[2356] | 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/ScalarColumn.h> |
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| 16 | #include <tables/Tables/ArrayColumn.h> |
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| 17 | |
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| 18 | #include <measures/Measures/MDirection.h> |
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| 19 | |
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| 20 | #include <Scantable.h> |
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| 21 | #include "STGrid.h" |
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| 22 | |
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| 23 | using namespace std ; |
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| 24 | using namespace casa ; |
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| 25 | using namespace asap ; |
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| 26 | |
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| 27 | namespace asap { |
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| 28 | |
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| 29 | // constructor |
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| 30 | STGrid::STGrid() |
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| 31 | { |
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| 32 | init() ; |
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| 33 | } |
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| 34 | |
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| 35 | STGrid::STGrid( const string infile ) |
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| 36 | { |
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| 37 | init() ; |
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| 38 | |
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| 39 | setFileIn( infile ) ; |
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| 40 | } |
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| 41 | |
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| 42 | void STGrid::init() |
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| 43 | { |
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| 44 | nx_ = -1 ; |
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| 45 | ny_ = -1 ; |
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| 46 | cellx_ = 0.0 ; |
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| 47 | celly_ = 0.0 ; |
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| 48 | center_ = Vector<Double> ( 2, 0.0 ) ; |
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| 49 | convType_ = "BOX" ; |
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| 50 | convSupport_ = -1 ; |
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| 51 | userSupport_ = -1 ; |
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| 52 | convSampling_ = 100 ; |
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| 53 | } |
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| 54 | |
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| 55 | void STGrid::setFileIn( const string infile ) |
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| 56 | { |
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| 57 | String name( infile ) ; |
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| 58 | if ( infile_.compare( name ) != 0 ) { |
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| 59 | infile_ = String( infile ) ; |
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| 60 | tab_ = Table( infile_ ) ; |
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| 61 | } |
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| 62 | } |
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| 63 | |
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| 64 | void STGrid::defineImage( int nx, |
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| 65 | int ny, |
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| 66 | string scellx, |
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| 67 | string scelly, |
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| 68 | string scenter ) |
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| 69 | { |
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| 70 | ROArrayColumn<Double> dirCol( tab_, "DIRECTION" ) ; |
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| 71 | Matrix<Double> direction = dirCol.getColumn() ; |
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| 72 | Double rmax, rmin, dmax, dmin ; |
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| 73 | minMax( rmin, rmax, direction.row( 0 ) ) ; |
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| 74 | minMax( dmin, dmax, direction.row( 1 ) ) ; |
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| 75 | |
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| 76 | Int npx = (Int)nx ; |
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| 77 | Int npy = (Int)ny ; |
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| 78 | String cellx( scellx ) ; |
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| 79 | String celly( scelly ) ; |
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| 80 | String center( scenter ) ; |
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| 81 | setupGrid( npx, npy, |
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| 82 | cellx, celly, |
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| 83 | rmin, rmax, |
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| 84 | dmin, dmax, |
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| 85 | center ) ; |
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| 86 | } |
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| 87 | |
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| 88 | void STGrid::setOption( string convType, |
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| 89 | int convSupport ) |
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| 90 | { |
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| 91 | convType_ = String( convType ) ; |
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| 92 | convType_.upcase() ; |
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| 93 | userSupport_ = (Int)convSupport ; |
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| 94 | } |
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| 95 | |
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| 96 | #define NEED_UNDERSCORES |
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| 97 | #if defined(NEED_UNDERSCORES) |
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| 98 | #define ggridsd ggridsd_ |
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| 99 | #endif |
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| 100 | extern "C" { |
