwgtArr( gpos ) > 0.0 )
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283 | data_( pos ) = gdataArr( gpos ) / gwgtArr( gpos ) ;
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284 | }
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285 | }
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286 | }
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287 | }
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288 | Matrix<Double> sumWeight( IPosition( 2, npol, nchan ), sumw_p, TAKE_OVER ) ;
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289 | //cout << "sumWeight = " << sumWeight << endl ;
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290 | //cout << "gdataArr = " << gdataArr << endl ;
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291 | //cout << "gwgtArr = " << gwgtArr << endl ;
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292 | //cout << "data_ " << data_ << endl ;
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293 | }
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294 |
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295 | void STGrid::setupGrid( Int &nx,
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296 | Int &ny,
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297 | String &cellx,
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298 | String &celly,
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299 | Double &xmin,
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300 | Double &xmax,
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301 | Double &ymin,
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302 | Double &ymax,
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303 | String ¢er )
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304 | {
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305 | //cout << "nx=" << nx << ", ny=" << ny << endl ;
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306 |
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307 | // center position
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308 | if ( center.size() == 0 ) {
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309 | center_(0) = 0.5 * ( xmin + xmax ) ;
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310 | center_(1) = 0.5 * ( ymin + ymax ) ;
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311 | }
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312 | else {
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313 | String::size_type pos0 = center.find( " " ) ;
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314 | if ( pos0 == String::npos ) {
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315 | throw AipsError( "bad string format in parameter center" ) ;
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316 | }
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317 | String::size_type pos1 = center.find( " ", pos0+1 ) ;
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318 | String typestr, xstr, ystr ;
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319 | if ( pos1 != String::npos ) {
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320 | typestr = center.substr( 0, pos0 ) ;
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321 | xstr = center.substr( pos0+1, pos1-pos0 ) ;
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322 | ystr = center.substr( pos1+1 ) ;
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323 | // todo: convert to J2000 (or direction ref for DIRECTION column)
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324 | }
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325 | else {
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326 | typestr = "J2000" ;
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327 | xstr = center.substr( 0, pos0 ) ;
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328 | ystr = center.substr( pos0+1 ) ;
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329 | }
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330 | QuantumHolder qh ;
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331 | String err ;
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332 | qh.fromString( err, xstr ) ;
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333 | Quantum<Double> xcen = qh.asQuantumDouble() ;
