1 | //#--------------------------------------------------------------------------- |
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2 | //# GBTFITSreader.cc: interface class for GBT SDFITS input using CFITSIO. |
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3 | //#--------------------------------------------------------------------------- |
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4 | //# livedata - processing pipeline for single-dish, multibeam spectral data. |
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5 | //# Copyright (C) 2000-2009, Australia Telescope National Facility, CSIRO |
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6 | //# |
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7 | //# This file is part of livedata. |
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8 | //# |
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9 | //# livedata is free software: you can redistribute it and/or modify it under |
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10 | //# the terms of the GNU General Public License as published by the Free |
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11 | //# Software Foundation, either version 3 of the License, or (at your option) |
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12 | //# any later version. |
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13 | //# |
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14 | //# livedata is distributed in the hope that it will be useful, but WITHOUT |
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15 | //# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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16 | //# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
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17 | //# more details. |
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18 | //# |
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19 | //# You should have received a copy of the GNU General Public License along |
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20 | //# with livedata. If not, see <http://www.gnu.org/licenses/>. |
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21 | //# |
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22 | //# Correspondence concerning livedata may be directed to: |
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23 | //# Internet email: mcalabre@atnf.csiro.au |
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24 | //# Postal address: Dr. Mark Calabretta |
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25 | //# Australia Telescope National Facility, CSIRO |
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26 | //# PO Box 76 |
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27 | //# Epping NSW 1710 |
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28 | //# AUSTRALIA |
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29 | //# |
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30 | //# http://www.atnf.csiro.au/computing/software/livedata.html |
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31 | //# $Id: SDFITSreader.cc,v 19.45 2009-09-30 07:23:48 cal103 Exp $ |
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32 | //#--------------------------------------------------------------------------- |
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33 | //# The GBTFITSreader class reads single dish FITS files from Green Bank |
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34 | //# telescopes. This class is actually a specific version of SDFITSreader. |
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35 | //# |
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36 | //# Original: 2000/08/09, Mark Calabretta, ATNF |
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37 | //# Update: 2010/07/29, Takeshi Nakazato, NAOJ |
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38 | //#--------------------------------------------------------------------------- |
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39 | |
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40 | #include <atnf/pks/pks_maths.h> |
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41 | #include <atnf/PKSIO/MBrecord.h> |
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42 | #include <atnf/PKSIO/GBTFITSreader.h> |
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43 | #include <atnf/PKSIO/SrcType.h> |
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44 | |
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45 | #include <measures/Measures/MeasConvert.h> |
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46 | #include <measures/Measures/MCFrequency.h> |
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47 | #include <measures/Measures/MFrequency.h> |
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48 | #include <measures/Measures/MPosition.h> |
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49 | #include <measures/Measures/MEpoch.h> |
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50 | #include <measures/Measures/MDirection.h> |
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51 | |
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52 | #include <casa/Logging/LogIO.h> |
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53 | #include <casa/Quanta/MVTime.h> |
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54 | #include <casa/math.h> |
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55 | #include <casa/stdio.h> |
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56 | |
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57 | #include <algorithm> |
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58 | #include <strings.h> |
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59 | #include <cstring> |
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60 | |
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61 | class FITSparm |
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62 | { |
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63 | public: |
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64 | char *name; // Keyword or column name. |
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65 | int type; // Expected keyvalue or column data type. |
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66 | int colnum; // Column number; 0 for keyword; -1 absent. |
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67 | int coltype; // Column data type, as found. |
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68 | long nelem; // Column data repeat count; < 0 for vardim. |
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69 | int tdimcol; // TDIM column number; 0 for keyword; -1 absent. |
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70 | char units[32]; // Units from TUNITn keyword. |
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71 | }; |
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72 | |
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73 | // Numerical constants. |
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74 | const double PI = 3.141592653589793238462643; |
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75 | |
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76 | // Factor to convert radians to degrees. |
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77 | const double D2R = PI / 180.0; |
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78 | |
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79 | // Class name |
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80 | const string className = "GBTFITSreader" ; |
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81 | |
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82 | //---------------------------------------------------- GBTFITSreader::(statics) |
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83 | |
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84 | int GBTFITSreader::sInit = 1; |
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85 | int GBTFITSreader::sReset = 0; |
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86 | int (*GBTFITSreader::sALFAcalNon)[2] = (int (*)[2])(new float[16]); |
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87 | int (*GBTFITSreader::sALFAcalNoff)[2] = (int (*)[2])(new float[16]); |
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88 | float (*GBTFITSreader::sALFAcalOn)[2] = (float (*)[2])(new float[16]); |
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89 | float (*GBTFITSreader::sALFAcalOff)[2] = (float (*)[2])(new float[16]); |
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90 | float (*GBTFITSreader::sALFAcal)[2] = (float (*)[2])(new float[16]); |
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91 | |
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92 | //------------------------------------------------- GBTFITSreader::GBTFITSreader |
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93 | |
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94 | GBTFITSreader::GBTFITSreader() |
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95 | { |
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96 | // Default constructor. |
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97 | cSDptr = 0x0; |
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98 | |
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99 | // Allocate space for data descriptors. |
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100 | cData = new FITSparm[NDATA]; |
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101 | |
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102 | for (int iData = 0; iData < NDATA; iData++) { |
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103 | cData[iData].colnum = -1; |
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104 | } |
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105 | |
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106 | // Initialize pointers. |
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107 | cBeams = 0x0; |
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108 | cIFs = 0x0; |
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109 | cStartChan = 0x0; |
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110 | cEndChan = 0x0; |
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111 | cRefChan = 0x0; |
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112 | cPols = 0x0; |
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113 | |
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114 | // other initialization |
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115 | numHDU = 0 ; |
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116 | |
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117 | } |
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118 | |
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119 | //------------------------------------------------ GBTFITSreader::~GBTFITSreader |
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120 | |
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121 | GBTFITSreader::~GBTFITSreader() |
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122 | { |
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123 | close(); |
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124 | |
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125 | delete [] cData; |
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126 | } |
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127 | |
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128 | //--------------------------------------------------------- GBTFITSreader::open |
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129 | |
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130 | // Open an SDFITS file for reading. |
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131 | |
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132 | int GBTFITSreader::open( |
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133 | char* sdName, |
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134 | int &nBeam, |
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135 | int* &beams, |
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136 | int &nIF, |
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137 | int* &IFs, |
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138 | int* &nChan, |
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139 | int* &nPol, |
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140 | int* &haveXPol, |
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141 | int &haveBase, |
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142 | int &haveSpectra, |
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143 | int &extraSysCal) |
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144 | { |
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145 | const string methodName = "open()" ; |
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146 | |
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147 | if (cSDptr) { |
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148 | close(); |
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149 | } |
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150 | |
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151 | // Open the SDFITS file. |
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152 | cStatus = 0; |
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153 | if (fits_open_file(&cSDptr, sdName, READONLY, &cStatus)) { |
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154 | sprintf(cMsg, "ERROR: Failed to open SDFITS file\n %s", sdName); |
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155 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE, cMsg); |
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156 | return 1; |
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157 | } |
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158 | |
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159 | // Get number of HDUs in the file |
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160 | if ( fits_get_num_hdus( cSDptr, &numHDU, &cStatus ) ) { |
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161 | sprintf(cMsg, "ERROR: Failed to get number of HDUs in the file\n %s", sdName ); |
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162 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE, cMsg) ; |
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163 | return 1 ; |
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164 | } |
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165 | // ignore Primary HDU |
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166 | numHDU = numHDU - 1 ; |