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| 101 | void ggridsd(Double*, |
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| 102 | const Complex*, |
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| 103 | Int*, |
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| 104 | Int*, |
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| 105 | Int*, |
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| 106 | const Int*, |
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| 107 | const Int*, |
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| 108 | const Float*, |
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| 109 | Int*, |
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| 110 | Int*, |
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| 111 | Complex*, |
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| 112 | Float*, |
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| 113 | Int*, |
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| 114 | Int*, |
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| 115 | Int *, |
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| 116 | Int *, |
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| 117 | Int*, |
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| 118 | Int*, |
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| 119 | Float*, |
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| 120 | Int*, |
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| 121 | Int*, |
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| 122 | Double*); |
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| 123 | } |
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| 124 | void STGrid::grid() |
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| 125 | { |
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| 126 | |
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| 127 | // retrieve data |
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| 128 | Matrix<Float> spectra ; |
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| 129 | Matrix<Double> direction ; |
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| 130 | Matrix<uChar> flagtra ; |
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| 131 | Vector<uInt> rflag ; |
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| 132 | getData( infile_, spectra, direction, flagtra, rflag ) ; |
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| 133 | IPosition sshape = spectra.shape() ; |
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| 134 | Int nchan = sshape[0] ; |
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| 135 | Int nrow = sshape[1] ; |
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| 136 | //cout << "data.shape()=" << data.shape() << endl ; |
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| 137 | |
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| 138 | // flagtra: uChar -> Int |
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| 139 | // rflag: uInt -> Int |
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| 140 | Matrix<Int> flagI ; |
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| 141 | Vector<Int> rflagI ; |
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| 142 | toInt( flagtra, flagI ) ; |
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| 143 | toInt( rflag, rflagI ) ; |
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| 144 | |
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| 145 | //cout << "flagI.shape() = " << flagI.shape() << endl ; |
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| 146 | //cout << "rflagI.shape() = " << rflagI.shape() << endl ; |
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| 147 | |
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| 148 | // grid parameter |
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| 149 | cout << "----------" << endl ; |
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| 150 | cout << "Grid parameter summary" << endl ; |
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| 151 | cout << " (nx,ny) = (" << nx_ << "," << ny_ << ")" << endl ; |
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| 152 | cout << " (cellx,celly) = (" << cellx_ << "," << celly_ << ")" << endl ; |
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| 153 | cout << " center = " << center_ << endl ; |
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| 154 | cout << "----------" << endl ; |
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| 155 | |
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| 156 | // world -> pixel |
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| 157 | Matrix<Double> xypos( direction.shape(), 0.0 ) ; |
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| 158 | toPixel( direction, xypos ) ; |
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| 159 | //cout << "max(xypos.row(0))=" << max(xypos.row(0)) << endl ; |
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| 160 | //cout << "min(xypos.row(0))=" << min(xypos.row(0)) << endl ; |
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| 161 | //cout << "max(xypos.row(1))=" << max(xypos.row(1)) << endl ; |
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| 162 | //cout << "min(xypos.row(1))=" << min(xypos.row(1)) << endl ; |
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| 163 | // for ( Int irow = 0 ; irow < nrow ; irow++ ) { |
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| 164 | // cout << irow << ": xypos=" << xypos.column( irow ) |
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| 165 | // << " data = " << spectra.column( irow ) << endl ; |
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| 166 | // } |
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| 167 | |
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| 168 | // convolution kernel |
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| 169 | Vector<Float> convFunc ; |
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| 170 | setConvFunc( convFunc ) ; |
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| 171 | //cout << "convSupport=" << convSupport_ << endl ; |
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| 172 | //cout << "convFunc=" << convFunc << endl ; |
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| 173 | |
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| 174 | // weighting factor |
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| 175 | Matrix<Float> weight( IPosition( 2, nchan, nrow ), 1.0 ) ; |
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| 176 | |
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| 177 | // call ggridsd |
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| 178 | Bool deletePos, deleteData, deleteWgt, deleteFlag, deleteFlagR, deleteConv, deleteDataG, deleteWgtG ; |