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334 | qh.fromString( err, ystr ) ;
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335 | Quantum<Double> ycen = qh.asQuantumDouble() ;
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336 | center_(0) = xcen.getValue( "rad" ) ;
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337 | center_(1) = ycen.getValue( "rad" ) ;
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338 | }
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339 |
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340 |
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341 | //Double wx = xmax - xmin ;
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342 | //Double wy = ymax - ymin ;
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343 | Double wx = max( abs(xmax-center_(0)), abs(xmin-center_(0)) ) * 2 ;
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344 | Double wy = max( abs(ymax-center_(1)), abs(ymin-center_(1)) ) * 2 ;
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345 | // take 10% margin
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346 | wx *= 1.10 ;
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347 | wy *= 1.10 ;
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348 | Quantum<Double> qcellx ;
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349 | Quantum<Double> qcelly ;
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350 | nx_ = nx ;
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351 | ny_ = ny ;
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352 | if ( nx < 0 && ny > 0 ) {
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353 | nx_ = ny ;
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354 | ny_ = ny ;
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355 | }
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356 | if ( ny < 0 && nx > 0 ) {
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357 | nx_ = nx ;
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358 | ny_ = nx ;
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359 | }
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360 | //cout << "nx_ = " << nx_ << ", ny_ = " << ny_ << endl ;
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361 | if ( cellx.size() != 0 && celly.size() != 0 ) {
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362 | readQuantity( qcellx, cellx ) ;
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363 | readQuantity( qcelly, celly ) ;
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364 | }
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365 | else if ( celly.size() != 0 ) {
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366 | cout << "Using celly to x-axis..." << endl ;
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367 | readQuantity( qcelly, celly ) ;
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368 | qcellx = qcelly ;
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369 | }
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370 | else if ( cellx.size() != 0 ) {
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371 | cout << "Using cellx to y-axis..." << endl ;
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372 | readQuantity( qcellx, cellx ) ;
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373 | qcelly = qcellx ;
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374 | }
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375 | else {
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376 | if ( nx_ < 0 ) {
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377 | cout << "No user preference in grid setting. Using default..." << endl ;
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378 | readQuantity( qcellx, "1.0arcmin" ) ;
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379 | qcelly = qcellx ;
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380 | }
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381 | else {
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382 | qcellx = Quantum<Double>( wx/nx_, "rad" ) ;
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383 | qcelly = Quantum<Double>( wy/ny_, "rad" ) ;
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384 | }
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385 | }