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167 | sprintf(cMsg, "number of HDUs = %d", numHDU) ; |
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168 | log( LogOrigin( className, methodName, WHERE ), LogIO::DEBUGGING, cMsg ) ; |
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169 | |
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170 | // Move to the SDFITS extension. |
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171 | cALFA = cALFA_BD = cALFA_CIMA = 0; |
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172 | char *extName = (char *)"SINGLE DISH" ; |
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173 | if (fits_movnam_hdu(cSDptr, BINARY_TBL, extName, 0, &cStatus)) { |
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174 | // No SDFITS table, look for BDFITS or CIMAFITS. |
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175 | cStatus = 0; |
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176 | if (fits_movnam_hdu(cSDptr, BINARY_TBL, (char *)"BDFITS", 0, &cStatus) == 0) { |
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177 | cALFA_BD = 1; |
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178 | extName = (char *)"BDFITS" ; |
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179 | |
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180 | } else { |
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181 | cStatus = 0; |
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182 | if (fits_movnam_hdu(cSDptr, BINARY_TBL, (char *)"CIMAFITS", 0, &cStatus) == 0) { |
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183 | cALFA_CIMA = 1; |
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184 | extName = (char *)"CIMAFITS" ; |
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185 | |
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186 | // Check for later versions of CIMAFITS. |
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187 | float version; |
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188 | readParm((char *)(char *)"VERSION", TFLOAT, &version); |
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189 | if (version >= 2.0f) cALFA_CIMA = int(version); |
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190 | |
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191 | } else { |
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192 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE, "Failed to locate SDFITS binary table."); |
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193 | close(); |
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194 | return 1; |
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195 | } |
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196 | } |
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197 | |
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198 | // Arecibo ALFA data of some kind. |
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199 | cALFA = 1; |
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200 | if (sInit) { |
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201 | for (int iBeam = 0; iBeam < 8; iBeam++) { |
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202 | for (int iPol = 0; iPol < 2; iPol++) { |
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203 | sALFAcalOn[iBeam][iPol] = 0.0f; |
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204 | sALFAcalOff[iBeam][iPol] = 0.0f; |
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205 | |
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206 | // Nominal factor to calibrate spectra in Jy. |
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207 | sALFAcal[iBeam][iPol] = 3.0f; |
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208 | } |
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209 | } |
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210 | |
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211 | sInit = 0; |
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212 | } |
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213 | } |
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214 | |
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215 | // Find the number of rows. |
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216 | cNRowT = new long[numHDU] ; |
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217 | cNRowCum = new long[numHDU] ; |
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218 | hduId = new int[numHDU] ; |
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219 | cNRow = 0 ; |
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220 | fits_movabs_hdu( cSDptr, 1, NULL, &cStatus ) ; |
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221 | for ( int i = 0 ; i < numHDU ; i++ ) { |
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222 | if ( i == 0 ) { |
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223 | fits_movnam_hdu( cSDptr, BINARY_TBL, extName, 0, &cStatus ) ; |
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224 | fits_get_hdu_num( cSDptr, &(hduId[i]) ) ; |
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225 | } |
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226 | else { |
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227 | if ( fits_movrel_hdu( cSDptr, 1, NULL, &cStatus ) ) { |
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228 | log( LogOrigin( className, methodName, WHERE), LogIO::SEVERE, "Failed to move" ) ; |
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229 | } |
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230 | fits_get_hdu_num( cSDptr, &(hduId[i]) ) ; |
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231 | } |
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232 | sprintf(cMsg, "HDU ID for %d: %d", i, hduId[i]) ; |
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233 | log( LogOrigin( className, methodName, WHERE ), LogIO::DEBUGGING, cMsg ) ; |
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234 | fits_get_num_rows( cSDptr, &cNRowT[i], &cStatus ) ; |
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235 | if (!cNRowT[i]) { |
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236 | ostringstream oss ; |
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237 | sprintf(cMsg, "Table %d contains no entries.", i ) ; |
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238 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE, cMsg); |
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239 | close(); |
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240 | return 1; |
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241 | } |
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242 | cNRow += cNRowT[i] ; |
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243 | cNRowCum[i] = cNRow ; |
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244 | sprintf(cMsg, "number of rows for HDU %d = %ld", i, cNRowT[i]) ; |
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245 | log( LogOrigin( className, methodName, WHERE ), LogIO::DEBUGGING, cMsg ) ; |
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246 | sprintf(cMsg, "cumulative number of rows for HDU %d = %ld", i, cNRowCum[i]) ; |
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247 | log( LogOrigin( className, methodName, WHERE ), LogIO::DEBUGGING, cMsg ) ; |
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248 | } |
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249 | sprintf(cMsg, "number of rows = %ld", cNRow) ; |
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250 | log( LogOrigin( className, methodName, WHERE ), LogIO::DEBUGGING, cMsg ) ; |
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251 | |
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252 | // Move back to first binary table |
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253 | fits_movabs_hdu( cSDptr, hduId[0], NULL, &cStatus ) ; |
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254 | |
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255 | ////// |
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256 | // For devlopment |
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257 | // cNRow = 0 ; |
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258 | // for ( int ihdu = 0 ; ihdu < numHDU ; ihdu++ ) { |
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259 | // //cNRowT[ihdu] = 10 ; |
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260 | // //cNRowT[ihdu] = 100 ; |
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261 | // cNRowT[ihdu] = 500 ; |
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262 | // cNRow += cNRowT[ihdu] ; |
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263 | // cNRowCum[ihdu] = cNRow ; |
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264 | // sprintf(cMsg, "number of rows for HDU %d = %ld", ihdu, cNRowT[ihdu]) ; |
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265 | // log( LogOrigin( className, methodName, WHERE ), LogIO::DEBUGGING, cMsg ) ; |
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266 | // sprintf(cMsg, "cumulative number of rows for HDU %d = %ld", ihdu, cNRowCum[ihdu]) ; |
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267 | // log( LogOrigin( className, methodName, WHERE ), LogIO::DEBUGGING, cMsg ) ; |
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268 | // } |
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269 | // sprintf(cMsg, "number of rows = %ld", cNRow) ; |
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270 | // log( LogOrigin( className, methodName, WHERE ), LogIO::DEBUGGING, cMsg ) ; |
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271 | // Original cNRow is cNRowT[0] |
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272 | // cNRow = cNRowT[0] ; |
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273 | // fits_get_num_rows(cSDptr, &cNRow, &cStatus); |
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274 | ///// |
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275 | |
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276 | if (!cNRow) { |
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277 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE, "Table contains no entries."); |
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278 | close(); |
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279 | return 1; |
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280 | } |
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281 | |
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282 | // GBT data. |
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283 | char telescope[32]; |
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284 | readParm((char *)(char *)"TELESCOP", TSTRING, telescope); // Core. |
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285 | cGBT = strncmp(telescope, "GBT", 3) == 0 || |
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286 | strncmp(telescope, "NRAO_GBT", 8) == 0; |
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287 | |
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288 | |
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289 | // Check that the DATA array column is present. |
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290 | findData(DATA, (char *)(char *)"DATA", TFLOAT); |
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291 | haveSpectra = cHaveSpectra = cData[DATA].colnum > 0; |
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292 | |
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293 | cNAxisTime = 0; |
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294 | if (cHaveSpectra) { |
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295 | // Find the number of data axes (must be the same for each IF). |
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296 | cNAxes = 5; |
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297 | if (readDim(DATA, 1, &cNAxes, cNAxis)) { |
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298 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE); |
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299 | close(); |
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300 | return 1; |
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301 | } |
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302 | |
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303 | if (cALFA_BD) { |
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304 | // ALFA BDFITS: variable length arrays don't actually vary and there is |
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305 | // no TDIM (or MAXISn) card; use the LAGS_IN value. |
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306 | cNAxes = 5; |
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307 | readParm((char *)"LAGS_IN", TLONG, cNAxis); |
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308 | cNAxis[1] = 1; |
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309 | cNAxis[2] = 1; |
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310 | cNAxis[3] = 1; |
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311 | cNAxis[4] = 1; |
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312 | cData[DATA].nelem = cNAxis[0]; |
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313 | } |
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314 | |
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315 | if (cNAxes < 4) { |
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316 | // Need at least four axes (for now). |
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317 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE, "DATA array contains fewer than four axes."); |
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318 | close(); |
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319 | return 1; |
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320 | } else if (cNAxes > 5) { |
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321 | // We support up to five axes. |
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322 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE, "DATA array contains more than five axes."); |
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323 | close(); |
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324 | return 1; |
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325 | } |
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326 | |
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327 | findData(FLAGGED, (char *)(char *)"FLAGGED", TBYTE); |
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328 | |
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329 | } else { |
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330 | // DATA column not present, check for a DATAXED keyword. |