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| 179 | Double *xypos_p = xypos.getStorage( deletePos ) ; |
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| 180 | Matrix<Complex> dataC( spectra.shape(), 0.0 ) ; |
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| 181 | setReal( dataC, spectra ) ; |
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| 182 | const Complex *data_p = dataC.getStorage( deleteData ) ; |
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| 183 | const Float *wgt_p = weight.getStorage( deleteWgt ) ; |
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| 184 | const Int *flag_p = flagI.getStorage( deleteFlag ) ; |
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| 185 | const Int *rflag_p = rflagI.getStorage( deleteFlagR ) ; |
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| 186 | Float *conv_p = convFunc.getStorage( deleteConv ) ; |
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| 187 | Int npol = 1 ; |
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| 188 | IPosition gshape( 4, nx_, ny_, npol, nchan ) ; |
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| 189 | Array<Complex> gdataArrC( gshape, 0.0 ) ; |
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| 190 | Array<Float> gwgtArr( gshape, 0.0 ) ; |
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| 191 | Complex *gdata_p = gdataArrC.getStorage( deleteDataG ) ; |
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| 192 | Float *wdata_p = gwgtArr.getStorage( deleteWgtG ) ; |
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| 193 | Int idopsf = 0 ; |
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| 194 | Int irow = -1 ; |
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| 195 | Int *chanMap = new Int[nchan] ; |
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| 196 | { |
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| 197 | Int *work_p = chanMap ; |
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| 198 | for ( Int i = 0 ; i < nchan ; i++ ) { |
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| 199 | *work_p = i ; |
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| 200 | work_p++ ; |
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| 201 | } |
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| 202 | } |
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| 203 | Int *polMap = new Int[npol] ; |
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| 204 | { |
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| 205 | Int *work_p = polMap ; |
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| 206 | for ( Int i = 0 ; i < npol ; i++ ) { |
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| 207 | *work_p = i ; |
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| 208 | work_p++ ; |
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| 209 | } |
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| 210 | } |
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| 211 | Double *sumw_p = new Double[npol*nchan] ; |
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| 212 | { |
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| 213 | Double *work_p = sumw_p ; |
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| 214 | for ( Int i = 0 ; i < npol*nchan ; i++ ) { |
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| 215 | *work_p = 0.0 ; |
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| 216 | work_p++ ; |
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| 217 | } |
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| 218 | } |
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| 219 | ggridsd( xypos_p, |
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| 220 | data_p, |
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| 221 | &npol, |
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| 222 | &nchan, |
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| 223 | &idopsf, |
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| 224 | flag_p, |
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| 225 | rflag_p, |
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| 226 | wgt_p, |
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| 227 | &nrow, |
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| 228 | &irow, |
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| 229 | gdata_p, |
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| 230 | wdata_p, |
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| 231 | &nx_, |
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| 232 | &ny_, |
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| 233 | &npol, |
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| 234 | &nchan, |
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| 235 | &convSupport_, |
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| 236 | &convSampling_, |
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| 237 | conv_p, |
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| 238 | chanMap, |
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| 239 | polMap, |
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| 240 | sumw_p ) ; |
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| 241 | xypos.putStorage( xypos_p, deletePos ) ; |
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| 242 | dataC.freeStorage( data_p, deleteData ) ; |
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| 243 | weight.freeStorage( wgt_p, deleteWgt ) ; |
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| 244 | flagI.freeStorage( flag_p, deleteFlag ) ; |
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| 245 | rflagI.freeStorage( rflag_p, deleteFlagR ) ; |
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| 246 | convFunc.putStorage( conv_p, deleteConv ) ; |
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| 247 | delete polMap ; |
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| 248 | delete chanMap ; |
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| 249 | gdataArrC.putStorage( gdata_p, deleteDataG ) ; |
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| 250 | gwgtArr.putStorage( wdata_p, deleteWgtG ) ; |
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| 251 | Array<Float> gdataArr = real( gdataArrC ) ; |
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| 252 | //Array<Float> gdataArrN( gdataArr.shape(), 0.0 ) ; |
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| 253 | data_.resize( gdataArr.shape() ) ; |
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| 254 | data_ = 0.0 ; |
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| 255 | for ( Int ix = 0 ; ix < nx_ ; ix++ ) { |
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| 256 | for ( Int iy = 0 ; iy < ny_ ; iy++ ) { |