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386 | cellx_ = qcellx.getValue( "rad" ) ;
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387 | celly_ = qcelly.getValue( "rad" ) ;
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388 | if ( nx_ < 0 ) {
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389 | nx_ = Int( ceil( wx/cellx_ ) ) ;
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390 | ny_ = Int( ceil( wy/celly_ ) ) ;
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391 | }
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392 | }
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393 |
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394 | void STGrid::getData( String &infile,
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395 | Cube<Float> &spectra,
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396 | Matrix<Double> &direction,
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397 | Cube<uChar> &flagtra,
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398 | Matrix<uInt> &rflag )
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399 | {
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400 | Table tab( infile ) ;
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401 | //uInt npol = tab.keywordSet().asuInt( "nPol" ) ;
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402 | ROScalarColumn<uInt> polnoCol( tab, "POLNO" ) ;
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403 | //uInt npol = max( polnoCol.getColumn() ) + 1 ;
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404 | Vector<uInt> pols = polnoCol.getColumn() ;
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405 | Vector<uInt> pollistOrg ;
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406 | uInt npolOrg = 0 ;
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407 | for ( uInt i = 0 ; i < pols.size() ; i++ ) {
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408 | if ( allNE( pollistOrg, pols[i] ) ) {
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409 | pollistOrg.resize( npolOrg+1, True ) ;
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410 | pollistOrg[npolOrg] = pols[i] ;
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411 | npolOrg++ ;
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412 | }
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413 | }
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414 | if ( pollist_.size() == 0 )
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415 | pollist_ = pollistOrg ;
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416 | else {
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417 | Vector<uInt> newlist ;
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418 | uInt newsize = 0 ;
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419 | for ( uInt i = 0 ; i < pollist_.size() ; i++ ) {
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420 | if ( anyEQ( pols, pollist_[i] ) ) {
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421 | newlist.resize( newsize+1, True ) ;
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422 | newlist[newsize] = pollist_[i] ;
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423 | newsize++ ;
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424 | }
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425 | }
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426 | pollist_ = newlist ;
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427 | }
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428 | uInt npol = pollist_.size() ;
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429 | ROArrayColumn<uChar> tmpCol( tab, "FLAGTRA" ) ;
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430 | uInt nchan = tmpCol( 0 ).nelements() ;
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431 | uInt nrow = tab.nrow() / npolOrg ;
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432 | cout << "npol = " << npol << endl ;
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433 | cout << "nchan = " << nchan << endl ;
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434 | cout << "nrow = " << nrow << endl ;
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435 | spectra.resize( npol, nchan, nrow ) ;