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331 | findData(DATAXED, (char *)(char *)"DATAXED", TSTRING); |
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332 | if (cData[DATAXED].colnum < 0) { |
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333 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE, "DATA array column absent from binary table."); |
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334 | close(); |
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335 | return 1; |
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336 | } |
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337 | |
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338 | // Determine the number of axes and their length. |
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339 | char dataxed[32]; |
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340 | readParm((char *)(char *)"DATAXED", TSTRING, dataxed); |
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341 | |
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342 | for (int iaxis = 0; iaxis < 5; iaxis++) cNAxis[iaxis] = 0; |
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343 | sscanf(dataxed, "(%ld,%ld,%ld,%ld,%ld)", cNAxis, cNAxis+1, cNAxis+2, |
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344 | cNAxis+3, cNAxis+4); |
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345 | for (int iaxis = 4; iaxis > -1; iaxis--) { |
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346 | if (cNAxis[iaxis] == 0) cNAxes = iaxis; |
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347 | } |
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348 | } |
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349 | |
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350 | char *CTYPE[5] = {(char *)"CTYPE1", (char *)"CTYPE2", (char *)"CTYPE3", (char *)"CTYPE4", (char *)"CTYPE5"}; |
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351 | char *CRPIX[5] = {(char *)"CRPIX1", (char *)"CRPIX2", (char *)"CRPIX3", (char *)"CRPIX4", (char *)"CRPIX5"}; |
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352 | char *CRVAL[5] = {(char *)"CRVAL1", (char *)"CRVAL2", (char *)"CRVAL3", (char *)"CRVAL4", (char *)"CRVAL5"}; |
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353 | char *CDELT[5] = {(char *)"CDELT1", (char *)"CDELT2", (char *)"CDELT3", (char *)"CDELT4", (char *)"CDELT5"}; |
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354 | |
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355 | // Find required DATA array axes. |
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356 | char ctype[5][72]; |
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357 | for (int iaxis = 0; iaxis < cNAxes; iaxis++) { |
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358 | strcpy(ctype[iaxis], ""); |
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359 | readParm(CTYPE[iaxis], TSTRING, ctype[iaxis]); // Core. |
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360 | } |
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361 | |
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362 | if (cStatus) { |
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363 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE); |
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364 | close(); |
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365 | return 1; |
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366 | } |
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367 | |
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368 | char *fqCRVAL = 0; |
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369 | char *fqCDELT = 0; |
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370 | char *fqCRPIX = 0; |
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371 | char *raCRVAL = 0; |
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372 | char *decCRVAL = 0; |
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373 | char *timeCRVAL = 0; |
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374 | char *timeCDELT = 0; |
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375 | char *timeCRPIX = 0; |
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376 | char *beamCRVAL = 0; |
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377 | char *polCRVAL = 0; |
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378 | |
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379 | cFreqAxis = -1; |
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380 | cStokesAxis = -1; |
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381 | cRaAxis = -1; |
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382 | cDecAxis = -1; |
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383 | cTimeAxis = -1; |
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384 | cBeamAxis = -1; |
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385 | |
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386 | for (int iaxis = 0; iaxis < cNAxes; iaxis++) { |
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387 | if (strncmp(ctype[iaxis], "FREQ", 4) == 0) { |
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388 | cFreqAxis = iaxis; |
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389 | fqCRVAL = CRVAL[iaxis]; |
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390 | fqCDELT = CDELT[iaxis]; |
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391 | fqCRPIX = CRPIX[iaxis]; |
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392 | |
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393 | } else if (strncmp(ctype[iaxis], "STOKES", 6) == 0) { |
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394 | cStokesAxis = iaxis; |
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395 | polCRVAL = CRVAL[iaxis]; |
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396 | |
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397 | } else if (strncmp(ctype[iaxis], "RA", 2) == 0) { |
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398 | cRaAxis = iaxis; |
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399 | raCRVAL = CRVAL[iaxis]; |
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400 | |
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401 | } else if (strncmp(ctype[iaxis], "DEC", 3) == 0) { |
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402 | cDecAxis = iaxis; |
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403 | decCRVAL = CRVAL[iaxis]; |
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404 | |
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405 | } else if (strcmp(ctype[iaxis], "TIME") == 0) { |
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406 | // TIME (UTC seconds since midnight); axis type, if present, takes |
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407 | // precedence over keyword. |
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408 | cTimeAxis = iaxis; |
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409 | timeCRVAL = CRVAL[iaxis]; |
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410 | |
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411 | // Check for non-degeneracy. |
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412 | if ((cNAxisTime = cNAxis[iaxis]) > 1) { |
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413 | timeCDELT = CDELT[iaxis]; |
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414 | timeCRPIX = CRPIX[iaxis]; |
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415 | sprintf(cMsg, "DATA array contains a TIME axis of length %ld.", |
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416 | cNAxisTime); |
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417 | //logMsg(cMsg); |
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418 | log(LogOrigin( className, methodName, WHERE ), LogIO::NORMAL, cMsg); |
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419 | } |
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420 | |
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421 | } else if (strcmp(ctype[iaxis], "BEAM") == 0) { |
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422 | // BEAM can be a keyword or axis type. |
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423 | cBeamAxis = iaxis; |
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424 | beamCRVAL = CRVAL[iaxis]; |
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425 | } |
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426 | } |
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427 | |
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428 | if (cALFA_BD) { |
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429 | // Fixed in ALFA CIMAFITS. |
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430 | cRaAxis = 2; |
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431 | raCRVAL = (char *)"CRVAL2A"; |
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432 | |
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433 | cDecAxis = 3; |
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434 | decCRVAL = (char *)"CRVAL3A"; |
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435 | } |
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436 | |
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437 | |
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438 | // Check that required axes are present. |
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439 | if (cFreqAxis < 0 || cStokesAxis < 0 || cRaAxis < 0 || cDecAxis < 0) { |
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440 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE, "Could not find required DATA array axes."); |
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441 | close(); |
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442 | return 1; |
---|
443 | } |
---|
444 | |
---|
445 | // Set up machinery for data retrieval. |
---|
446 | findData(SCAN, (char *)(char *)"SCAN", TINT); // Shared. |
---|
447 | findData(CYCLE, (char *)(char *)"CYCLE", TINT); // Additional. |
---|
448 | findData(DATE_OBS, (char *)"DATE-OBS", TSTRING); // Core. |
---|
449 | |
---|
450 | if (cTimeAxis >= 0) { |
---|
451 | // The DATA array has a TIME axis. |
---|
452 | if (cNAxisTime > 1) { |
---|
453 | // Non-degenerate. |
---|
454 | findData(TimeRefVal, timeCRVAL, TDOUBLE); // Time reference value. |
---|
455 | findData(TimeDelt, timeCDELT, TDOUBLE); // Time increment. |
---|
456 | findData(TimeRefPix, timeCRPIX, TFLOAT); // Time reference pixel. |
---|
457 | } else { |
---|
458 | // Degenerate, treat its like a simple TIME keyword. |
---|
459 | findData(TIME, timeCRVAL, TDOUBLE); |
---|
460 | } |
---|
461 | |
---|
462 | } else { |
---|
463 | findData(TIME, (char *)(char *)"TIME", TDOUBLE); // Core. |
---|
464 | } |
---|
465 | |
---|
466 | findData(EXPOSURE, (char *)(char *)"EXPOSURE", TFLOAT); // Core. |
---|
467 | findData(OBJECT, (char *)(char *)"OBJECT", TSTRING); // Core. |
---|
468 | findData(OBJ_RA, (char *)"OBJ-RA", TDOUBLE); // Additional. |
---|
469 | findData(OBJ_DEC, (char *)"OBJ-DEC", TDOUBLE); // Additional. |
---|
470 | findData(RESTFRQ, (char *)(char *)"RESTFRQ", TDOUBLE); // Additional. |
---|
471 | findData(OBSMODE, (char *)(char *)"OBSMODE", TSTRING); // Shared. |
---|
472 | |
---|
473 | findData(BEAM, (char *)(char *)"BEAM", TSHORT); // Additional. |
---|
474 | findData(IF, (char *)(char *)"IF", TSHORT); // Additional. |
---|
475 | findData(FqRefVal, fqCRVAL, TDOUBLE); // Frequency reference value. |
---|
476 | findData(FqDelt, fqCDELT, TDOUBLE); // Frequency increment. |
---|
477 | findData(FqRefPix, fqCRPIX, TFLOAT); // Frequency reference pixel. |
---|
478 | findData(RA, raCRVAL, TDOUBLE); // Right ascension. |
---|
479 | findData(DEC, decCRVAL, TDOUBLE); // Declination. |
---|
480 | findData(SCANRATE, (char *)(char *)"SCANRATE", TFLOAT); // Additional. |
---|
481 | |
---|
482 | findData(TSYS, (char *)(char *)"TSYS", TFLOAT); // Core. |
---|
483 | findData(CALFCTR, (char *)(char *)"CALFCTR", TFLOAT); // Additional. |
---|
484 | findData(XCALFCTR, (char *)(char *)"XCALFCTR", TFLOAT); // Additional. |
---|
485 | findData(BASELIN, (char *)(char *)"BASELIN", TFLOAT); // Additional. |
---|
486 | findData(BASESUB, (char *)(char *)"BASESUB", TFLOAT); // Additional. |
---|
487 | findData(XPOLDATA, (char *)(char *)"XPOLDATA", TFLOAT); // Additional. |
---|
488 | |
---|
489 | findData(REFBEAM, (char *)(char *)"REFBEAM", TSHORT); // Additional. |
---|
490 | findData(TCAL, (char *)(char *)"TCAL", TFLOAT); // Shared. |
---|
491 | findData(TCALTIME, (char *)(char *)"TCALTIME", TSTRING); // Additional. |
---|
492 | findData(AZIMUTH, (char *)(char *)"AZIMUTH", TFLOAT); // Shared. |
---|
493 | findData(ELEVATIO, (char *)(char *)"ELEVATIO", TFLOAT); // Shared. |
---|
494 | findData(PARANGLE, (char *)(char *)"PARANGLE", TFLOAT); // Additional. |
---|
495 | findData(FOCUSAXI, (char *)(char *)"FOCUSAXI", TFLOAT); // Additional. |
---|
496 | findData(FOCUSTAN, (char *)(char *)"FOCUSTAN", TFLOAT); // Additional. |
---|
497 | findData(FOCUSROT, (char *)(char *)"FOCUSROT", TFLOAT); // Additional. |
---|
498 | findData(TAMBIENT, (char *)(char *)"TAMBIENT", TFLOAT); // Shared. |
---|
499 | findData(PRESSURE, (char *)(char *)"PRESSURE", TFLOAT); // Shared. |
---|
500 | findData(HUMIDITY, (char *)(char *)"HUMIDITY", TFLOAT); // Shared. |
---|
501 | findData(WINDSPEE, (char *)(char *)"WINDSPEE", TFLOAT); // Shared. |
---|
502 | findData(WINDDIRE, (char *)(char *)"WINDDIRE", TFLOAT); // Shared. |
---|
503 | |
---|
504 | findData(STOKES, polCRVAL, TINT); |
---|
505 | findData(SIG, (char *)(char *)"SIG", TSTRING); |
---|
506 | findData(CAL, (char *)(char *)"CAL", TSTRING); |
---|
507 | |
---|
508 | findData(RVSYS, (char *)(char *)"RVSYS", TDOUBLE); |
---|
509 | findData(VFRAME, (char *)(char *)"VFRAME", TDOUBLE); |
---|
510 | findData(VELDEF, (char *)(char *)"VELDEF", TSTRING); |
---|
511 | |
---|
512 | findData(TIMESTAMP, (char *)(char *)"TIMESTAMP", TSTRING); |
---|
513 | findData(DURATION, (char *)(char *)"DURATION", TDOUBLE); |
---|
514 | findData(SAMPLER, (char *)(char *)"SAMPLER", TSTRING); |
---|
515 | |
---|
516 | if (cStatus) { |
---|
517 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE); |
---|
518 | close(); |
---|
519 | return 1; |
---|
520 | } |
---|
521 | |
---|
522 | |
---|
523 | // Check for alternative column names. |
---|
524 | if (cALFA) { |
---|
525 | // ALFA data. |
---|
526 | cALFAscan = 0; |
---|
527 | cScanNo = 0; |
---|
528 | if (cALFA_CIMA) { |
---|
529 | findData(SCAN, (char *)"SCAN_ID", TINT); |
---|
530 | if (cALFA_CIMA > 1) { |
---|
531 | // Note that RECNUM increases by cNAxisTime per row. |
---|
532 | findData(CYCLE, (char *)(char *)"RECNUM", TINT); |
---|
533 | } else { |
---|
534 | findData(CYCLE, (char *)(char *)"SUBSCAN", TINT); |
---|
535 | } |