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| 257 | for ( Int ip = 0 ; ip < npol ; ip++ ) { |
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| 258 | for ( Int ic = 0 ; ic < nchan ; ic++ ) { |
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| 259 | IPosition pos( 4, ix, iy, ip, ic ) ; |
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| 260 | if ( gwgtArr( pos ) > 0.0 ) |
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| 261 | //gdataArrN( pos ) = gdataArr( pos ) / gwgtArr( pos ) ; |
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| 262 | data_( pos ) = gdataArr( pos ) / gwgtArr( pos ) ; |
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| 263 | } |
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| 264 | } |
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| 265 | } |
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| 266 | } |
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| 267 | Matrix<Double> sumWeight( IPosition( 2, npol, nchan ), sumw_p, TAKE_OVER ) ; |
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| 268 | //cout << "sumWeight = " << sumWeight << endl ; |
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| 269 | //cout << "gdataArr = " << gdataArr << endl ; |
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| 270 | //cout << "gwgtArr = " << gwgtArr << endl ; |
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| 271 | //cout << "gdataArr/gwgtArr = " << gdataArrN << endl ; |
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| 272 | } |
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| 273 | |
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| 274 | void STGrid::setupGrid( Int &nx, |
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| 275 | Int &ny, |
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| 276 | String &cellx, |
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| 277 | String &celly, |
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| 278 | Double &xmin, |
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| 279 | Double &xmax, |
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| 280 | Double &ymin, |
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| 281 | Double &ymax, |
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| 282 | String ¢er ) |
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| 283 | { |
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| 284 | //cout << "nx=" << nx << ", ny=" << ny << endl ; |
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| 285 | Double wx = xmax - xmin ; |
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| 286 | Double wy = ymax - ymin ; |
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| 287 | // take some margin |
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| 288 | wx *= 1.10 ; |
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| 289 | wy *= 1.10 ; |
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| 290 | Quantum<Double> qcellx ; |
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| 291 | Quantum<Double> qcelly ; |
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| 292 | nx_ = nx ; |
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| 293 | ny_ = ny ; |
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| 294 | if ( nx < 0 && ny > 0 ) { |
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| 295 | nx_ = ny ; |
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| 296 | ny_ = ny ; |
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| 297 | } |
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| 298 | if ( ny < 0 && nx > 0 ) { |
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| 299 | nx_ = nx ; |
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| 300 | ny_ = nx ; |
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| 301 | } |
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| 302 | //cout << "nx_ = " << nx_ << ", ny_ = " << ny_ << endl ; |
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| 303 | if ( cellx.size() != 0 && celly.size() != 0 ) { |
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| 304 | readQuantity( qcellx, cellx ) ; |
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| 305 | readQuantity( qcelly, celly ) ; |
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| 306 | } |
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| 307 | else if ( celly.size() != 0 ) { |
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| 308 | cout << "Using celly to x-axis..." << endl ; |
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| 309 | readQuantity( qcelly, celly ) ; |
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| 310 | qcellx = qcelly ; |
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| 311 | } |
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| 312 | else if ( cellx.size() != 0 ) { |
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| 313 | cout << "Using cellx to y-axis..." << endl ; |
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| 314 | readQuantity( qcellx, cellx ) ; |
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| 315 | qcelly = qcellx ; |
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| 316 | } |
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| 317 | else { |
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| 318 | if ( nx_ < 0 ) { |
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| 319 | cout << "No user preference in grid setting. Using default..." << endl ; |
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| 320 | readQuantity( qcellx, "1.0arcmin" ) ; |
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| 321 | qcelly = qcellx ; |
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| 322 | } |
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| 323 | else { |
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| 324 | qcellx = Quantum<Double>( wx/nx_, "rad" ) ; |
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| 325 | qcelly = Quantum<Double>( wy/ny_, "rad" ) ; |
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| 326 | } |
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| 327 | } |
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| 328 | cellx_ = qcellx.getValue( "rad" ) ; |
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| 329 | celly_ = qcelly.getValue( "rad" ) ; |
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| 330 | if ( nx_ < 0 ) { |
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| 331 | nx_ = Int( ceil( wx/cellx_ ) ) ; |
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| 332 | ny_ = Int( ceil( wy/celly_ ) ) ; |
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| 333 | } |
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| 334 | |
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| 335 | if ( center.size() == 0 ) { |