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436 | flagtra.resize( npol, nchan, nrow ) ;
|
---|
437 | rflag.resize( npol, nrow ) ;
|
---|
438 | cout << "pollist_=" << pollist_ << endl ;
|
---|
439 | for ( uInt ipol = 0 ; ipol < npol ; ipol++ ) {
|
---|
440 | Table subt = tab( tab.col("POLNO") == pollist_[ipol] ) ;
|
---|
441 | ROArrayColumn<Float> spectraCol( subt, "SPECTRA" ) ;
|
---|
442 | ROArrayColumn<Double> directionCol( subt, "DIRECTION" ) ;
|
---|
443 | ROArrayColumn<uChar> flagtraCol( subt, "FLAGTRA" ) ;
|
---|
444 | ROScalarColumn<uInt> rflagCol( subt, "FLAGROW" ) ;
|
---|
445 | Matrix<Float> tmpF = spectra.yzPlane( ipol ) ;
|
---|
446 | Matrix<uChar> tmpUC = flagtra.yzPlane( ipol ) ;
|
---|
447 | Vector<uInt> tmpUI = rflag.row( ipol ) ;
|
---|
448 | cout << "tmpF.shape()=" << tmpF.shape() << endl ;
|
---|
449 | cout << "tmpUC.shape()=" << tmpUC.shape() << endl ;
|
---|
450 | cout << "tmpUI.shape()=" << tmpUI.shape() << endl ;
|
---|
451 | spectraCol.getColumn( tmpF ) ;
|
---|
452 | flagtraCol.getColumn( tmpUC ) ;
|
---|
453 | rflagCol.getColumn( tmpUI ) ;
|
---|
454 | if ( ipol == 0 )
|
---|
455 | directionCol.getColumn( direction ) ;
|
---|
456 | }
|
---|
457 | cout << "getData end" << endl ;
|
---|
458 | }
|
---|
459 |
|
---|
460 | void STGrid::toInt( Array<uChar> *u, Array<Int> *v )
|
---|
461 | {
|
---|
462 | uInt len = u->nelements() ;
|
---|
463 | Int *int_p = new Int[len] ;
|
---|
464 | Bool deleteIt ;
|
---|
465 | const uChar *data_p = u->getStorage( deleteIt ) ;
|
---|
466 | Int *i_p = int_p ;
|
---|
467 | const uChar *u_p = data_p ;
|
---|
468 | for ( uInt i = 0 ; i < len ; i++ ) {
|
---|
469 | *i_p = ( *u_p == 0 ) ? 0 : 1 ;
|
---|
470 | i_p++ ;
|
---|
471 | u_p++ ;
|
---|
472 | }
|
---|
473 | u->freeStorage( data_p, deleteIt ) ;
|
---|
474 | v->takeStorage( u->shape(), int_p, TAKE_OVER ) ;
|
---|
475 | }
|
---|
476 |
|
---|
477 | void STGrid::toInt( Array<uInt> *u, Array<Int> *v )
|
---|
478 | {
|
---|
479 | uInt len = u->nelements() ;
|
---|
480 | Int *int_p = new Int[len] ;
|
---|
481 | Bool deleteIt ;
|
---|
482 | const uInt *data_p = u->getStorage( deleteIt ) ;
|
---|
483 | Int *i_p = int_p ;
|
---|
484 | const uInt *u_p = data_p ;
|
---|
485 | for ( uInt i = 0 ; i < len ; i++ ) {
|
---|
486 | *i_p = ( *u_p == 0 ) ? 0 : 1 ;
|
---|
487 | i_p++ ;
|
---|
488 | u_p++ ;
|
---|
489 | }
|
---|
490 | u->freeStorage( data_p, deleteIt ) ;
|
---|
491 | v->takeStorage( u->shape(), int_p, TAKE_OVER ) ;
|
---|
492 | }
|
---|
493 |
|
---|
494 | void STGrid::toPixel( Matrix<Double> &world, Matrix<Double> &pixel )
|
---|
495 | {
|
---|
496 | // gridding will be done on (nx_+2*convSupport_) x (ny_+2*convSupport_)
|
---|
497 | // grid plane to avoid unexpected behavior on grid edge
|
---|
498 | Vector<Double> pixc( 2 ) ;
|
---|
499 | //pixc(0) = Double( nx_-1 ) * 0.5 ;
|
---|
500 | //pixc(1) = Double( ny_-1 ) * 0.5 ;
|
---|
501 | pixc(0) = Double( nx_+2*convSupport_-1 ) * 0.5 ;
|
---|
502 | pixc(1) = Double( ny_+2*convSupport_-1 ) * 0.5 ;
|
---|
503 | uInt nrow = world.shape()[1] ;
|
---|
504 | Vector<Double> cell( 2 ) ;
|
---|
505 | cell(0) = cellx_ ;
|
---|
506 | cell(1) = celly_ ;
|
---|
507 | //ofstream ofs( "grid.dat", ios::out ) ;
|
---|
508 | for ( uInt irow = 0 ; irow < nrow ; irow++ ) {
|
---|
509 | //ofs << irow ;
|
---|
510 | for ( uInt i = 0 ; i < 2 ; i++ ) {
|
---|
511 | pixel( i, irow ) = pixc(i) + ( world(i, irow) - center_(i) ) / cell(i) ;
|
---|
512 | //ofs << " " << world(i, irow) << " " << pixel(i, irow) ;
|
---|
513 | }
|
---|
514 | //ofs << endl ;
|
---|
515 | }
|
---|
516 | //ofs.close() ;
|
---|
517 | }
|
---|
518 |
|
---|
519 | void STGrid::boxFunc( Vector<Float> &convFunc, Int &convSize )
|
---|
520 | {
|
---|
521 | convFunc = 0.0 ;
|
---|
522 | for ( Int i = 0 ; i < convSize/2 ; i++ )
|
---|
523 | convFunc(i) = 1.0 ;
|
---|
524 | }
|
---|
525 |
|
---|
526 | #define NEED_UNDERSCORES
|
---|
527 | #if defined(NEED_UNDERSCORES)
|
---|
528 | #define grdsf grdsf_
|
---|
529 | #endif
|
---|
530 | extern "C" {
|
---|
531 | void grdsf(Double*, Double*);
|
---|
532 | }
|
---|
533 | void STGrid::spheroidalFunc( Vector<Float> &convFunc )
|
---|
534 | {
|
---|
535 | convFunc = 0.0 ;
|
---|
536 | for ( Int i = 0 ; i < convSampling_*convSupport_ ; i++ ) {
|
---|
537 | Double nu = Double(i) / Double(convSupport_*convSampling_) ;