---|
536 | } else if (cALFA_BD) { |
---|
537 | findData(SCAN, (char *)"SCAN_NUMBER", TINT); |
---|
538 | findData(CYCLE, (char *)"PATTERN_NUMBER", TINT); |
---|
539 | } |
---|
540 | } else { |
---|
541 | readData(SCAN, 1, &cFirstScanNo); |
---|
542 | } |
---|
543 | |
---|
544 | cCycleNo = 0; |
---|
545 | cLastUTC = 0.0; |
---|
546 | for ( int i = 0 ; i < 4 ; i++ ) { |
---|
547 | cGLastUTC[i] = 0.0 ; |
---|
548 | cGLastScan[i] = -1 ; |
---|
549 | cGCycleNo[i] = 0 ; |
---|
550 | } |
---|
551 | |
---|
552 | // Beam number, 1-relative by default. |
---|
553 | cBeam_1rel = 1; |
---|
554 | if (cALFA) { |
---|
555 | // ALFA INPUT_ID, 0-relative (overrides BEAM column if present). |
---|
556 | findData(BEAM, (char *)"INPUT_ID", TSHORT); |
---|
557 | cBeam_1rel = 0; |
---|
558 | |
---|
559 | } else if (cData[BEAM].colnum < 0) { |
---|
560 | if (beamCRVAL) { |
---|
561 | // There is a BEAM axis. |
---|
562 | findData(BEAM, beamCRVAL, TDOUBLE); |
---|
563 | } else { |
---|
564 | // ms2sdfits output, 0-relative "feed" number. |
---|
565 | findData(BEAM, (char *)"MAIN_FEED1", TSHORT); |
---|
566 | cBeam_1rel = 0; |
---|
567 | } |
---|
568 | } |
---|
569 | |
---|
570 | // IF number, 1-relative by default. |
---|
571 | cIF_1rel = 1; |
---|
572 | if (cALFA && cData[IF].colnum < 0) { |
---|
573 | // ALFA data, 0-relative. |
---|
574 | if (cALFA_CIMA > 1) { |
---|
575 | findData(IF, (char *)(char *)"IFN", TSHORT); |
---|
576 | } else { |
---|
577 | findData(IF, (char *)(char *)"IFVAL", TSHORT); |
---|
578 | } |
---|
579 | cIF_1rel = 0; |
---|
580 | } |
---|
581 | |
---|
582 | // ms2sdfits writes a scalar "TSYS" column that averages the polarizations. |
---|
583 | int colnum; |
---|
584 | findCol((char *)"SYSCAL_TSYS", &colnum); |
---|
585 | if (colnum > 0) { |
---|
586 | // This contains the vector Tsys. |
---|
587 | findData(TSYS, (char *)"SYSCAL_TSYS", TFLOAT); |
---|
588 | } |
---|
589 | |
---|
590 | // XPOLDATA? |
---|
591 | |
---|
592 | if (cData[SCANRATE].colnum < 0) { |
---|
593 | findData(SCANRATE, (char *)"FIELD_POINTING_DIR_RATE", TFLOAT); |
---|
594 | } |
---|
595 | |
---|
596 | if (cData[RESTFRQ].colnum < 0) { |
---|
597 | findData(RESTFRQ, (char *)(char *)"RESTFREQ", TDOUBLE); |
---|
598 | if (cData[RESTFRQ].colnum < 0) { |
---|
599 | findData(RESTFRQ, (char *)"SPECTRAL_WINDOW_REST_FREQUENCY", TDOUBLE); |
---|
600 | } |
---|
601 | } |
---|
602 | |
---|
603 | if (cData[OBJ_RA].colnum < 0) { |
---|
604 | findData(OBJ_RA, (char *)"SOURCE_DIRECTION", TDOUBLE); |
---|
605 | } |
---|
606 | if (cData[OBJ_DEC].colnum < 0) { |
---|
607 | findData(OBJ_DEC, (char *)"SOURCE_DIRECTION", TDOUBLE); |
---|
608 | } |
---|
609 | |
---|
610 | // REFBEAM? |
---|
611 | |
---|
612 | if (cData[TCAL].colnum < 0) { |
---|
613 | findData(TCAL, (char *)"SYSCAL_TCAL", TFLOAT); |
---|
614 | } else if (cALFA_BD) { |
---|
615 | // ALFA BDFITS has a different TCAL with 64 elements - kill it! |
---|
616 | findData(TCAL, (char *)"NO NO NO", TFLOAT); |
---|
617 | } |
---|
618 | |
---|
619 | if (cALFA_BD) { |
---|
620 | // ALFA BDFITS. |
---|
621 | findData(AZIMUTH, (char *)(char *)"CRVAL2B", TFLOAT); |
---|
622 | findData(ELEVATIO, (char *)(char *)"CRVAL3B", TFLOAT); |
---|
623 | } |
---|
624 | |
---|
625 | if (cALFA) { |
---|
626 | // ALFA data. |
---|
627 | findData(PARANGLE, (char *)"PARA_ANG", TFLOAT); |
---|
628 | } |
---|
629 | |
---|
630 | if (cData[TAMBIENT].colnum < 0) { |
---|
631 | findData(TAMBIENT, (char *)"WEATHER_TEMPERATURE", TFLOAT); |
---|
632 | } |
---|
633 | |
---|
634 | if (cData[PRESSURE].colnum < 0) { |
---|
635 | findData(PRESSURE, (char *)"WEATHER_PRESSURE", TFLOAT); |
---|
636 | } |
---|
637 | |
---|
638 | if (cData[HUMIDITY].colnum < 0) { |
---|
639 | findData(HUMIDITY, (char *)"WEATHER_REL_HUMIDITY", TFLOAT); |
---|
640 | } |
---|
641 | |
---|
642 | if (cData[WINDSPEE].colnum < 0) { |
---|
643 | findData(WINDSPEE, (char *)"WEATHER_WIND_SPEED", TFLOAT); |
---|
644 | } |
---|
645 | |
---|
646 | if (cData[WINDDIRE].colnum < 0) { |
---|
647 | findData(WINDDIRE, (char *)"WEATHER_WIND_DIRECTION", TFLOAT); |
---|
648 | } |
---|
649 | |
---|
650 | // Determine which beams are present in the data. |
---|
651 | if (cData[BEAM].colnum > 0) { |
---|
652 | short *beamCol = new short[cNRow]; |
---|
653 | short beamNul = 1; |
---|
654 | int anynul; |
---|
655 | if (fits_read_col(cSDptr, TSHORT, cData[BEAM].colnum, 1, 1, cNRow, |
---|
656 | &beamNul, beamCol, &anynul, &cStatus)) { |
---|
657 | delete [] beamCol; |
---|
658 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE); |
---|
659 | close(); |
---|
660 | return 1; |
---|
661 | } |
---|
662 | |
---|
663 | // Find the maximum beam number. |
---|
664 | cNBeam = cBeam_1rel - 1; |
---|
665 | for (int irow = 0; irow < cNRow; irow++) { |
---|
666 | if (beamCol[irow] > cNBeam) { |
---|
667 | cNBeam = beamCol[irow]; |
---|
668 | } |
---|
669 | |
---|
670 | // Check validity. |
---|
671 | if (beamCol[irow] < cBeam_1rel) { |
---|
672 | delete [] beamCol; |
---|
673 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE, "SDFITS file contains invalid beam number."); |
---|
674 | close(); |
---|
675 | return 1; |
---|
676 | } |
---|
677 | } |
---|
678 | |
---|
679 | if (!cBeam_1rel) cNBeam++; |
---|
680 | |
---|
681 | // Find all beams present in the data. |
---|
682 | cBeams = new int[cNBeam]; |
---|
683 | for (int ibeam = 0; ibeam < cNBeam; ibeam++) { |
---|
684 | cBeams[ibeam] = 0; |
---|
685 | } |
---|
686 | |
---|
687 | for (int irow = 0; irow < cNRow; irow++) { |
---|
688 | cBeams[beamCol[irow] - cBeam_1rel] = 1; |
---|
689 | } |
---|
690 | |
---|
691 | delete [] beamCol; |
---|
692 | |
---|
693 | } else { |
---|
694 | // No BEAM column. |
---|
695 | cNBeam = 1; |
---|
696 | cBeams = new int[1]; |
---|
697 | cBeams[0] = 1; |
---|
698 | } |
---|
699 | |
---|
700 | // Passing back the address of the array allows PKSFITSreader::select() to |
---|
701 | // modify its elements directly. |
---|
702 | nBeam = cNBeam; |
---|
703 | beams = cBeams; |
---|
704 | |
---|
705 | |
---|
706 | // Determine which IFs are present in the data. |
---|
707 | if (cData[IF].colnum > 0) { |
---|
708 | short *IFCol = new short[cNRow]; |
---|
709 | short IFNul = 1; |
---|
710 | int anynul; |
---|
711 | if (fits_read_col(cSDptr, TSHORT, cData[IF].colnum, 1, 1, cNRow, |
---|
712 | &IFNul, IFCol, &anynul, &cStatus)) { |
---|
713 | delete [] IFCol; |
---|
714 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE); |
---|
715 | close(); |
---|
716 | return 1; |
---|
717 | } |
---|
718 | |
---|
719 | // Find the maximum IF number. |
---|
720 | cNIF = cIF_1rel - 1; |
---|
721 | for (int irow = 0; irow < cNRow; irow++) { |
---|
722 | if (IFCol[irow] > cNIF) { |
---|
723 | cNIF = IFCol[irow]; |
---|
724 | } |
---|
725 | |
---|
726 | // Check validity. |
---|
727 | if (IFCol[irow] < cIF_1rel) { |
---|
728 | delete [] IFCol; |
---|
729 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE, "SDFITS file contains invalid IF number."); |
---|
730 | close(); |
---|
731 | return 1; |
---|
732 | } |
---|
733 | } |
---|
734 | |
---|
735 | if (!cIF_1rel) cNIF++; |
---|
736 | |
---|
737 | // Find all IFs present in the data. |
---|
738 | cIFs = new int[cNIF]; |
---|
739 | cNChan = new int[cNIF]; |
---|
740 | cNPol = new int[cNIF]; |
---|
741 | cHaveXPol = new int[cNIF]; |
---|
742 | cGetXPol = 0; |
---|
743 | |
---|
744 | for (int iIF = 0; iIF < cNIF; iIF++) { |
---|
745 | cIFs[iIF] = 0; |
---|
746 | cNChan[iIF] = 0; |
---|
747 | cNPol[iIF] = 0; |
---|
748 | cHaveXPol[iIF] = 0; |
---|
749 | } |
---|
750 | |
---|
751 | for (int irow = 0; irow < cNRow; irow++) { |
---|
752 | int iIF = IFCol[irow] - cIF_1rel; |
---|
753 | if (cIFs[iIF] == 0) { |
---|
754 | cIFs[iIF] = 1; |
---|
755 | |
---|
756 | // Find the axis lengths. |
---|
757 | if (cHaveSpectra) { |
---|
758 | if (cData[DATA].nelem < 0) { |
---|
759 | // Variable dimension array. |
---|
760 | if (readDim(DATA, irow+1, &cNAxes, cNAxis)) { |
---|
761 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE); |
---|
762 | close(); |
---|
763 | return 1; |
---|
764 | } |
---|
765 | } |
---|
766 | |
---|
767 | } else { |
---|
768 | if (cData[DATAXED].colnum > 0) { |
---|
769 | char dataxed[32]; |
---|
770 | readParm((char *)(char *)"DATAXED", TSTRING, dataxed); |
---|
771 | |
---|
772 | sscanf(dataxed, "(%ld,%ld,%ld,%ld,%ld)", cNAxis, cNAxis+1, |
---|
773 | cNAxis+2, cNAxis+3, cNAxis+4); |
---|
774 | } |
---|
775 | } |
---|
776 | |
---|
777 | // Number of channels and polarizations. |
---|
778 | cNChan[iIF] = cNAxis[cFreqAxis]; |
---|
779 | cNPol[iIF] = cNAxis[cStokesAxis]; |
---|
780 | cHaveXPol[iIF] = 0; |
---|
781 | |
---|
782 | // Is cross-polarization data present? |
---|
783 | if (cData[XPOLDATA].colnum > 0) { |
---|
784 | // Check that it conforms. |
---|
785 | int nAxis; |
---|
786 | long nAxes[2]; |
---|
787 | |
---|
788 | if (readDim(XPOLDATA, irow+1, &nAxis, nAxes)) { |
---|
789 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE ); |
---|
790 | close(); |
---|
791 | return 1; |
---|
792 | } |
---|
793 | |
---|
794 | // Default is to get it if we have it. |
---|
795 | if (nAxis == 2 && |
---|
796 | nAxes[0] == 2 && |
---|
797 | nAxes[1] == cNChan[iIF]) { |
---|
798 | cGetXPol = cHaveXPol[iIF] = 1; |
---|
799 | } |
---|
800 | } |
---|
801 | } |
---|
802 | } |
---|
803 | |
---|
804 | delete [] IFCol; |
---|
805 | |
---|
806 | } else if ( numHDU > 1 ) { |
---|
807 | Vector<Int> nIFs = nIFPerHDU() ; |
---|
808 | cNIF = sum( nIFs ) ; |
---|
809 | sprintf( cMsg, "cNIF = %d", cNIF ) ; |
---|
810 | log( LogOrigin( className, methodName, WHERE ), LogIO::NORMAL, cMsg ) ; |
---|
811 | cIFs = new int[cNIF] ; |
---|
812 | cNChan = new int[cNIF]; |
---|
813 | cNPol = new int[cNIF]; |
---|
814 | cHaveXPol = new int[cNIF]; |
---|
815 | cGetXPol = 0; |
---|
816 | for ( int iif = 0 ; iif < numHDU ; iif++ ) { |
---|
817 | cIFs[iif] = 1 ; |
---|
818 | cNChan[iif] = 0 ; |
---|
819 | cNPol[iif] = 1 ; |
---|
820 | cHaveXPol[iif] = 0 ; |
---|
821 | } |
---|
822 | Int cidx = 0 ; |
---|
823 | for ( int ihdu = 0 ; ihdu < numHDU ; ihdu++ ) { |
---|
824 | // Move |
---|
825 | fits_movabs_hdu( cSDptr, hduId[ihdu], NULL, &cStatus ) ; |
---|
826 | |
---|
827 | if (readDim(DATA, 1, &cNAxes, cNAxis)) { |
---|
828 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE); |
---|
829 | close(); |
---|
830 | return 1; |
---|
831 | } |
---|
832 | |
---|
833 | // Number of channels and polarizations. |
---|
834 | for ( int irow = 0 ; irow < nIFs[ihdu] ; irow++ ) { |
---|
835 | cNChan[cidx+irow] = cNAxis[cFreqAxis]; |
---|
836 | cNPol[cidx+irow] = cNAxis[cStokesAxis]; |
---|
837 | cHaveXPol[cidx+irow] = 0; |
---|
838 | |
---|
839 | // Is cross-polarization data present? |
---|
840 | if (cData[XPOLDATA].colnum > 0) { |
---|
841 | // Check that it conforms. |
---|
842 | int nAxis; |
---|
843 | long nAxes[2]; |
---|
844 | |
---|
845 | if (readDim(XPOLDATA, 1, &nAxis, nAxes)) { |
---|
846 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE ); |
---|
847 | close(); |
---|
848 | return 1; |
---|
849 | } |
---|
850 | |
---|
851 | // Default is to get it if we have it. |
---|
852 | for ( int irow = 0 ; irow < nIFs[ihdu] ; irow++ ) { |
---|
853 | if (nAxis == 2 && |
---|
854 | nAxes[0] == 2 && |
---|
855 | nAxes[1] == cNChan[cidx+irow]) { |
---|
856 | cGetXPol = cHaveXPol[cidx+irow] = 1; |
---|
857 | } |
---|
858 | } |
---|
859 | } |
---|
860 | } |
---|
861 | cidx += nIFs[ihdu] ; |
---|
862 | } |
---|
863 | } else { |
---|
864 | // No IF column. |
---|
865 | cNIF = 1; |
---|
866 | cIFs = new int[1]; |
---|
867 | cIFs[0] = 1; |
---|
868 | |
---|
869 | cNChan = new int[1]; |
---|
870 | cNPol = new int[1]; |
---|
871 | cHaveXPol = new int[1]; |
---|
872 | cGetXPol = 0; |
---|
873 | |
---|
874 | // Number of channels and polarizations. |
---|
875 | cNChan[0] = cNAxis[cFreqAxis]; |
---|
876 | cNPol[0] = cNAxis[cStokesAxis]; |
---|
877 | cHaveXPol[0] = 0; |
---|
878 | } |
---|
879 | |
---|
880 | if (cALFA && cALFA_CIMA < 2) { |
---|
881 | // Older ALFA data labels each polarization as a separate IF. |
---|
882 | cNPol[0] = cNIF; |
---|
883 | cNIF = 1; |
---|
884 | } |
---|
885 | |
---|
886 | // For GBT data that stores spectra for each polarization in separate rows |
---|
887 | if ( cData[STOKES].colnum > 0 ) { |
---|
888 | // int *stokesCol = new int[cNRow]; |
---|
889 | int stokesNul = 1; |
---|
890 | int anynul; |
---|
891 | // if (fits_read_col(cSDptr, TINT, cData[STOKES].colnum, 1, 1, cNRow, |
---|
892 | // &stokesNul, stokesCol, &anynul, &cStatus)) { |
---|
893 | // delete [] stokesCol; |
---|
894 | // log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE); |
---|
895 | // close(); |
---|
896 | // return 1; |
---|
897 | // } |
---|
898 | vector<int *> stokesCols( numHDU ) ; |
---|
899 | for ( int ihdu = 0 ; ihdu < numHDU ; ihdu++ ) { |
---|
900 | fits_movabs_hdu( cSDptr, hduId[ihdu], NULL, &cStatus ) ; |
---|
901 | stokesCols[ihdu] = new int[cNRowT[ihdu]] ; |
---|
902 | fits_movabs_hdu( cSDptr, hduId[ihdu], NULL, &cStatus ) ; |
---|
903 | if (fits_read_col(cSDptr, TINT, cData[STOKES].colnum, 1, 1, cNRowT[ihdu], |
---|
904 | &stokesNul, stokesCols[ihdu] , &anynul, &cStatus)) { |
---|
905 | for ( int jhdu = 0 ; jhdu <= ihdu ; jhdu++ ) { |
---|
906 | delete [] stokesCols[jhdu] ; |
---|
907 | } |
---|
908 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE); |
---|
909 | close(); |
---|
910 | return 1; |
---|
911 | } |
---|
912 | } |
---|
913 | fits_movabs_hdu( cSDptr, hduId[0], NULL, &cStatus ) ; |
---|
914 | |
---|
915 | vector<int> pols ; |
---|
916 | // pols.push_back( stokesCol[0] ) ; |
---|
917 | // for ( int i = 0 ; i < cNRow ; i++ ) { |
---|
918 | // bool pmatch = false ; |
---|
919 | // for ( uint j = 0 ; j < pols.size() ; j++ ) { |
---|
920 | // if ( stokesCol[i] == pols[j] ) { |
---|
921 | // pmatch = true ; |
---|
922 | // break ; |
---|
923 | // } |
---|
924 | // } |
---|
925 | // if ( !pmatch ) { |
---|
926 | // pols.push_back( stokesCol[i] ) ; |
---|
927 | // } |
---|
928 | // } |
---|
929 | pols.push_back( stokesCols[0][0] ) ; |
---|
930 | for ( int k = 0 ; k < numHDU ; k++ ) { |
---|
931 | for ( int i = 0 ; i < cNRowT[k] ; i++ ) { |
---|
932 | bool pmatch = false ; |
---|
933 | for ( uint j = 0 ; j < pols.size() ; j++ ) { |
---|
934 | if ( stokesCols[k][i] == pols[j] ) { |
---|
935 | pmatch = true ; |
---|
936 | break ; |
---|
937 | } |
---|
938 | } |
---|
939 | if ( !pmatch ) { |
---|
940 | pols.push_back( stokesCols[k][i] ) ; |
---|
941 | } |
---|
942 | } |
---|
943 | } |
---|
944 | |
---|
945 | cPols = new int[pols.size()] ; |
---|
946 | for ( uint i = 0 ; i < pols.size() ; i++ ) { |
---|
947 | cPols[i] = pols[i] ; |
---|
948 | } |
---|
949 | |
---|
950 | for ( int i = 0 ; i < cNIF ; i++ ) { |
---|
951 | cNPol[i] = pols.size() ; |
---|
952 | } |
---|
953 | |
---|
954 | // delete [] stokesCol ; |
---|
955 | for ( int k = 0 ; k < numHDU ; k++ ) { |
---|