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| 336 | center_(0) = 0.5 * ( xmin + xmax ) ; |
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| 337 | center_(1) = 0.5 * ( ymin + ymax ) ; |
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| 338 | } |
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| 339 | else { |
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| 340 | String::size_type pos0 = center.find( " " ) ; |
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| 341 | if ( pos0 == String::npos ) { |
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| 342 | throw AipsError( "bad string format in parameter center" ) ; |
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| 343 | } |
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| 344 | String::size_type pos1 = center.find( " ", pos0+1 ) ; |
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| 345 | String typestr, xstr, ystr ; |
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| 346 | if ( pos1 != String::npos ) { |
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| 347 | typestr = center.substr( 0, pos0 ) ; |
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| 348 | xstr = center.substr( pos0+1, pos1-pos0 ) ; |
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| 349 | ystr = center.substr( pos1+1 ) ; |
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| 350 | // todo: convert to J2000 (or direction ref for DIRECTION column) |
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| 351 | } |
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| 352 | else { |
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| 353 | typestr = "J2000" ; |
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| 354 | xstr = center.substr( 0, pos0 ) ; |
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| 355 | ystr = center.substr( pos0+1 ) ; |
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| 356 | } |
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| 357 | QuantumHolder qh ; |
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| 358 | String err ; |
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| 359 | qh.fromString( err, xstr ) ; |
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| 360 | Quantum<Double> xcen = qh.asQuantumDouble() ; |
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| 361 | qh.fromString( err, ystr ) ; |
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| 362 | Quantum<Double> ycen = qh.asQuantumDouble() ; |
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| 363 | center_(0) = xcen.getValue( "rad" ) ; |
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| 364 | center_(1) = ycen.getValue( "rad" ) ; |
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| 365 | } |
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| 366 | } |
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| 367 | |
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| 368 | void STGrid::getData( String &infile, |
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| 369 | Matrix<Float> &spectra, |
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| 370 | Matrix<Double> &direction, |
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| 371 | Matrix<uChar> &flagtra, |
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| 372 | Vector<uInt> &rflag ) |
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| 373 | { |
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| 374 | Table tab( infile ) ; |
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| 375 | ROArrayColumn<Float> spectraCol( tab, "SPECTRA" ) ; |
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| 376 | ROArrayColumn<Double> directionCol( tab, "DIRECTION" ) ; |
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| 377 | ROArrayColumn<uChar> flagtraCol( tab, "FLAGTRA" ) ; |
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| 378 | ROScalarColumn<uInt> rflagCol( tab, "FLAGROW" ) ; |
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| 379 | spectraCol.getColumn( spectra ) ; |
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| 380 | directionCol.getColumn( direction ) ; |
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| 381 | flagtraCol.getColumn( flagtra ) ; |
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| 382 | rflagCol.getColumn( rflag ) ; |
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| 383 | } |
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| 384 | |
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| 385 | void STGrid::toInt( Matrix<uChar> &u, Matrix<Int> &v ) |
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| 386 | { |
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| 387 | uInt len = u.nelements() ; |
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| 388 | Int *int_p = new Int[len] ; |
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| 389 | Bool deleteIt ; |
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| 390 | const uChar *data_p = u.getStorage( deleteIt ) ; |
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| 391 | Int *i_p = int_p ; |
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| 392 | const uChar *u_p = data_p ; |
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| 393 | for ( uInt i = 0 ; i < len ; i++ ) { |
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| 394 | *i_p = ( *u_p == 0 ) ? 0 : 1 ; |
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| 395 | i_p++ ; |
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| 396 | u_p++ ; |
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| 397 | } |
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| 398 | u.freeStorage( data_p, deleteIt ) ; |
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| 399 | v.takeStorage( u.shape(), int_p, TAKE_OVER ) ; |
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| 400 | } |
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| 401 | |
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| 402 | void STGrid::toInt( Vector<uInt> &u, Vector<Int> &v ) |
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| 403 | { |
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| 404 | uInt len = u.nelements() ; |
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| 405 | Int *int_p = new Int[len] ; |
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| 406 | Bool deleteIt ; |
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| 407 | const uInt *data_p = u.getStorage( deleteIt ) ; |
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| 408 | Int *i_p = int_p ; |
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| 409 | const uInt *u_p = data_p ; |
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| 410 | for ( uInt i = 0 ; i < len ; i++ ) { |
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| 411 | *i_p = ( *u_p == 0 ) ? 0 : 1 ; |