|
---|
538 | Double val ;
|
---|
539 | grdsf( &nu, &val ) ;
|
---|
540 | convFunc(i) = ( 1.0 - nu * nu ) * val ;
|
---|
541 | }
|
---|
542 | }
|
---|
543 |
|
---|
544 | void STGrid::gaussFunc( Vector<Float> &convFunc )
|
---|
545 | {
|
---|
546 | convFunc = 0.0 ;
|
---|
547 | for ( Int i = 0 ; i < convSampling_*convSupport_ ; i++ ) {
|
---|
548 | Double hwhm = convSampling_ * convSupport_ * 0.25 ;
|
---|
549 | Double val = Double(i) / hwhm ;
|
---|
550 | convFunc(i) = exp( -log(2)*val*val ) ;
|
---|
551 | }
|
---|
552 | }
|
---|
553 |
|
---|
554 | void STGrid::pbFunc( Vector<Float> &convFunc )
|
---|
555 | {
|
---|
556 | convFunc = 0.0 ;
|
---|
557 | }
|
---|
558 |
|
---|
559 | void STGrid::setConvFunc( Vector<Float> &convFunc )
|
---|
560 | {
|
---|
561 | convSupport_ = userSupport_ ;
|
---|
562 | if ( convType_ == "BOX" ) {
|
---|
563 | if ( convSupport_ < 0 )
|
---|
564 | convSupport_ = 0 ;
|
---|
565 | Int convSize = convSampling_ * ( 2 * convSupport_ + 2 ) ;
|
---|
566 | convFunc.resize( convSize ) ;
|
---|
567 | boxFunc( convFunc, convSize ) ;
|
---|
568 | }
|
---|
569 | else if ( convType_ == "SF" ) {
|
---|
570 | if ( convSupport_ < 0 )
|
---|
571 | convSupport_ = 3 ;
|
---|
572 | Int convSize = convSampling_ * ( 2 * convSupport_ + 2 ) ;
|
---|
573 | convFunc.resize( convSize ) ;
|
---|
574 | spheroidalFunc( convFunc ) ;
|
---|
575 | }
|
---|
576 | else if ( convType_ == "GAUSS" ) {
|
---|
577 | if ( convSupport_ < 0 )
|
---|
578 | convSupport_ = 3 ;
|
---|
579 | Int convSize = convSampling_ * ( 2 * convSupport_ + 2 ) ;
|
---|
580 | convFunc.resize( convSize ) ;
|
---|
581 | gaussFunc( convFunc ) ;
|
---|
582 | }
|
---|
583 | else if ( convType_ == "PB" ) {
|
---|
584 | if ( convSupport_ < 0 )
|
---|
585 | convSupport_ = 0 ;
|
---|
586 | pbFunc( convFunc ) ;
|
---|
587 | }
|
---|
588 | else {
|
---|
589 | throw AipsError( "Unsupported convolution function" ) ;
|
---|
590 | }
|
---|
591 | }
|
---|
592 |
|
---|
593 | string STGrid::saveData( string outfile )
|
---|
594 | {
|
---|
595 | //Int polno = 0 ;
|
---|
596 | string outfile_ ;
|
---|
597 | if ( outfile.size() == 0 ) {
|
---|
598 | if ( infile_.lastchar() == '/' ) {
|
---|
599 | outfile_ = infile_.substr( 0, infile_.size()-1 ) ;
|
---|
600 | }
|
---|
601 | else {
|
---|
602 | outfile_ = infile_ ;
|
---|
603 | }
|
---|
604 | outfile_ += ".grid" ;
|
---|
605 | }
|
---|
606 | else {
|
---|
607 | outfile_ = outfile ;
|
---|
608 | }
|
---|
609 | CountedPtr<Scantable> ref( new Scantable( infile_, Table::Memory ) ) ;
|
---|
610 | //cout << "ref->nchan()=" << ref->nchan() << endl ;
|
---|
611 | CountedPtr<Scantable> out( new Scantable( *ref, True ) ) ;
|
---|
612 | Table tab = out->table() ;
|
---|
613 | IPosition dshape = data_.shape() ;
|
---|
614 | Int npol = dshape[2] ;
|
---|
615 | Int nchan = dshape[3] ;
|
---|
616 | Int nrow = nx_ * ny_ * npol ;
|
---|
617 | tab.rwKeywordSet().define( "nPol", npol ) ;
|
---|
618 | tab.addRow( nrow ) ;
|
---|
619 | Vector<Double> cpix( 2 ) ;
|
---|
620 | cpix(0) = Double( nx_ - 1 ) * 0.5 ;
|
---|
621 | cpix(1) = Double( ny_ - 1 ) * 0.5 ;
|
---|
622 | Vector<Double> dir( 2 ) ;
|
---|
623 | ArrayColumn<Double> directionCol( tab, "DIRECTION" ) ;
|
---|
624 | ArrayColumn<Float> spectraCol( tab, "SPECTRA" ) ;
|
---|
625 | ScalarColumn<uInt> polnoCol( tab, "POLNO" ) ;
|
---|
626 | Int irow = 0 ;
|
---|
627 | for ( Int iy = 0 ; iy < ny_ ; iy++ ) {
|
---|
628 | for ( Int ix = 0 ; ix < nx_ ; ix++ ) {
|
---|
629 | for ( Int ipol = 0 ; ipol < npol ; ipol++ ) {
|
---|
630 | IPosition start( 4, ix, iy, ipol, 0 ) ;
|
---|
631 | IPosition end( 4, ix, iy, ipol, nchan-1 ) ;
|
---|
632 | IPosition inc( 4, 1, 1, 1, 1 ) ;
|
---|
633 | Vector<Float> sp = data_( start, end, inc ) ;
|
---|
634 | dir(0) = center_(0) - ( cpix(0) - (Double)ix ) * cellx_ ;
|
---|
635 | dir(1) = center_(1) - ( cpix(1) - (Double)iy ) * celly_ ;
|
---|
636 | spectraCol.put( irow, sp ) ;
|
---|
637 | directionCol.put( irow, dir ) ;
|
---|
638 | polnoCol.put( irow, pollist_[ipol] ) ;
|
---|
639 | irow++ ;
|
---|
640 | }
|
---|
641 | }
|
---|
642 | }
|
---|
643 | //cout << "outfile_=" << outfile_ << endl ;
|
---|
644 | out->makePersistent( outfile_ ) ;
|
---|
645 |
|
---|
646 | return outfile_ ;
|
---|
647 | }
|
---|
648 |
|
---|
649 | }
|
---|