956 | delete [] stokesCols[k] ; |
---|
957 | } |
---|
958 | } |
---|
959 | |
---|
960 | // Passing back the address of the array allows PKSFITSreader::select() to |
---|
961 | // modify its elements directly. |
---|
962 | nIF = cNIF; |
---|
963 | IFs = cIFs; |
---|
964 | |
---|
965 | nChan = cNChan; |
---|
966 | nPol = cNPol; |
---|
967 | haveXPol = cHaveXPol; |
---|
968 | |
---|
969 | |
---|
970 | // Default channel range selection. |
---|
971 | cStartChan = new int[cNIF]; |
---|
972 | cEndChan = new int[cNIF]; |
---|
973 | cRefChan = new int[cNIF]; |
---|
974 | |
---|
975 | for (int iIF = 0; iIF < cNIF; iIF++) { |
---|
976 | cStartChan[iIF] = 1; |
---|
977 | cEndChan[iIF] = cNChan[iIF]; |
---|
978 | cRefChan[iIF] = cNChan[iIF]/2 + 1; |
---|
979 | } |
---|
980 | |
---|
981 | // Default is to get it if we have it. |
---|
982 | cGetSpectra = cHaveSpectra; |
---|
983 | |
---|
984 | |
---|
985 | // Are baseline parameters present? |
---|
986 | cHaveBase = 0; |
---|
987 | if (cData[BASELIN].colnum) { |
---|
988 | // Check that it conforms. |
---|
989 | int nAxis, status = 0; |
---|
990 | long nAxes[2]; |
---|
991 | |
---|
992 | if (fits_read_tdim(cSDptr, cData[BASELIN].colnum, 2, &nAxis, nAxes, |
---|
993 | &status) == 0) { |
---|
994 | cHaveBase = (nAxis == 2); |
---|
995 | } |
---|
996 | } |
---|
997 | haveBase = cHaveBase; |
---|
998 | |
---|
999 | |
---|
1000 | // Is extra system calibration data available? |
---|
1001 | cExtraSysCal = 0; |
---|
1002 | for (int iparm = REFBEAM; iparm < NDATA; iparm++) { |
---|
1003 | if (cData[iparm].colnum >= 0) { |
---|
1004 | cExtraSysCal = 1; |
---|
1005 | break; |
---|
1006 | } |
---|
1007 | } |
---|
1008 | |
---|
1009 | extraSysCal = cExtraSysCal; |
---|
1010 | |
---|
1011 | |
---|
1012 | // Extras for ALFA data. |
---|
1013 | cALFAacc = 0.0f; |
---|
1014 | if (cALFA_CIMA > 1) { |
---|
1015 | // FFTs per second when the Mock correlator operates in RFI blanking mode. |
---|
1016 | readData((char *)"PHFFTACC", TFLOAT, 0, &cALFAacc); |
---|
1017 | } |
---|
1018 | |
---|
1019 | |
---|
1020 | cRow = 0; |
---|
1021 | cTimeIdx = cNAxisTime; |
---|
1022 | |
---|
1023 | return 0; |
---|
1024 | } |
---|
1025 | |
---|
1026 | //---------------------------------------------------- GBTFITSreader::getHeader |
---|
1027 | |
---|
1028 | // Get parameters describing the data. |
---|
1029 | |
---|
1030 | int GBTFITSreader::getHeader( |
---|
1031 | char observer[32], |
---|
1032 | char project[32], |
---|
1033 | char telescope[32], |
---|
1034 | double antPos[3], |
---|
1035 | char obsMode[32], |
---|
1036 | char bunit[32], |
---|
1037 | float &equinox, |
---|
1038 | char radecsys[32], |
---|
1039 | char dopplerFrame[32], |
---|
1040 | char datobs[32], |
---|
1041 | double &utc, |
---|
1042 | double &refFreq, |
---|
1043 | double &bandwidth) |
---|
1044 | { |
---|
1045 | const string methodName = "getHeader()" ; |
---|
1046 | |
---|
1047 | // Has the file been opened? |
---|
1048 | if (!cSDptr) { |
---|
1049 | return 1; |
---|
1050 | } |
---|
1051 | |
---|
1052 | // Read parameter values. |
---|
1053 | readParm((char *)(char *)"OBSERVER", TSTRING, observer); // Shared. |
---|
1054 | readParm((char *)(char *)"PROJID", TSTRING, project); // Shared. |
---|
1055 | readParm((char *)(char *)"TELESCOP", TSTRING, telescope); // Core. |
---|
1056 | |
---|
1057 | antPos[0] = 0.0; |
---|
1058 | antPos[1] = 0.0; |
---|
1059 | antPos[2] = 0.0; |
---|
1060 | if (readParm((char *)"ANTENNA_POSITION", TDOUBLE, antPos)) { |
---|
1061 | readParm((char *)"OBSGEO-X", TDOUBLE, antPos); // Additional. |
---|
1062 | readParm((char *)"OBSGEO-Y", TDOUBLE, antPos + 1); // Additional. |
---|
1063 | readParm((char *)"OBSGEO-Z", TDOUBLE, antPos + 2); // Additional. |
---|
1064 | } |
---|
1065 | |
---|
1066 | if (antPos[0] == 0.0) { |
---|
1067 | if (cGBT) { |
---|
1068 | readParm( (char *)(char *)"SITELONG", TDOUBLE, antPos ) ; |
---|
1069 | readParm( (char *)(char *)"SITELAT", TDOUBLE, antPos+1 ) ; |
---|
1070 | readParm( (char *)(char *)"SITEELEV", TDOUBLE, antPos+2 ) ; |
---|
1071 | Vector<Double> pos( 2 ) ; |
---|
1072 | pos[0] = Double( antPos[0] ) ; |
---|
1073 | pos[1] = Double( antPos[1] ) ; |
---|
1074 | MPosition mp( MVPosition( Quantity( Double(antPos[2]), "m" ), |
---|
1075 | Quantum< Vector<Double> >( pos, "deg" ) ), |
---|
1076 | MPosition::WGS84 ) ; |
---|
1077 | MeasFrame mFrame( mp ) ; |
---|
1078 | MVPosition mvp ; |
---|
1079 | mFrame.getITRF( mvp ) ; |
---|
1080 | Vector<Double> antPosVec = mvp.getValue() ; |
---|
1081 | antPos[0] = (double)antPosVec[0] ; |
---|
1082 | antPos[1] = (double)antPosVec[1] ; |
---|
1083 | antPos[2] = (double)antPosVec[2] ; |
---|
1084 | } |
---|
1085 | else if (strncmp(telescope, "ATPKS", 5) == 0) { |
---|
1086 | // Parkes coordinates. |
---|
1087 | antPos[0] = -4554232.087; |
---|
1088 | antPos[1] = 2816759.046; |
---|
1089 | antPos[2] = -3454035.950; |
---|
1090 | } else if (strncmp(telescope, "ATMOPRA", 7) == 0) { |
---|
1091 | // Mopra coordinates. |
---|
1092 | antPos[0] = -4682768.630; |
---|
1093 | antPos[1] = 2802619.060; |
---|
1094 | antPos[2] = -3291759.900; |
---|
1095 | } else if (strncmp(telescope, "ARECIBO", 7) == 0) { |
---|
1096 | // Arecibo coordinates. |
---|
1097 | antPos[0] = 2390486.900; |
---|
1098 | antPos[1] = -5564731.440; |
---|
1099 | antPos[2] = 1994720.450; |
---|
1100 | } |
---|
1101 | } |
---|
1102 | |
---|
1103 | readData(OBSMODE, 1, obsMode); // Shared. |
---|
1104 | |
---|
1105 | // Brightness unit. |
---|
1106 | if (cData[DATAXED].colnum >= 0) { |
---|
1107 | strcpy(bunit, "Jy"); |
---|
1108 | } else { |
---|
1109 | strcpy(bunit, cData[DATA].units); |
---|
1110 | } |
---|
1111 | |
---|
1112 | if (strcmp(bunit, "JY") == 0) { |
---|
1113 | bunit[1] = 'y'; |
---|
1114 | } else if (strcmp(bunit, "JY/BEAM") == 0) { |
---|
1115 | strcpy(bunit, "Jy/beam"); |
---|
1116 | } |
---|
1117 | |
---|
1118 | readParm((char *)(char *)"EQUINOX", TFLOAT, &equinox); // Shared. |
---|
1119 | if (cStatus == 405) { |
---|
1120 | // EQUINOX was written as string value in early versions. |
---|
1121 | cStatus = 0; |
---|
1122 | char strtmp[32]; |
---|
1123 | readParm((char *)(char *)"EQUINOX", TSTRING, strtmp); |
---|
1124 | sscanf(strtmp, "%f", &equinox); |
---|
1125 | } |
---|
1126 | |
---|
1127 | if (readParm((char *)(char *)"RADESYS", TSTRING, radecsys)) { // Additional. |
---|
1128 | if (readParm((char *)(char *)"RADECSYS", TSTRING, radecsys)) { // Additional. |
---|
1129 | strcpy(radecsys, ""); |
---|
1130 | } |
---|
1131 | } |
---|
1132 | |
---|
1133 | if (readParm((char *)(char *)"SPECSYS", TSTRING, dopplerFrame)) { // Additional. |
---|
1134 | // Fallback value. |
---|
1135 | strcpy(dopplerFrame, "TOPOCENT"); |
---|
1136 | |
---|
1137 | // Look for VELFRAME, written by earlier versions of Livedata. |
---|
1138 | // |
---|
1139 | // Added few more codes currently (as of 2009 Oct) used in the GBT |
---|
1140 | // SDFITS (based io_sdfits_define.pro of GBTIDL). - TT |
---|
1141 | if (readParm((char *)(char *)"VELFRAME", TSTRING, dopplerFrame)) { // Additional. |
---|
1142 | // No, try digging it out of the CTYPE card (AIPS convention). |
---|
1143 | char keyw[9], ctype[9]; |
---|
1144 | sprintf(keyw, "CTYPE%ld", cFreqAxis+1); |
---|
1145 | readParm(keyw, TSTRING, ctype); |
---|
1146 | |
---|
1147 | if (strncmp(ctype, "FREQ-", 5) == 0) { |
---|
1148 | strcpy(dopplerFrame, ctype+5); |
---|
1149 | if (strcmp(dopplerFrame, "LSR") == 0) { |
---|
1150 | // LSR unqualified usually means LSR (kinematic). |
---|
1151 | strcpy(dopplerFrame, "LSRK"); |
---|
1152 | } else if (strcmp(dopplerFrame, "LSD") == 0) { |
---|
1153 | // LSR as a dynamical defintion |
---|
1154 | strcpy(dopplerFrame, "LSRD"); |
---|
1155 | } else if (strcmp(dopplerFrame, "HEL") == 0) { |
---|
1156 | // Almost certainly barycentric. |
---|
1157 | strcpy(dopplerFrame, "BARYCENT"); |
---|
1158 | } else if (strcmp(dopplerFrame, "BAR") == 0) { |
---|
1159 | // barycentric. |
---|
1160 | strcpy(dopplerFrame, "BARYCENT"); |
---|
1161 | } else if (strcmp(dopplerFrame, "OBS") == 0) { |
---|
1162 | strcpy(dopplerFrame, "TOPO"); |
---|
1163 | } else if (strcmp(dopplerFrame, "GEO") == 0) { |
---|
1164 | // geocentric |
---|
1165 | strcpy(dopplerFrame, "GEO"); |
---|
1166 | } else if (strcmp(dopplerFrame, "GAL") == 0) { |
---|
1167 | // galactic |
---|
1168 | strcpy(dopplerFrame, "GAL"); |
---|
1169 | } else if (strcmp(dopplerFrame, "LGR") == 0) { |
---|
1170 | // Local group |
---|
1171 | strcpy(dopplerFrame, "LGROUP"); |
---|
1172 | } else if (strcmp(dopplerFrame, "CMB") == 0) { |
---|
1173 | // Cosimic Microwave Backgroup |
---|
1174 | strcpy(dopplerFrame, "CMB"); |
---|
1175 | } |
---|
1176 | } else { |
---|
1177 | strcpy(dopplerFrame, ""); |
---|
1178 | } |
---|
1179 | } |
---|
1180 | |
---|
1181 | // always LSRK if GBT data |
---|
1182 | if (cGBT) { |
---|
1183 | strcpy(dopplerFrame, "LSRK"); |
---|
1184 | } |
---|
1185 | |
---|
1186 | |
---|
1187 | // Translate to FITS standard names. |
---|
1188 | if (strncmp(dopplerFrame, "TOP", 3) == 0) { |
---|
1189 | strcpy(dopplerFrame, "TOPOCENT"); |
---|
1190 | } else if (strncmp(dopplerFrame, "GEO", 3) == 0) { |
---|
1191 | strcpy(dopplerFrame, "GEOCENTR"); |
---|
1192 | } else if (strncmp(dopplerFrame, "HEL", 3) == 0) { |
---|
1193 | strcpy(dopplerFrame, "HELIOCEN"); |
---|
1194 | } else if (strncmp(dopplerFrame, "BARY", 4) == 0) { |
---|
1195 | strcpy(dopplerFrame, "BARYCENT"); |
---|
1196 | } else if (strncmp(dopplerFrame, "GAL", 3) == 0) { |
---|
1197 | strcpy(dopplerFrame, "GALACTOC"); |
---|
1198 | } else if (strncmp(dopplerFrame, "LGROUP", 6) == 0) { |
---|
1199 | strcpy(dopplerFrame, "LOCALGRP"); |
---|
1200 | } else if (strncmp(dopplerFrame, "CMB", 3) == 0) { |
---|
1201 | strcpy(dopplerFrame, "CMBDIPOL"); |
---|
1202 | } |
---|
1203 | } |
---|
1204 | |
---|
1205 | if (cStatus) { |
---|
1206 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE); |
---|
1207 | return 1; |
---|
1208 | } |
---|
1209 | |
---|
1210 | // Get parameters from first row of table. |
---|
1211 | readTime(1, 1, datobs, utc); |
---|
1212 | readData(FqRefVal, 1, &refFreq); |
---|
1213 | readParm((char *)(char *)"BANDWID", TDOUBLE, &bandwidth); // Core. |
---|
1214 | |
---|
1215 | if (cStatus) { |
---|
1216 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE); |
---|
1217 | return 1; |
---|
1218 | } |
---|
1219 | |
---|
1220 | return 0; |
---|
1221 | } |
---|
1222 | |
---|
1223 | //-------------------------------------------------- GBTFITSreader::getFreqInfo |
---|
1224 | |
---|
1225 | // Get frequency parameters for each IF. |
---|
1226 | |
---|
1227 | int GBTFITSreader::getFreqInfo( |
---|
1228 | int &nIF, |
---|
1229 | double* &startFreq, |
---|
1230 | double* &endFreq) |
---|
1231 | { |
---|
1232 | const string methodName = "getFreqInfo()" ; |
---|
1233 | |
---|
1234 | float fqRefPix; |
---|
1235 | double fqDelt, fqRefVal; |
---|
1236 | |
---|
1237 | nIF = cNIF; |
---|
1238 | startFreq = new double[nIF]; |
---|
1239 | endFreq = new double[nIF]; |
---|
1240 | |
---|
1241 | if (cData[IF].colnum > 0) { |
---|
1242 | short *IFCol = new short[cNRow]; |
---|
1243 | short IFNul = 1; |
---|
1244 | int anynul; |
---|
1245 | if (fits_read_col(cSDptr, TSHORT, cData[IF].colnum, 1, 1, cNRow, |
---|
1246 | &IFNul, IFCol, &anynul, &cStatus)) { |
---|
1247 | delete [] IFCol; |
---|
1248 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE); |
---|
1249 | close(); |
---|
1250 | return 1; |
---|
1251 | } |
---|
1252 | |
---|
1253 | for (int iIF = 0; iIF < nIF; iIF++) { |
---|
1254 | if (cIFs[iIF]) { |
---|
1255 | // Find the first occurrence of this IF in the table. |
---|
1256 | int IFno = iIF + cIF_1rel; |
---|
1257 | for (int irow = 0; irow < cNRow;) { |
---|
1258 | if (IFCol[irow++] == IFno) { |
---|
1259 | readData(FqRefPix, irow, &fqRefPix); |
---|
1260 | readData(FqRefVal, irow, &fqRefVal); |
---|
1261 | readData(FqDelt, irow, &fqDelt); |
---|
1262 | |
---|
1263 | if (cALFA_BD) { |
---|
1264 | unsigned char invert; |
---|
1265 | readData((char *)"UPPERSB", TBYTE, irow, &invert); |
---|
1266 | |
---|
1267 | if (invert) { |
---|
1268 | fqDelt = -fqDelt; |
---|
1269 | } |
---|
1270 | } |
---|
1271 | |
---|
1272 | startFreq[iIF] = fqRefVal + ( 1 - fqRefPix) * fqDelt; |
---|
1273 | endFreq[iIF] = fqRefVal + (cNChan[iIF] - fqRefPix) * fqDelt; |
---|
1274 | |
---|
1275 | break; |
---|
1276 | } |
---|
1277 | } |
---|
1278 | |
---|
1279 | } else { |
---|
1280 | startFreq[iIF] = 0.0; |
---|
1281 | endFreq[iIF] = 0.0; |
---|
1282 | } |
---|
1283 | } |
---|
1284 | |
---|
1285 | delete [] IFCol; |
---|
1286 | |
---|
1287 | } else { |
---|
1288 | // No IF column, read the first table entry. |
---|
1289 | readData(FqRefPix, 1, &fqRefPix); |
---|
1290 | readData(FqRefVal, 1, &fqRefVal); |
---|
1291 | readData(FqDelt, 1, &fqDelt); |
---|
1292 | |
---|
1293 | startFreq[0] = fqRefVal + ( 1 - fqRefPix) * fqDelt; |
---|
1294 | endFreq[0] = fqRefVal + (cNChan[0] - fqRefPix) * fqDelt; |
---|
1295 | } |
---|
1296 | |
---|
1297 | return cStatus; |
---|
1298 | } |
---|
1299 | |
---|
1300 | //---------------------------------------------------- GBTFITSreader::findRange |
---|
1301 | |
---|
1302 | // Find the range of the data in time and position. |
---|
1303 | |
---|
1304 | int GBTFITSreader::findRange( |
---|
1305 | int &nRow, |
---|
1306 | int &nSel, |
---|
1307 | char dateSpan[2][32], |
---|
1308 | double utcSpan[2], |
---|
1309 | double* &positions) |
---|
1310 | { |
---|
1311 | const string methodName = "findRange()" ; |
---|
1312 | |
---|
1313 | // Has the file been opened? |
---|
1314 | if (!cSDptr) { |
---|
1315 | return 1; |
---|
1316 | } |
---|
1317 | |
---|
1318 | nRow = cNRow; |
---|
1319 | |
---|
1320 | // Find the number of rows selected. |
---|
1321 | short *sel = new short[cNRow]; |
---|
1322 | for (int irow = 0; irow < cNRow; irow++) { |
---|
1323 | sel[irow] = 1; |
---|
1324 | } |
---|
1325 | |
---|
1326 | int anynul; |
---|
1327 | if (cData[BEAM].colnum > 0) { |
---|
1328 | short *beamCol = new short[cNRow]; |
---|
1329 | short beamNul = 1; |
---|
1330 | if (fits_read_col(cSDptr, TSHORT, cData[BEAM].colnum, 1, 1, cNRow, |
---|
1331 | &beamNul, beamCol, &anynul, &cStatus)) { |
---|
1332 | delete [] beamCol; |
---|
1333 | delete [] sel; |
---|
1334 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE); |
---|
1335 | return 1; |
---|
1336 | } |
---|
1337 | |
---|
1338 | for (int irow = 0; irow < cNRow; irow++) { |
---|
1339 | if (!cBeams[beamCol[irow]-cBeam_1rel]) { |
---|
1340 | sel[irow] = 0; |
---|
1341 | } |
---|
1342 | } |
---|
1343 | |
---|
1344 | delete [] beamCol; |
---|
1345 | } |
---|
1346 | |
---|
1347 | if (cData[IF].colnum > 0) { |
---|
1348 | short *IFCol = new short[cNRow]; |
---|
1349 | short IFNul = 1; |
---|
1350 | if (fits_read_col(cSDptr, TSHORT, cData[IF].colnum, 1, 1, cNRow, |
---|
1351 | &IFNul, IFCol, &anynul, &cStatus)) { |
---|