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| 412 | i_p++ ; |
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| 413 | u_p++ ; |
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| 414 | } |
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| 415 | u.freeStorage( data_p, deleteIt ) ; |
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| 416 | v.takeStorage( u.shape(), int_p, TAKE_OVER ) ; |
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| 417 | } |
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| 418 | |
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| 419 | void STGrid::toPixel( Matrix<Double> &world, Matrix<Double> &pixel ) |
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| 420 | { |
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| 421 | Vector<Double> pixc( 2 ) ; |
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| 422 | pixc(0) = Double( nx_-1 ) * 0.5 ; |
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| 423 | pixc(1) = Double( ny_-1 ) * 0.5 ; |
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| 424 | uInt nrow = world.shape()[1] ; |
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| 425 | Vector<Double> cell( 2 ) ; |
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| 426 | cell(0) = cellx_ ; |
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| 427 | cell(1) = celly_ ; |
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| 428 | //ofstream ofs( "grid.dat", ios::out ) ; |
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| 429 | for ( uInt irow = 0 ; irow < nrow ; irow++ ) { |
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| 430 | //ofs << irow ; |
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| 431 | for ( uInt i = 0 ; i < 2 ; i++ ) { |
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| 432 | pixel( i, irow ) = pixc(i) + ( world(i, irow) - center_(i) ) / cell(i) ; |
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| 433 | //ofs << " " << world(i, irow) << " " << pixel(i, irow) ; |
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| 434 | } |
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| 435 | //ofs << endl ; |
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| 436 | } |
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| 437 | //ofs.close() ; |
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| 438 | } |
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| 439 | |
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| 440 | void STGrid::boxFunc( Vector<Float> &convFunc, Int &convSize ) |
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| 441 | { |
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| 442 | convFunc = 0.0 ; |
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| 443 | for ( Int i = 0 ; i < convSize/2 ; i++ ) |
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| 444 | convFunc(i) = 1.0 ; |
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| 445 | } |
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| 446 | |
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| 447 | #define NEED_UNDERSCORES |
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| 448 | #if defined(NEED_UNDERSCORES) |
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| 449 | #define grdsf grdsf_ |
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| 450 | #endif |
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| 451 | extern "C" { |
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| 452 | void grdsf(Double*, Double*); |
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| 453 | } |
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| 454 | void STGrid::spheroidalFunc( Vector<Float> &convFunc ) |
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| 455 | { |
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| 456 | convFunc = 0.0 ; |
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| 457 | for ( Int i = 0 ; i < convSampling_*convSupport_ ; i++ ) { |
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| 458 | Double nu = Double(i) / Double(convSupport_*convSampling_) ; |
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| 459 | Double val ; |
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| 460 | grdsf( &nu, &val ) ; |
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| 461 | convFunc(i) = ( 1.0 - nu * nu ) * val ; |
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| 462 | } |
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| 463 | } |
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| 464 | |
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| 465 | void STGrid::gaussFunc( Vector<Float> &convFunc ) |
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| 466 | { |
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| 467 | convFunc = 0.0 ; |
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| 468 | for ( Int i = 0 ; i < convSampling_*convSupport_ ; i++ ) { |
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| 469 | Double hwhm = convSampling_ * convSupport_ * 0.25 ; |
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| 470 | Double val = Double(i) / hwhm ; |
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| 471 | convFunc(i) = exp( -log(2)*val*val ) ; |
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| 472 | } |
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| 473 | } |
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| 474 | |
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| 475 | void STGrid::pbFunc( Vector<Float> &convFunc ) |
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| 476 | { |
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| 477 | convFunc = 0.0 ; |
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| 478 | } |
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| 479 | |
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| 480 | void STGrid::setConvFunc( Vector<Float> &convFunc ) |
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| 481 | { |
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| 482 | convSupport_ = userSupport_ ; |
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| 483 | if ( convType_ == "BOX" ) { |
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| 484 | if ( convSupport_ < 0 ) |
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| 485 | convSupport_ = 0 ; |
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| 486 | Int convSize = convSampling_ * ( 2 * convSupport_ + 2 ) ; |
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| 487 | convFunc.resize( convSize ) ; |
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| 488 | boxFunc( convFunc, convSize ) ; |
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| 489 | } |
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| 490 | else if ( convType_ == "SF" ) { |
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| 491 | if ( convSupport_ < 0 ) |
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| 492 | convSupport_ = 3 ; |
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| 493 | Int convSize = convSampling_ * ( 2 * convSupport_ + 2 ) ; |
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| 494 | convFunc.resize( convSize ) ; |
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| 495 | spheroidalFunc( convFunc ) ; |
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| 496 | } |
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| 497 | else if ( convType_ == "GAUSS" ) { |
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| 498 | if ( convSupport_ < 0 ) |
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| 499 | convSupport_ = 3 ; |
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| 500 | Int convSize = convSampling_ * ( 2 * convSupport_ + 2 ) ; |
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| 501 | convFunc.resize( convSize ) ; |
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| 502 | gaussFunc( convFunc ) ; |
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| 503 | } |
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| 504 | else if ( convType_ == "PB" ) |
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| 505 | pbFunc( convFunc ) ; |
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| 506 | else { |
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| 507 | throw AipsError( "Unsupported convolution function" ) ; |
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| 508 | } |
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| 509 | } |
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| 510 | |
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| 511 | string STGrid::saveData( string outfile ) |
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| 512 | { |
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| 513 | Int polno = 0 ; |
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| 514 | string outfile_ ; |
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| 515 | if ( outfile.size() == 0 ) { |
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| 516 | if ( infile_.lastchar() == '/' ) { |
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| 517 | outfile_ = infile_.substr( 0, infile_.size()-1 ) ; |
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| 518 | } |
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| 519 | else { |
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| 520 | outfile_ = infile_ ; |
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| 521 | } |
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| 522 | outfile_ += ".grid" ; |
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| 523 | } |
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| 524 | else { |
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| 525 | outfile_ = outfile ; |
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| 526 | } |
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| 527 | CountedPtr<Scantable> ref( new Scantable( infile_, Table::Memory ) ) ; |
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| 528 | //cout << "ref->nchan()=" << ref->nchan() << endl ; |
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| 529 | CountedPtr<Scantable> out( new Scantable( *ref, True ) ) ; |
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| 530 | Table tab = out->table() ; |
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| 531 | Int nrow = nx_ * ny_ ; |
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| 532 | tab.addRow( nrow ) ; |
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| 533 | IPosition dshape = data_.shape() ; |
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| 534 | Int npol = dshape[2] ; |
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| 535 | Int nchan = dshape[3] ; |
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| 536 | Vector<Double> cpix( 2 ) ; |
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| 537 | cpix(0) = Double( nx_ - 1 ) * 0.5 ; |
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| 538 | cpix(1) = Double( ny_ - 1 ) * 0.5 ; |
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| 539 | Vector<Double> dir( 2 ) ; |
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| 540 | ArrayColumn<Double> directionCol( tab, "DIRECTION" ) ; |
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| 541 | ArrayColumn<Float> spectraCol( tab, "SPECTRA" ) ; |
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| 542 | ScalarColumn<uInt> polnoCol( tab, "POLNO" ) ; |
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| 543 | Int irow = 0 ; |
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| 544 | for ( Int iy = 0 ; iy < ny_ ; iy++ ) { |
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| 545 | for ( Int ix = 0 ; ix < nx_ ; ix++ ) { |
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| 546 | for ( Int ipol = 0 ; ipol < npol ; ipol++ ) { |
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| 547 | IPosition start( 4, ix, iy, ipol, 0 ) ; |
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| 548 | IPosition end( 4, ix, iy, ipol, nchan-1 ) ; |
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| 549 | IPosition inc( 4, 1, 1, 1, 1 ) ; |
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| 550 | Vector<Float> sp = data_( start, end, inc ) ; |
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| 551 | dir(0) = center_(0) - ( cpix(0) - (Double)ix ) * cellx_ ; |
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| 552 | dir(1) = center_(1) - ( cpix(1) - (Double)iy ) * celly_ ; |
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| 553 | spectraCol.put( irow, sp ) ; |
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| 554 | directionCol.put( irow, dir ) ; |
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| 555 | polnoCol.put( irow, polno ) ; |
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| 556 | irow++ ; |
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| 557 | } |
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| 558 | } |
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| 559 | } |
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| 560 | //cout << "outfile_=" << outfile_ << endl ; |
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| 561 | out->makePersistent( outfile_ ) ; |
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| 562 | |
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| 563 | return outfile_ ; |
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| 564 | } |
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| 565 | |
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| 566 | } |
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