1352 | delete [] IFCol; |
---|
1353 | delete [] sel; |
---|
1354 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE); |
---|
1355 | return 1; |
---|
1356 | } |
---|
1357 | |
---|
1358 | for (int irow = 0; irow < cNRow; irow++) { |
---|
1359 | if (!cIFs[IFCol[irow]-cIF_1rel]) { |
---|
1360 | sel[irow] = 0; |
---|
1361 | } |
---|
1362 | } |
---|
1363 | |
---|
1364 | delete [] IFCol; |
---|
1365 | } |
---|
1366 | |
---|
1367 | nSel = 0; |
---|
1368 | for (int irow = 0; irow < cNRow; irow++) { |
---|
1369 | nSel += sel[irow]; |
---|
1370 | } |
---|
1371 | |
---|
1372 | |
---|
1373 | // Find the time range assuming the data is in chronological order. |
---|
1374 | readTime(1, 1, dateSpan[0], utcSpan[0]); |
---|
1375 | readTime(cNRow, cNAxisTime, dateSpan[1], utcSpan[1]); |
---|
1376 | |
---|
1377 | |
---|
1378 | // Retrieve positions for selected data. |
---|
1379 | int isel = 0; |
---|
1380 | positions = new double[2*nSel]; |
---|
1381 | |
---|
1382 | if (cCoordSys == 1) { |
---|
1383 | // Horizontal (Az,El). |
---|
1384 | if (cData[AZIMUTH].colnum < 0 || |
---|
1385 | cData[ELEVATIO].colnum < 0) { |
---|
1386 | log(LogOrigin( className, methodName, WHERE ), LogIO::WARN, "Azimuth/elevation information absent."); |
---|
1387 | cStatus = -1; |
---|
1388 | |
---|
1389 | } else { |
---|
1390 | float *az = new float[cNRow]; |
---|
1391 | float *el = new float[cNRow]; |
---|
1392 | readCol(AZIMUTH, az); |
---|
1393 | readCol(ELEVATIO, el); |
---|
1394 | |
---|
1395 | if (!cStatus) { |
---|
1396 | for (int irow = 0; irow < cNRow; irow++) { |
---|
1397 | if (sel[irow]) { |
---|
1398 | positions[isel++] = az[irow] * D2R; |
---|
1399 | positions[isel++] = el[irow] * D2R; |
---|
1400 | } |
---|
1401 | } |
---|
1402 | } |
---|
1403 | |
---|
1404 | delete [] az; |
---|
1405 | delete [] el; |
---|
1406 | } |
---|
1407 | |
---|
1408 | } else if (cCoordSys == 3) { |
---|
1409 | // ZPA-EL. |
---|
1410 | if (cData[BEAM].colnum < 0 || |
---|
1411 | cData[FOCUSROT].colnum < 0 || |
---|
1412 | cData[ELEVATIO].colnum < 0) { |
---|
1413 | log(LogOrigin( className, methodName, WHERE ), LogIO::WARN, "ZPA/elevation information absent."); |
---|
1414 | cStatus = -1; |
---|
1415 | |
---|
1416 | } else { |
---|
1417 | short *beam = new short[cNRow]; |
---|
1418 | float *rot = new float[cNRow]; |
---|
1419 | float *el = new float[cNRow]; |
---|
1420 | readCol(BEAM, beam); |
---|
1421 | readCol(FOCUSROT, rot); |
---|
1422 | readCol(ELEVATIO, el); |
---|
1423 | |
---|
1424 | if (!cStatus) { |
---|
1425 | for (int irow = 0; irow < cNRow; irow++) { |
---|
1426 | if (sel[irow]) { |
---|
1427 | Int beamNo = beam[irow]; |
---|
1428 | Double zpa = rot[irow]; |
---|
1429 | if (beamNo > 1) { |
---|
1430 | // Beam geometry for the Parkes multibeam. |
---|
1431 | if (beamNo < 8) { |
---|
1432 | zpa += -60.0 + 60.0*(beamNo-2); |
---|
1433 | } else { |
---|
1434 | zpa += -90.0 + 60.0*(beamNo-8); |
---|
1435 | } |
---|
1436 | |
---|
1437 | if (zpa < -180.0) { |
---|
1438 | zpa += 360.0; |
---|
1439 | } else if (zpa > 180.0) { |
---|
1440 | zpa -= 360.0; |
---|
1441 | } |
---|
1442 | } |
---|
1443 | |
---|
1444 | positions[isel++] = zpa * D2R; |
---|
1445 | positions[isel++] = el[irow] * D2R; |
---|
1446 | } |
---|
1447 | } |
---|
1448 | } |
---|
1449 | |
---|
1450 | delete [] beam; |
---|
1451 | delete [] rot; |
---|
1452 | delete [] el; |
---|
1453 | } |
---|
1454 | |
---|
1455 | } else { |
---|
1456 | double *ra = new double[cNRow]; |
---|
1457 | double *dec = new double[cNRow]; |
---|
1458 | readCol(RA, ra); |
---|
1459 | readCol(DEC, dec); |
---|
1460 | |
---|
1461 | if (cStatus) { |
---|
1462 | delete [] ra; |
---|
1463 | delete [] dec; |
---|
1464 | goto cleanup; |
---|
1465 | } |
---|
1466 | |
---|
1467 | if (cALFA_BD) { |
---|
1468 | for (int irow = 0; irow < cNRow; irow++) { |
---|
1469 | // Convert hours to degrees. |
---|
1470 | ra[irow] *= 15.0; |
---|
1471 | } |
---|
1472 | } |
---|
1473 | |
---|
1474 | if (cCoordSys == 0) { |
---|
1475 | // Equatorial (RA,Dec). |
---|
1476 | for (int irow = 0; irow < cNRow; irow++) { |
---|
1477 | if (sel[irow]) { |
---|
1478 | positions[isel++] = ra[irow] * D2R; |
---|
1479 | positions[isel++] = dec[irow] * D2R; |
---|
1480 | } |
---|
1481 | } |
---|
1482 | |
---|
1483 | } else if (cCoordSys == 2) { |
---|
1484 | // Feed-plane. |
---|
1485 | if (cData[OBJ_RA].colnum < 0 || |
---|
1486 | cData[OBJ_DEC].colnum < 0 || |
---|
1487 | cData[PARANGLE].colnum < 0 || |
---|
1488 | cData[FOCUSROT].colnum < 0) { |
---|
1489 | log( LogOrigin( className, methodName, WHERE ), LogIO::WARN, |
---|
1490 | "Insufficient information to compute feed-plane\n" |
---|
1491 | " coordinates."); |
---|
1492 | cStatus = -1; |
---|
1493 | |
---|
1494 | } else { |
---|
1495 | double *srcRA = new double[cNRow]; |
---|
1496 | double *srcDec = new double[cNRow]; |
---|
1497 | float *par = new float[cNRow]; |
---|
1498 | float *rot = new float[cNRow]; |
---|
1499 | |
---|
1500 | readCol(OBJ_RA, srcRA); |
---|
1501 | readCol(OBJ_DEC, srcDec); |
---|
1502 | readCol(PARANGLE, par); |
---|
1503 | readCol(FOCUSROT, rot); |
---|
1504 | |
---|
1505 | if (!cStatus) { |
---|
1506 | for (int irow = 0; irow < cNRow; irow++) { |
---|
1507 | if (sel[irow]) { |
---|
1508 | // Convert to feed-plane coordinates. |
---|
1509 | Double dist, pa; |
---|
1510 | distPA(ra[irow]*D2R, dec[irow]*D2R, srcRA[irow]*D2R, |
---|
1511 | srcDec[irow]*D2R, dist, pa); |
---|
1512 | |
---|
1513 | Double spin = (par[irow] + rot[irow])*D2R - pa; |
---|
1514 | if (spin > 2.0*PI) spin -= 2.0*PI; |
---|
1515 | Double squint = PI/2.0 - dist; |
---|
1516 | |
---|
1517 | positions[isel++] = spin; |
---|
1518 | positions[isel++] = squint; |
---|
1519 | } |
---|
1520 | } |
---|
1521 | } |
---|
1522 | |
---|
1523 | delete [] srcRA; |
---|
1524 | delete [] srcDec; |
---|
1525 | delete [] par; |
---|
1526 | delete [] rot; |
---|
1527 | } |
---|
1528 | } |
---|
1529 | |
---|
1530 | delete [] ra; |
---|
1531 | delete [] dec; |
---|
1532 | } |
---|
1533 | |
---|
1534 | cleanup: |
---|
1535 | delete [] sel; |
---|
1536 | |
---|
1537 | if (cStatus) { |
---|
1538 | nSel = 0; |
---|
1539 | delete [] positions; |
---|
1540 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE); |
---|
1541 | cStatus = 0; |
---|
1542 | return 1; |
---|
1543 | } |
---|
1544 | |
---|
1545 | return 0; |
---|
1546 | } |
---|
1547 | |
---|
1548 | |
---|
1549 | //--------------------------------------------------------- GBTFITSreader::read |
---|
1550 | |
---|
1551 | // Read the next data record. |
---|
1552 | |
---|
1553 | int GBTFITSreader::read( |
---|
1554 | MBrecord &mbrec) |
---|
1555 | { |
---|
1556 | const string methodName = "read()" ; |
---|
1557 | |
---|
1558 | // for multiple binary table |
---|
1559 | long cRowR = -1 ; |
---|
1560 | |
---|
1561 | // Has the file been opened? |
---|
1562 | if (!cSDptr) { |
---|
1563 | return 1; |
---|
1564 | } |
---|
1565 | // Find the next selected beam and IF. |
---|
1566 | short iBeam = 0, iIF = 0; |
---|
1567 | int iPol = -1 ; |
---|
1568 | while (1) { |
---|
1569 | if (++cTimeIdx > cNAxisTime) { |
---|
1570 | if (++cRow > cNRow) break; |
---|
1571 | cTimeIdx = 1; |
---|
1572 | } |
---|
1573 | |
---|
1574 | //cRowR = cRow ; |
---|
1575 | cRowR = cRowRelative( cRow ) ; |
---|
1576 | |
---|
1577 | if (cData[BEAM].colnum > 0) { |
---|
1578 | readData(BEAM, cRowR, &iBeam); |
---|
1579 | |
---|
1580 | // Convert to 0-relative. |
---|
1581 | if (cBeam_1rel) iBeam--; |
---|
1582 | } |
---|
1583 | |
---|
1584 | |
---|
1585 | if (cBeams[iBeam]) { |
---|
1586 | if (cData[IF].colnum > 0) { |
---|
1587 | readData(IF, cRowR, &iIF); |
---|
1588 | |
---|
1589 | // Convert to 0-relative. |
---|
1590 | if (cIF_1rel) iIF--; |
---|
1591 | } |
---|
1592 | |
---|
1593 | if (cIFs[iIF]) { |
---|
1594 | if (cALFA) { |
---|
1595 | // ALFA data, check for calibration data. |
---|
1596 | char chars[32]; |
---|
1597 | readData(OBSMODE, cRowR, chars); |
---|
1598 | if (strcmp(chars, "DROP") == 0) { |
---|
1599 | // Completely flagged integration. |
---|
1600 | continue; |
---|
1601 | |
---|
1602 | } else if (strcmp(chars, "CAL") == 0) { |
---|
1603 | sReset = 1; |
---|
1604 | if (cALFA_CIMA > 1) { |
---|
1605 | for (short iPol = 0; iPol < cNPol[iIF]; iPol++) { |
---|
1606 | alfaCal(iBeam, iIF, iPol); |
---|
1607 | } |
---|
1608 | continue; |
---|
1609 | } else { |
---|
1610 | // iIF is really the polarization in older ALFA data. |
---|
1611 | alfaCal(iBeam, 0, iIF); |
---|
1612 | continue; |
---|
1613 | } |
---|
1614 | |
---|
1615 | } else { |
---|
1616 | // Reset for the next CAL record. |
---|
1617 | if (sReset) { |
---|
1618 | for (short iPol = 0; iPol < cNPol[iIF]; iPol++) { |
---|
1619 | sALFAcalNon[iBeam][iPol] = 0; |
---|
1620 | sALFAcalNoff[iBeam][iPol] = 0; |
---|
1621 | sALFAcalOn[iBeam][iPol] = 0.0f; |
---|
1622 | sALFAcalOff[iBeam][iPol] = 0.0f; |
---|
1623 | } |
---|
1624 | sReset = 0; |
---|
1625 | |
---|
1626 | sprintf(cMsg, "ALFA cal factors for beam %d: %.3e, %.3e", |
---|
1627 | iBeam+1, sALFAcal[iBeam][0], sALFAcal[iBeam][1]); |
---|
1628 | log(LogOrigin( className, methodName, WHERE ), LogIO::NORMAL, cMsg); |
---|
1629 | //logMsg(cMsg); |
---|
1630 | } |
---|
1631 | } |
---|
1632 | } |
---|
1633 | |
---|
1634 | // for GBT SDFITS |
---|
1635 | if (cData[STOKES].colnum > 0 ) { |
---|
1636 | readData(STOKES, cRowR, &iPol ) ; |
---|
1637 | for ( int i = 0 ; i < cNPol[iIF] ; i++ ) { |
---|
1638 | if ( cPols[i] == iPol ) { |
---|
1639 | iPol = i ; |
---|
1640 | break ; |
---|
1641 | } |
---|
1642 | } |
---|
1643 | } |
---|
1644 | break; |
---|
1645 | } |
---|
1646 | } |
---|
1647 | } |
---|
1648 | |
---|
1649 | // EOF? |
---|
1650 | if (cRow > cNRow) { |
---|
1651 | return -1; |
---|
1652 | } |
---|
1653 | |
---|
1654 | int idx_GBT = 0 ; |
---|
1655 | if ( numHDU > 1 ) { |
---|
1656 | char sampler[10]; |
---|
1657 | readData(SAMPLER,cRowR,sampler); |
---|
1658 | readData(RESTFRQ, cRowR, &mbrec.restFreq); |
---|
1659 | int iiIF = 0 ; |
---|
1660 | int hduid ; |
---|
1661 | fits_get_hdu_num( cSDptr, &hduid ) ; |
---|
1662 | while ( iiIF < numHDU && hduId[iiIF] != hduid ) { |
---|
1663 | //iiIF++ ; |
---|
1664 | idx_GBT += cNumKeys[iiIF++] ; |
---|
1665 | } |
---|
1666 | char sarf[48] ; |
---|
1667 | sprintf( sarf, "%d/%s/%lf", iiIF, sampler, mbrec.restFreq ) ; |
---|
1668 | String sr = String( sarf ) ; |
---|
1669 | while ( idx_GBT < (int)cRefValKey.size() && sr != cRefValKey[idx_GBT] ) |
---|
1670 | idx_GBT++ ; |
---|
1671 | iIF = (short)cIFNO[idx_GBT] ; |
---|
1672 | sprintf( cMsg, "iIF = %d (key=%s), cRow = %ld" , iIF, sarf, cRow ) ; |
---|
1673 | log( LogOrigin( className, methodName, WHERE ), LogIO::DEBUGGING, cMsg ) ; |
---|
1674 | } |
---|
1675 | |
---|
1676 | if (cALFA) { |
---|
1677 | int scanNo; |
---|
1678 | readData(SCAN, cRowR, &scanNo); |
---|
1679 | if (scanNo != cALFAscan) { |
---|
1680 | cScanNo++; |
---|
1681 | cALFAscan = scanNo; |
---|
1682 | } |
---|
1683 | mbrec.scanNo = cScanNo; |
---|
1684 | |
---|
1685 | } else { |
---|
1686 | readData(SCAN, cRowR, &mbrec.scanNo); |
---|
1687 | |
---|
1688 | // Ensure that scan number is 1-relative. |
---|
1689 | mbrec.scanNo -= (cFirstScanNo - 1); |
---|
1690 | } |
---|
1691 | |
---|
1692 | // Times. |
---|
1693 | char datobs[32]; |
---|
1694 | readTime(cRowR, cTimeIdx, datobs, mbrec.utc); |
---|
1695 | strcpy(mbrec.datobs, datobs); |
---|
1696 | |
---|
1697 | if (cData[CYCLE].colnum > 0) { |
---|
1698 | readData(CYCLE, cRowR, &mbrec.cycleNo); |
---|
1699 | mbrec.cycleNo += cTimeIdx - 1; |
---|
1700 | if (cALFA_BD) mbrec.cycleNo++; |
---|
1701 | } else { |
---|
1702 | // Cycle number not recorded, must do our own bookkeeping. |
---|
1703 | if (mbrec.utc != cLastUTC) { |
---|
1704 | mbrec.cycleNo = ++cCycleNo; |
---|
1705 | cLastUTC = mbrec.utc; |
---|
1706 | } |
---|
1707 | } |
---|
1708 | |
---|
1709 | if ( iPol != -1 ) { |
---|
1710 | if ( mbrec.scanNo != cGLastScan[iPol] ) { |
---|
1711 | cGLastScan[iPol] = mbrec.scanNo ; |
---|
1712 | cGCycleNo[iPol] = 0 ; |
---|
1713 | mbrec.cycleNo = ++cGCycleNo[iPol] ; |
---|
1714 | } |
---|
1715 | else { |
---|
1716 | mbrec.cycleNo = ++cGCycleNo[iPol] ; |
---|
1717 | } |
---|
1718 | } |
---|
1719 | |
---|
1720 | readData(EXPOSURE, cRowR, &mbrec.exposure); |
---|
1721 | |
---|
1722 | // Source identification. |
---|
1723 | readData(OBJECT, cRowR, mbrec.srcName); |
---|
1724 | |
---|
1725 | if ( iPol != -1 ) { |
---|
1726 | char obsmode[32] ; |
---|
1727 | readData( OBSMODE, cRowR, obsmode ) ; |
---|
1728 | char sig[1] ; |
---|
1729 | char cal[1] ; |
---|
1730 | readData( SIG, cRowR, sig ) ; |
---|
1731 | readData( CAL, cRowR, cal ) ; |
---|
1732 | if ( strstr( obsmode, "PSWITCH" ) != NULL ) { |
---|
1733 | // position switch |
---|
1734 | //strcat( mbrec.srcName, "_p" ) ; |
---|
1735 | if ( strstr( obsmode, "PSWITCHON" ) != NULL ) { |
---|
1736 | //strcat( mbrec.srcName, "s" ) ; |
---|
1737 | mbrec.srcType = SrcType::PSON ; |
---|
1738 | } |
---|
1739 | else if ( strstr( obsmode, "PSWITCHOFF" ) != NULL ) { |
---|
1740 | //strcat( mbrec.srcName, "r" ) ; |
---|
1741 | mbrec.srcType = SrcType::PSOFF ; |
---|
1742 | } |
---|
1743 | } |
---|
1744 | else if ( strstr( obsmode, "Nod" ) != NULL ) { |
---|
1745 | // nod |
---|
1746 | //strcat( mbrec.srcName, "_n" ) ; |
---|
1747 | mbrec.srcType = SrcType::NOD ; |
---|
1748 | if ( sig[0] == 'T' ) { |
---|
1749 | //strcat( mbrec.srcName, "s" ) ; |
---|
1750 | } |
---|
1751 | else { |
---|
1752 | //strcat( mbrec.srcName, "r" ) ; |
---|
1753 | } |
---|
1754 | } |
---|
1755 | else if ( strstr( obsmode, "FSWITCH" ) != NULL ) { |
---|
1756 | // frequency switch |
---|
1757 | //strcat( mbrec.srcName, "_f" ) ; |
---|
1758 | if ( sig[0] == 'T' ) { |
---|
1759 | //strcat( mbrec.srcName, "s" ) ; |
---|
1760 | mbrec.srcType = SrcType::FSON ; |
---|
1761 | } |
---|
1762 | else { |
---|
1763 | //strcat( mbrec.srcName, "r" ) ; |
---|
1764 | mbrec.srcType = SrcType::FSOFF ; |
---|
1765 | } |
---|
1766 | } |
---|
1767 | if ( cal[0] == 'T' ) { |
---|
1768 | //strcat( mbrec.srcName, "c" ) ; |
---|
1769 | if ( mbrec.srcType == SrcType::PSON ) |
---|
1770 | mbrec.srcType = SrcType::PONCAL ; |
---|
1771 | else if ( mbrec.srcType == SrcType::PSOFF ) |
---|
1772 | mbrec.srcType = SrcType::POFFCAL ; |
---|
1773 | else if ( mbrec.srcType == SrcType::NOD ) |
---|
1774 | mbrec.srcType = SrcType::NODCAL ; |
---|
1775 | else if ( mbrec.srcType == SrcType::FSON ) |
---|
1776 | mbrec.srcType = SrcType::FONCAL ; |
---|
1777 | else if ( mbrec.srcType == SrcType::FSOFF ) |
---|
1778 | mbrec.srcType = SrcType::FOFFCAL ; |
---|
1779 | } |
---|
1780 | else { |
---|
1781 | //strcat( mbrec.srcName, "o" ) ; |
---|
1782 | } |
---|
1783 | } |
---|
1784 | |
---|
1785 | readData(OBJ_RA, cRowR, &mbrec.srcRA); |
---|
1786 | if (strcmp(cData[OBJ_RA].name, "OBJ-RA") == 0) { |
---|
1787 | mbrec.srcRA *= D2R; |
---|
1788 | } |
---|
1789 | |
---|
1790 | if (strcmp(cData[OBJ_DEC].name, "OBJ-DEC") == 0) { |
---|
1791 | readData(OBJ_DEC, cRowR, &mbrec.srcDec); |
---|
1792 | mbrec.srcDec *= D2R; |
---|
1793 | } |
---|
1794 | |
---|
1795 | // Line rest frequency (Hz). |
---|
1796 | readData(RESTFRQ, cRowR, &mbrec.restFreq); |
---|
1797 | if (mbrec.restFreq == 0.0 && cALFA_BD) { |
---|
1798 | mbrec.restFreq = 1420.40575e6; |
---|
1799 | } |
---|
1800 | |
---|
1801 | // Observation mode. |
---|
1802 | readData(OBSMODE, cRowR, mbrec.obsType); |
---|
1803 | |
---|
1804 | // Beam-dependent parameters. |
---|
1805 | mbrec.beamNo = iBeam + 1; |
---|
1806 | |
---|
1807 | readData(RA, cRowR, &mbrec.ra); |
---|
1808 | readData(DEC, cRowR, &mbrec.dec); |
---|
1809 | mbrec.ra *= D2R; |
---|
1810 | mbrec.dec *= D2R; |
---|
1811 | |
---|
1812 | if (cALFA_BD) mbrec.ra *= 15.0; |
---|
1813 | |
---|
1814 | float scanrate[2]; |
---|
1815 | readData(SCANRATE, cRowR, &scanrate); |
---|
1816 | if (strcmp(cData[SCANRATE].name, "SCANRATE") == 0) { |
---|
1817 | mbrec.raRate = scanrate[0] * D2R; |
---|
1818 | mbrec.decRate = scanrate[1] * D2R; |
---|
1819 | } |
---|
1820 | mbrec.paRate = 0.0f; |
---|
1821 | |
---|
1822 | // IF-dependent parameters. |
---|
1823 | int startChan = cStartChan[iIF]; |
---|
1824 | int endChan = cEndChan[iIF]; |
---|
1825 | int refChan = cRefChan[iIF]; |
---|
1826 | |
---|
1827 | // Allocate data storage. |
---|
1828 | int nChan = abs(endChan - startChan) + 1; |
---|
1829 | int nPol = cNPol[iIF]; |
---|
1830 | |
---|
1831 | if ( cData[STOKES].colnum > 0 ) |
---|
1832 | nPol = 1 ; |
---|
1833 | |
---|
1834 | if (cGetSpectra || cGetXPol) { |
---|
1835 | int nxpol = cGetXPol ? 2*nChan : 0; |
---|
1836 | mbrec.allocate(0, nChan*nPol, nxpol); |
---|
1837 | } |
---|
1838 | |
---|
1839 | mbrec.nIF = 1; |
---|
1840 | mbrec.IFno[0] = iIF + 1; |
---|
1841 | mbrec.nChan[0] = nChan; |
---|
1842 | mbrec.nPol[0] = nPol; |
---|
1843 | mbrec.polNo = iPol ; |
---|
1844 | |
---|
1845 | readData(FqRefPix, cRowR, mbrec.fqRefPix); |
---|
1846 | readData(FqRefVal, cRowR, mbrec.fqRefVal); |
---|
1847 | readData(FqDelt, cRowR, mbrec.fqDelt); |
---|
1848 | |
---|
1849 | // Convert frequency reference to LSRK if GBT TOPO |
---|
1850 | if ( cGBT && numHDU > 1 ) { |
---|
1851 | char sampler[10]; |
---|
1852 | readData(SAMPLER,cRowR,sampler); |
---|
1853 | //Double fqrefval = getRefValLSR( cRow, idx_GBT, sampler, mbrec.restFreq ) ; |
---|
1854 | sprintf( cMsg, "Row %ld (%s): reference frequency %lf", cRow, sampler, cRefVal[idx_GBT] ) ; |
---|
1855 | log( LogOrigin( className, methodName, WHERE ), LogIO::DEBUGGING, cMsg ) ; |
---|
1856 | |
---|
1857 | if ( idx_GBT == (int)cRefValKey.size() ) { |
---|
1858 | log( LogOrigin( className, methodName, WHERE ), LogIO::SEVERE, "Failed to get reference frequency value" ) ; |
---|
1859 | mbrec.fqRefVal[0] = 0.0 ; |
---|
1860 | } |
---|
1861 | else { |
---|
1862 | mbrec.fqRefVal[0] = (double)cRefVal[idx_GBT] ; |
---|
1863 | } |
---|
1864 | } |
---|
1865 | |
---|
1866 | if (cALFA_BD) { |
---|
1867 | unsigned char invert; |
---|
1868 | int anynul, colnum; |
---|
1869 | findCol((char *)"UPPERSB", &colnum); |
---|
1870 | fits_read_col(cSDptr, TBYTE, colnum, cRow, 1, 1, 0, &invert, &anynul, |
---|
1871 | &cStatus); |
---|
1872 | |
---|
1873 | if (invert) { |
---|
1874 | mbrec.fqDelt[0] = -mbrec.fqDelt[0]; |
---|
1875 | } |
---|
1876 | } |
---|
1877 | |
---|
1878 | if (cStatus) { |
---|
1879 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE); |
---|
1880 | return 1; |
---|
1881 | } |
---|
1882 | |
---|
1883 | // Adjust for channel selection. |
---|
1884 | if (mbrec.fqRefPix[0] != refChan) { |
---|
1885 | mbrec.fqRefVal[0] += (refChan - mbrec.fqRefPix[0]) * mbrec.fqDelt[0]; |
---|
1886 | mbrec.fqRefPix[0] = refChan; |
---|
1887 | } |
---|
1888 | |
---|
1889 | if (endChan < startChan) { |
---|
1890 | mbrec.fqDelt[0] = -mbrec.fqDelt[0]; |
---|
1891 | } |
---|
1892 | |
---|
1893 | // The data may only have a scalar Tsys value. |
---|
1894 | mbrec.tsys[0][0] = 0.0f; |
---|
1895 | mbrec.tsys[0][1] = 0.0f; |
---|
1896 | if (cData[TSYS].nelem >= nPol) { |
---|
1897 | readData(TSYS, cRowR, mbrec.tsys[0]); |
---|
1898 | } |
---|
1899 | |
---|
1900 | for (int j = 0; j < 2; j++) { |
---|
1901 | mbrec.calfctr[0][j] = 0.0f; |
---|
1902 | } |
---|
1903 | if (cData[CALFCTR].colnum > 0) { |
---|
1904 | readData(CALFCTR, cRowR, mbrec.calfctr); |
---|
1905 | } |
---|
1906 | |
---|
1907 | if (cHaveBase) { |
---|
1908 | mbrec.haveBase = 1; |
---|
1909 | readData(BASELIN, cRowR, mbrec.baseLin); |
---|
1910 | readData(BASESUB, cRowR, mbrec.baseSub); |
---|
1911 | } else { |
---|
1912 | mbrec.haveBase = 0; |
---|
1913 | } |
---|
1914 | |
---|
1915 | if (cStatus) { |
---|
1916 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE); |
---|
1917 | return 1; |
---|
1918 | } |
---|
1919 | |
---|
1920 | // Read data, sectioning and transposing it in the process. |
---|
1921 | long *blc = new long[cNAxes+1]; |
---|
1922 | long *trc = new long[cNAxes+1]; |
---|
1923 | long *inc = new long[cNAxes+1]; |
---|
1924 | for (int iaxis = 0; iaxis <= cNAxes; iaxis++) { |
---|
1925 | blc[iaxis] = 1; |
---|
1926 | trc[iaxis] = 1; |
---|
1927 | inc[iaxis] = 1; |
---|
1928 | } |
---|
1929 | |
---|
1930 | blc[cFreqAxis] = std::min(startChan, endChan); |
---|
1931 | trc[cFreqAxis] = std::max(startChan, endChan); |
---|
1932 | if (cTimeAxis >= 0) { |
---|
1933 | blc[cTimeAxis] = cTimeIdx; |
---|
1934 | trc[cTimeAxis] = cTimeIdx; |
---|
1935 | } |
---|
1936 | blc[cNAxes] = cRowR; |
---|
1937 | trc[cNAxes] = cRowR; |
---|
1938 | |
---|
1939 | mbrec.haveSpectra = cGetSpectra; |
---|
1940 | if (cGetSpectra) { |
---|
1941 | int anynul; |
---|
1942 | |
---|
1943 | for (int iPol = 0; iPol < nPol; iPol++) { |
---|
1944 | blc[cStokesAxis] = iPol+1; |
---|
1945 | trc[cStokesAxis] = iPol+1; |
---|
1946 | |
---|
1947 | if (cALFA && cALFA_CIMA < 2) { |
---|
1948 | // ALFA data: polarizations are stored in successive rows. |
---|
1949 | blc[cStokesAxis] = 1; |
---|
1950 | trc[cStokesAxis] = 1; |
---|
1951 | |
---|
1952 | if (iPol) { |
---|
1953 | if (++cRow > cNRow) { |
---|
1954 | return -1; |
---|
1955 | } |
---|
1956 | |
---|
1957 | blc[cNAxes] = cRowR; |
---|
1958 | trc[cNAxes] = cRowR; |
---|
1959 | } |
---|
1960 | |
---|
1961 | } else if (cData[DATA].nelem < 0) { |
---|
1962 | // Variable dimension array; get axis lengths. |
---|
1963 | int naxes = 5, status; |
---|
1964 | |
---|
1965 | if ((status = readDim(DATA, cRowR, &naxes, cNAxis))) { |
---|
1966 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE); |
---|
1967 | |
---|
1968 | } else if ((status = (naxes != cNAxes))) { |
---|
1969 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE, "DATA array dimensions changed."); |
---|
1970 | } |
---|
1971 | |
---|
1972 | if (status) { |
---|
1973 | delete [] blc; |
---|
1974 | delete [] trc; |
---|
1975 | delete [] inc; |
---|
1976 | return 1; |
---|
1977 | } |
---|
1978 | } |
---|
1979 | |
---|
1980 | if (fits_read_subset_flt(cSDptr, cData[DATA].colnum, cNAxes, cNAxis, |
---|
1981 | blc, trc, inc, 0, mbrec.spectra[0] + iPol*nChan, &anynul, |
---|
1982 | &cStatus)) { |
---|
1983 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE); |
---|
1984 | delete [] blc; |
---|
1985 | delete [] trc; |
---|
1986 | delete [] inc; |
---|
1987 | return 1; |
---|
1988 | } |
---|
1989 | |
---|
1990 | if (endChan < startChan) { |
---|
1991 | // Reverse the spectrum. |
---|
1992 | float *iptr = mbrec.spectra[0] + iPol*nChan; |
---|
1993 | float *jptr = iptr + nChan - 1; |
---|
1994 | float *mid = iptr + nChan/2; |
---|
1995 | while (iptr < mid) { |
---|
1996 | float tmp = *iptr; |
---|
1997 | *(iptr++) = *jptr; |
---|
1998 | *(jptr--) = tmp; |
---|
1999 | } |
---|
2000 | } |
---|
2001 | |
---|
2002 | if (cALFA) { |
---|
2003 | // ALFA data, rescale the spectrum. |
---|
2004 | float el, zd; |
---|
2005 | readData(ELEVATIO, cRowR, &el); |
---|
2006 | zd = 90.0f - el; |
---|
2007 | |
---|
2008 | float factor = sALFAcal[iBeam][iPol] / alfaGain(zd); |
---|
2009 | |
---|
2010 | if (cALFA_CIMA > 1) { |
---|
2011 | // Rescale according to the number of unblanked accumulations. |
---|
2012 | int colnum, naccum; |
---|
2013 | findCol((char *)"STAT", &colnum); |
---|
2014 | fits_read_col(cSDptr, TINT, colnum, cRowR, 10*(cTimeIdx-1)+2, 1, 0, |
---|
2015 | &naccum, &anynul, &cStatus); |
---|
2016 | factor *= cALFAacc / naccum; |
---|
2017 | } |
---|
2018 | |
---|
2019 | float *chan = mbrec.spectra[0] + iPol*nChan; |
---|
2020 | float *chanN = chan + nChan; |
---|
2021 | while (chan < chanN) { |
---|
2022 | // Approximate conversion to Jy. |
---|
2023 | *(chan++) *= factor; |
---|
2024 | } |
---|
2025 | } |
---|
2026 | |
---|
2027 | if (mbrec.tsys[0][iPol] == 0.0) { |
---|
2028 | // Compute Tsys as the average across the spectrum. |
---|
2029 | float *chan = mbrec.spectra[0] + iPol*nChan; |
---|
2030 | float *chanN = chan + nChan; |
---|
2031 | float *tsys = mbrec.tsys[0] + iPol; |
---|
2032 | while (chan < chanN) { |
---|
2033 | *tsys += *(chan++); |
---|
2034 | } |
---|
2035 | |
---|
2036 | *tsys /= nChan; |
---|
2037 | } |
---|
2038 | |
---|
2039 | // Read data flags. |
---|
2040 | if (cData[FLAGGED].colnum > 0) { |
---|
2041 | if (fits_read_subset_byt(cSDptr, cData[FLAGGED].colnum, cNAxes, |
---|
2042 | cNAxis, blc, trc, inc, 0, mbrec.flagged[0] + iPol*nChan, &anynul, |
---|
2043 | &cStatus)) { |
---|
2044 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE); |
---|
2045 | delete [] blc; |
---|
2046 | delete [] trc; |
---|
2047 | delete [] inc; |
---|
2048 | return 1; |
---|
2049 | } |
---|
2050 | |
---|
2051 | if (endChan < startChan) { |
---|
2052 | // Reverse the flag vector. |
---|
2053 | unsigned char *iptr = mbrec.flagged[0] + iPol*nChan; |
---|
2054 | unsigned char *jptr = iptr + nChan - 1; |
---|
2055 | for (int ichan = 0; ichan < nChan/2; ichan++) { |
---|
2056 | unsigned char tmp = *iptr; |
---|
2057 | *(iptr++) = *jptr; |
---|
2058 | *(jptr--) = tmp; |
---|
2059 | } |
---|
2060 | } |
---|
2061 | |
---|
2062 | } else { |
---|
2063 | // All channels are unflagged by default. |
---|
2064 | unsigned char *iptr = mbrec.flagged[0] + iPol*nChan; |
---|
2065 | for (int ichan = 0; ichan < nChan; ichan++) { |
---|
2066 | *(iptr++) = 0; |
---|
2067 | } |
---|
2068 | } |
---|
2069 | } |
---|
2070 | } |
---|
2071 | |
---|
2072 | |
---|
2073 | // Read cross-polarization data. |
---|
2074 | if (cGetXPol) { |
---|
2075 | int anynul; |
---|
2076 | for (int j = 0; j < 2; j++) { |
---|
2077 | mbrec.xcalfctr[0][j] = 0.0f; |
---|
2078 | } |
---|
2079 | if (cData[XCALFCTR].colnum > 0) { |
---|
2080 | readData(XCALFCTR, cRowR, mbrec.xcalfctr); |
---|
2081 | } |
---|
2082 | |
---|
2083 | blc[0] = 1; |
---|
2084 | trc[0] = 2; |
---|
2085 | blc[1] = std::min(startChan, endChan); |
---|
2086 | trc[1] = std::max(startChan, endChan); |
---|
2087 | blc[2] = cRowR; |
---|
2088 | trc[2] = cRowR; |
---|
2089 | |
---|
2090 | int nAxis = 2; |
---|
2091 | long nAxes[] = {2, nChan}; |
---|
2092 | |
---|
2093 | if (fits_read_subset_flt(cSDptr, cData[XPOLDATA].colnum, nAxis, nAxes, |
---|
2094 | blc, trc, inc, 0, mbrec.xpol[0], &anynul, &cStatus)) { |
---|
2095 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE); |
---|
2096 | delete [] blc; |
---|
2097 | delete [] trc; |
---|
2098 | delete [] inc; |
---|
2099 | return 1; |
---|
2100 | } |
---|
2101 | |
---|
2102 | if (endChan < startChan) { |
---|
2103 | // Invert the cross-polarization spectrum. |
---|
2104 | float *iptr = mbrec.xpol[0]; |
---|
2105 | float *jptr = iptr + nChan - 2; |
---|
2106 | for (int ichan = 0; ichan < nChan/2; ichan++) { |
---|
2107 | float tmp = *iptr; |
---|
2108 | *iptr = *jptr; |
---|
2109 | *jptr = tmp; |
---|
2110 | |
---|
2111 | tmp = *(iptr+1); |
---|
2112 | *(iptr+1) = *(jptr+1); |
---|
2113 | *(jptr+1) = tmp; |
---|
2114 | |
---|
2115 | iptr += 2; |
---|
2116 | jptr -= 2; |
---|
2117 | } |
---|
2118 | } |
---|
2119 | } |
---|
2120 | |
---|
2121 | delete [] blc; |
---|
2122 | delete [] trc; |
---|
2123 | delete [] inc; |
---|
2124 | |
---|
2125 | if (cStatus) { |
---|
2126 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE); |
---|
2127 | return 1; |
---|
2128 | } |
---|
2129 | |
---|
2130 | mbrec.extraSysCal = cExtraSysCal; |
---|
2131 | readData(REFBEAM, cRowR, &mbrec.refBeam); |
---|
2132 | readData(TCAL, cRowR, &mbrec.tcal[0]); |
---|
2133 | readData(TCALTIME, cRowR, mbrec.tcalTime); |
---|
2134 | |
---|
2135 | readData(AZIMUTH, cRowR, &mbrec.azimuth); |
---|
2136 | readData(ELEVATIO, cRowR, &mbrec.elevation); |
---|
2137 | readData(PARANGLE, cRowR, &mbrec.parAngle); |
---|
2138 | |
---|
2139 | readData(FOCUSAXI, cRowR, &mbrec.focusAxi); |
---|
2140 | readData(FOCUSTAN, cRowR, &mbrec.focusTan); |
---|
2141 | readData(FOCUSROT, cRowR, &mbrec.focusRot); |
---|
2142 | |
---|
2143 | readData(TAMBIENT, cRowR, &mbrec.temp); |
---|
2144 | readData(PRESSURE, cRowR, &mbrec.pressure); |
---|
2145 | readData(HUMIDITY, cRowR, &mbrec.humidity); |
---|
2146 | readData(WINDSPEE, cRowR, &mbrec.windSpeed); |
---|
2147 | readData(WINDDIRE, cRowR, &mbrec.windAz); |
---|
2148 | |
---|
2149 | if (cALFA_BD) { |
---|
2150 | // ALFA BDFITS stores zenith angle rather than elevation. |
---|
2151 | mbrec.elevation = 90.0 - mbrec.elevation; |
---|
2152 | } |
---|
2153 | |
---|
2154 | mbrec.azimuth *= D2R; |
---|
2155 | mbrec.elevation *= D2R; |
---|
2156 | mbrec.parAngle *= D2R; |
---|
2157 | mbrec.focusRot *= D2R; |
---|
2158 | mbrec.windAz *= D2R; |
---|
2159 | |
---|
2160 | // For GBT data, source velocity can be evaluated |
---|
2161 | if ( cData[RVSYS].colnum > 0 && cData[VFRAME].colnum > 0 ) { |
---|
2162 | double vframe; |
---|
2163 | readData(VFRAME, cRowR, &vframe); |
---|
2164 | double rvsys; |
---|
2165 | readData(RVSYS, cRowR, &rvsys); |
---|
2166 | //mbrec.srcVelocity = rvsys - vframe ; |
---|
2167 | mbrec.srcVelocity = rvsys ; |
---|
2168 | } |
---|
2169 | |
---|
2170 | if (cStatus) { |
---|
2171 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE); |
---|
2172 | return 1; |
---|
2173 | } |
---|
2174 | |
---|
2175 | return 0; |
---|
2176 | } |
---|
2177 | |
---|
2178 | //-------------------------------------------------------- GBTFITSreader::close |
---|
2179 | |
---|
2180 | // Close the SDFITS file. |
---|
2181 | |
---|
2182 | void GBTFITSreader::close() |
---|
2183 | { |
---|
2184 | if (cSDptr) { |
---|
2185 | int status = 0; |
---|
2186 | fits_close_file(cSDptr, &status); |
---|
2187 | cSDptr = 0x0; |
---|
2188 | |
---|
2189 | if (cBeams) delete [] cBeams; |
---|
2190 | if (cIFs) delete [] cIFs; |
---|
2191 | if (cStartChan) delete [] cStartChan; |
---|
2192 | if (cEndChan) delete [] cEndChan; |
---|
2193 | if (cRefChan) delete [] cRefChan; |
---|
2194 | if (cNRowT) delete [] cNRowT; |
---|
2195 | if (cNRowCum) delete [] cNRowCum; |
---|
2196 | if (hduId) delete [] hduId; |
---|
2197 | } |
---|
2198 | } |
---|
2199 | |
---|
2200 | //------------------------------------------------------- GBTFITSreader::log |
---|
2201 | |
---|
2202 | // Log a message. If the current CFITSIO status value is non-zero, also log |
---|
2203 | // the corresponding error message and the CFITSIO message stack. |
---|
2204 | |
---|
2205 | void GBTFITSreader::log(LogOrigin origin, LogIO::Command cmd, const char *msg) |
---|
2206 | { |
---|
2207 | LogIO os( origin ) ; |
---|
2208 | |
---|
2209 | os << cmd ; |
---|
2210 | |
---|
2211 | os << msg << endl ; |
---|
2212 | |
---|
2213 | if (cStatus > 0) { |
---|
2214 | fits_get_errstatus(cStatus, cMsg); |
---|
2215 | os << cMsg << endl ; |
---|
2216 | |
---|
2217 | while (fits_read_errmsg(cMsg)) { |
---|
2218 | os << cMsg << endl ; |
---|
2219 | } |
---|
2220 | } |
---|
2221 | os << LogIO::POST ; |
---|
2222 | } |
---|
2223 | |
---|
2224 | //----------------------------------------------------- GBTFITSreader::findData |
---|
2225 | |
---|
2226 | // Locate a data item in the SDFITS file. |
---|
2227 | |
---|
2228 | void GBTFITSreader::findData( |
---|
2229 | int iData, |
---|
2230 | char *name, |
---|
2231 | int type) |
---|
2232 | { |
---|
2233 | cData[iData].name = name; |
---|
2234 | cData[iData].type = type; |
---|
2235 | |
---|
2236 | int colnum; |
---|
2237 | findCol(name, &colnum); |
---|
2238 | cData[iData].colnum = colnum; |
---|
2239 | |
---|
2240 | // Determine the number of data elements. |
---|
2241 | if (colnum > 0) { |
---|
2242 | int coltype; |
---|
2243 | long nelem, width; |
---|
2244 | fits_get_coltype(cSDptr, colnum, &coltype, &nelem, &width, &cStatus); |
---|
2245 | fits_get_bcolparms(cSDptr, colnum, 0x0, cData[iData].units, 0x0, 0x0, 0x0, |
---|
2246 | 0x0, 0x0, 0x0, &cStatus); |
---|
2247 | |
---|
2248 | // Look for a TDIMnnn keyword or column. |
---|
2249 | char tdim[8]; |
---|
2250 | sprintf(tdim, "TDIM%d", colnum); |
---|
2251 | findCol(tdim, &cData[iData].tdimcol); |
---|
2252 | |
---|
2253 | if (coltype < 0) { |
---|
2254 | // CFITSIO returns coltype < 0 for variable length arrays. |
---|
2255 | cData[iData].coltype = -coltype; |
---|
2256 | cData[iData].nelem = -nelem; |
---|
2257 | |
---|
2258 | } else { |
---|
2259 | cData[iData].coltype = coltype; |
---|
2260 | |
---|
2261 | // Is there a TDIMnnn column? |
---|
2262 | if (cData[iData].tdimcol > 0) { |
---|
2263 | // Yes, dimensions of the fixed-length array could still vary. |
---|
2264 | cData[iData].nelem = -nelem; |
---|
2265 | } else { |
---|
2266 | cData[iData].nelem = nelem; |
---|
2267 | } |
---|
2268 | } |
---|
2269 | |
---|
2270 | } else if (colnum == 0) { |
---|
2271 | // Keyword. |
---|
2272 | cData[iData].coltype = 0; |
---|
2273 | cData[iData].nelem = 1; |
---|
2274 | cData[iData].tdimcol = -1; |
---|
2275 | } |
---|
2276 | } |
---|
2277 | |
---|
2278 | //------------------------------------------------------ GBTFITSreader::findCol |
---|
2279 | |
---|
2280 | // Locate a parameter in the SDFITS file. |
---|
2281 | |
---|
2282 | void GBTFITSreader::findCol( |
---|
2283 | char *name, |
---|
2284 | int *colnum) |
---|
2285 | { |
---|
2286 | *colnum = 0; |
---|
2287 | int status = 0; |
---|
2288 | fits_get_colnum(cSDptr, CASESEN, name, colnum, &status); |
---|
2289 | |
---|
2290 | if (status) { |
---|
2291 | // Not a real column - maybe it's virtual. |
---|
2292 | char card[81]; |
---|
2293 | |
---|
2294 | status = 0; |
---|
2295 | fits_read_card(cSDptr, name, card, &status); |
---|
2296 | if (status) { |
---|
2297 | // Not virtual either. |
---|
2298 | *colnum = -1; |
---|
2299 | } |
---|
2300 | |
---|
2301 | // Clear error messages. |
---|
2302 | fits_clear_errmsg(); |
---|
2303 | } |
---|
2304 | } |
---|
2305 | |
---|
2306 | //------------------------------------------------------ GBTFITSreader::readDim |
---|
2307 | |
---|
2308 | // Determine the dimensions of an array in the SDFITS file. |
---|
2309 | |
---|
2310 | int GBTFITSreader::readDim( |
---|
2311 | int iData, |
---|
2312 | long iRow, |
---|
2313 | int *naxes, |
---|
2314 | long naxis[]) |
---|
2315 | { |
---|
2316 | int colnum = cData[iData].colnum; |
---|
2317 | if (colnum <= 0) { |
---|
2318 | return 1; |
---|
2319 | } |
---|
2320 | |
---|
2321 | int maxdim = *naxes; |
---|
2322 | if (cData[iData].tdimcol < 0) { |
---|
2323 | // No TDIMnnn column for this array. |
---|
2324 | if (cData[iData].nelem < 0) { |
---|
2325 | // Variable length array; read the array descriptor. |
---|
2326 | *naxes = 1; |
---|
2327 | long dummy; |
---|
2328 | if (fits_read_descript(cSDptr, colnum, iRow, naxis, &dummy, &cStatus)) { |
---|
2329 | return 1; |
---|
2330 | } |
---|
2331 | |
---|
2332 | } else { |
---|
2333 | // Read the repeat count from TFORMnnn. |
---|
2334 | if (fits_read_tdim(cSDptr, colnum, maxdim, naxes, naxis, &cStatus)) { |
---|
2335 | return 1; |
---|
2336 | } |
---|
2337 | } |
---|
2338 | |
---|
2339 | } else { |
---|
2340 | // Read the TDIMnnn value from the header or table. |
---|
2341 | char tdim[8], tdimval[64]; |
---|
2342 | sprintf(tdim, "TDIM%d", colnum); |
---|
2343 | readData(tdim, TSTRING, iRow, tdimval); |
---|
2344 | |
---|
2345 | // fits_decode_tdim() checks that the TDIMnnn value is within the length |
---|
2346 | // of the array in the specified column number but unfortunately doesn't |
---|
2347 | // recognize variable-length arrays. Hence we must decode it here. |
---|
2348 | char *tp = tdimval; |
---|
2349 | if (*tp != '(') return 1; |
---|
2350 | |
---|
2351 | tp++; |
---|
2352 | *naxes = 0; |
---|
2353 | for (size_t j = 1; j < strlen(tdimval); j++) { |
---|
2354 | if (tdimval[j] == ',' || tdimval[j] == ')') { |
---|
2355 | sscanf(tp, "%ld", naxis + (*naxes)++); |
---|
2356 | if (tdimval[j] == ')') break; |
---|
2357 | tp = tdimval + j + 1; |
---|
2358 | } |
---|
2359 | } |
---|
2360 | } |
---|
2361 | |
---|
2362 | return 0; |
---|
2363 | } |
---|
2364 | |
---|
2365 | //----------------------------------------------------- GBTFITSreader::readParm |
---|
2366 | |
---|
2367 | // Read a parameter value from the SDFITS file. |
---|
2368 | |
---|
2369 | int GBTFITSreader::readParm( |
---|
2370 | char *name, |
---|
2371 | int type, |
---|
2372 | void *value) |
---|
2373 | { |
---|
2374 | return readData(name, type, 1, value); |
---|
2375 | } |
---|
2376 | |
---|
2377 | //----------------------------------------------------- GBTFITSreader::readData |
---|
2378 | |
---|
2379 | // Read a data value from the SDFITS file. |
---|
2380 | |
---|
2381 | int GBTFITSreader::readData( |
---|
2382 | char *name, |
---|
2383 | int type, |
---|
2384 | long iRow, |
---|
2385 | void *value) |
---|
2386 | { |
---|
2387 | int colnum; |
---|
2388 | findCol(name, &colnum); |
---|
2389 | |
---|
2390 | if (colnum > 0 && iRow > 0) { |
---|
2391 | // Read the first value from the specified row of the table. |
---|
2392 | int coltype; |
---|
2393 | long nelem, width; |
---|
2394 | fits_get_coltype(cSDptr, colnum, &coltype, &nelem, &width, &cStatus); |
---|
2395 | |
---|
2396 | int anynul; |
---|
2397 | if (type == TSTRING) { |
---|
2398 | if (nelem) { |
---|
2399 | fits_read_col(cSDptr, type, colnum, iRow, 1, 1, 0, &value, &anynul, |
---|
2400 | &cStatus); |
---|
2401 | } else { |
---|
2402 | strcpy((char *)value, ""); |
---|
2403 | } |
---|
2404 | |
---|
2405 | } else { |
---|
2406 | if (nelem) { |
---|
2407 | fits_read_col(cSDptr, type, colnum, iRow, 1, 1, 0, value, &anynul, |
---|
2408 | &cStatus); |
---|
2409 | } else { |
---|
2410 | if (type == TSHORT) { |
---|
2411 | *((short *)value) = 0; |
---|
2412 | } else if (type == TINT) { |
---|
2413 | *((int *)value) = 0; |
---|
2414 | } else if (type == TFLOAT) { |
---|
2415 | *((float *)value) = 0.0f; |
---|
2416 | } else if (type == TDOUBLE) { |
---|
2417 | *((double *)value) = 0.0; |
---|
2418 | } |
---|
2419 | } |
---|
2420 | } |
---|
2421 | |
---|
2422 | } else if (colnum == 0) { |
---|
2423 | // Read keyword value. |
---|
2424 | fits_read_key(cSDptr, type, name, value, 0, &cStatus); |
---|
2425 | |
---|
2426 | } else { |
---|
2427 | // Not present. |
---|
2428 | if (type == TSTRING) { |
---|
2429 | strcpy((char *)value, ""); |
---|
2430 | } else if (type == TSHORT) { |
---|
2431 | *((short *)value) = 0; |
---|
2432 | } else if (type == TINT) { |
---|
2433 | *((int *)value) = 0; |
---|
2434 | } else if (type == TFLOAT) { |
---|
2435 | *((float *)value) = 0.0f; |
---|
2436 | } else if (type == TDOUBLE) { |
---|
2437 | *((double *)value) = 0.0; |
---|
2438 | } |
---|
2439 | } |
---|
2440 | |
---|
2441 | return colnum < 0; |
---|
2442 | } |
---|
2443 | |
---|
2444 | //----------------------------------------------------- GBTFITSreader::readData |
---|
2445 | |
---|
2446 | // Read data from the SDFITS file. |
---|
2447 | |
---|
2448 | int GBTFITSreader::readData( |
---|
2449 | int iData, |
---|
2450 | long iRow, |
---|
2451 | void *value) |
---|
2452 | { |
---|
2453 | int type = cData[iData].type; |
---|
2454 | int colnum = cData[iData].colnum; |
---|
2455 | |
---|
2456 | if (colnum > 0 && iRow > 0) { |
---|
2457 | // Read the required number of values from the specified row of the table. |
---|
2458 | long nelem = cData[iData].nelem; |
---|
2459 | int anynul; |
---|
2460 | if (type == TSTRING) { |
---|
2461 | if (nelem) { |
---|
2462 | fits_read_col(cSDptr, type, colnum, iRow, 1, 1, 0, &value, &anynul, |
---|
2463 | &cStatus); |
---|
2464 | } else { |
---|
2465 | strcpy((char *)value, ""); |
---|
2466 | } |
---|
2467 | |
---|
2468 | } else { |
---|
2469 | if (nelem) { |
---|
2470 | fits_read_col(cSDptr, type, colnum, iRow, 1, abs(nelem), 0, value, |
---|
2471 | &anynul, &cStatus); |
---|
2472 | } else { |
---|
2473 | if (type == TSHORT) { |
---|
2474 | *((short *)value) = 0; |
---|
2475 | } else if (type == TINT) { |
---|
2476 | *((int *)value) = 0; |
---|
2477 | } else if (type == TFLOAT) { |
---|
2478 | *((float *)value) = 0.0f; |
---|
2479 | } else if (type == TDOUBLE) { |
---|
2480 | *((double *)value) = 0.0; |
---|
2481 | } |
---|
2482 | } |
---|
2483 | } |
---|
2484 | |
---|
2485 | } else if (colnum == 0) { |
---|
2486 | // Read keyword value. |
---|
2487 | char *name = cData[iData].name; |
---|
2488 | fits_read_key(cSDptr, type, name, value, 0, &cStatus); |
---|
2489 | |
---|
2490 | } else { |
---|
2491 | // Not present. |
---|
2492 | if (type == TSTRING) { |
---|
2493 | strcpy((char *)value, ""); |
---|
2494 | } else if (type == TSHORT) { |
---|
2495 | *((short *)value) = 0; |
---|
2496 | } else if (type == TINT) { |
---|
2497 | *((int *)value) = 0; |
---|
2498 | } else if (type == TFLOAT) { |
---|
2499 | *((float *)value) = 0.0f; |
---|
2500 | } else if (type == TDOUBLE) { |
---|
2501 | *((double *)value) = 0.0; |
---|
2502 | } |
---|
2503 | } |
---|
2504 | |
---|
2505 | return colnum < 0; |
---|
2506 | } |
---|
2507 | |
---|
2508 | //------------------------------------------------------ GBTFITSreader::readCol |
---|
2509 | |
---|
2510 | // Read a scalar column from the SDFITS file. |
---|
2511 | |
---|
2512 | int GBTFITSreader::readCol( |
---|
2513 | int iData, |
---|
2514 | void *value) |
---|
2515 | { |
---|
2516 | int type = cData[iData].type; |
---|
2517 | |
---|
2518 | if (cData[iData].colnum > 0) { |
---|
2519 | // Table column. |
---|
2520 | int anynul; |
---|
2521 | int offset = 0 ; |
---|
2522 | for ( int ihdu = 0 ; ihdu < numHDU ; ihdu++ ) { |
---|
2523 | fits_movabs_hdu(cSDptr, hduId[ihdu], NULL, &cStatus) ; |
---|
2524 | if ( type == TSHORT ) { |
---|
2525 | fits_read_col(cSDptr, type, cData[iData].colnum, 1, 1, cNRowT[ihdu], 0, |
---|
2526 | &((short *)value)[offset], &anynul, &cStatus); |
---|
2527 | } |
---|
2528 | else if ( type == TINT ) { |
---|
2529 | fits_read_col(cSDptr, type, cData[iData].colnum, 1, 1, cNRowT[ihdu], 0, |
---|
2530 | &((int *)value)[offset], &anynul, &cStatus); |
---|
2531 | } |
---|
2532 | else if ( type == TFLOAT ) { |
---|
2533 | fits_read_col(cSDptr, type, cData[iData].colnum, 1, 1, cNRowT[ihdu], 0, |
---|
2534 | &((float *)value)[offset], &anynul, &cStatus); |
---|
2535 | } |
---|
2536 | else if ( type == TDOUBLE ) { |
---|
2537 | fits_read_col(cSDptr, type, cData[iData].colnum, 1, 1, cNRowT[ihdu], 0, |
---|
2538 | &((double *)value)[offset], &anynul, &cStatus); |
---|
2539 | } |
---|
2540 | offset = cNRowCum[ihdu] ; |
---|
2541 | } |
---|
2542 | } else { |
---|
2543 | // Header keyword. |
---|
2544 | readData(iData, 0, value); |
---|
2545 | for (int irow = 1; irow < cNRow; irow++) { |
---|
2546 | if (type == TSHORT) { |
---|
2547 | ((short *)value)[irow] = *((short *)value); |
---|
2548 | } else if (type == TINT) { |
---|
2549 | ((int *)value)[irow] = *((int *)value); |
---|
2550 | } else if (type == TFLOAT) { |
---|
2551 | ((float *)value)[irow] = *((float *)value); |
---|
2552 | } else if (type == TDOUBLE) { |
---|
2553 | ((double *)value)[irow] = *((double *)value); |
---|
2554 | } |
---|
2555 | } |
---|
2556 | } |
---|
2557 | |
---|
2558 | return cData[iData].colnum < 0; |
---|
2559 | } |
---|
2560 | |
---|
2561 | //----------------------------------------------------- GBTFITSreader::readTime |
---|
2562 | |
---|
2563 | // Read the time from the SDFITS file. |
---|
2564 | |
---|
2565 | int GBTFITSreader::readTime( |
---|
2566 | long iRow, |
---|
2567 | int iPix, |
---|
2568 | char *datobs, |
---|
2569 | double &utc) |
---|
2570 | { |
---|
2571 | readData(DATE_OBS, iRow, datobs); |
---|
2572 | if (cData[TIME].colnum >= 0) { |
---|
2573 | readData(TIME, iRow, &utc); |
---|
2574 | } else if (cGBT) { |
---|
2575 | Int yy, mm ; |
---|
2576 | Double dd, hour, min, sec ; |
---|
2577 | sscanf( datobs, "%d-%d-%lfT%lf:%lf:%lf", &yy, &mm, &dd, &hour, &min, &sec ) ; |
---|
2578 | dd = dd + ( hour * 3600.0 + min * 60.0 + sec ) / 86400.0 ; |
---|
2579 | MVTime mvt( yy, mm, dd ) ; |
---|
2580 | dd = mvt.day() ; |
---|
2581 | utc = fmod( dd, 1.0 ) * 86400.0 ; |
---|
2582 | } else if (cNAxisTime > 1) { |
---|
2583 | double timeDelt, timeRefPix, timeRefVal; |
---|
2584 | readData(TimeRefVal, iRow, &timeRefVal); |
---|
2585 | readData(TimeDelt, iRow, &timeDelt); |
---|
2586 | readData(TimeRefPix, iRow, &timeRefPix); |
---|
2587 | utc = timeRefVal + (iPix - timeRefPix) * timeDelt; |
---|
2588 | } |
---|
2589 | |
---|
2590 | if (cALFA_BD) utc *= 3600.0; |
---|
2591 | |
---|
2592 | // Check DATE-OBS format. |
---|
2593 | if (datobs[2] == '/') { |
---|
2594 | // Translate an old-format DATE-OBS. |
---|
2595 | datobs[9] = datobs[1]; |
---|
2596 | datobs[8] = datobs[0]; |
---|
2597 | datobs[2] = datobs[6]; |
---|
2598 | datobs[5] = datobs[3]; |
---|
2599 | datobs[3] = datobs[7]; |
---|
2600 | datobs[6] = datobs[4]; |
---|
2601 | datobs[7] = '-'; |
---|
2602 | datobs[4] = '-'; |
---|
2603 | datobs[1] = '9'; |
---|
2604 | datobs[0] = '1'; |
---|
2605 | |
---|
2606 | } else if (datobs[10] == 'T' && cData[TIME].colnum < 0) { |
---|
2607 | // Dig UTC out of a new-format DATE-OBS. |
---|
2608 | int hh, mm; |
---|
2609 | float ss; |
---|
2610 | sscanf(datobs+11, "%d:%d:%f", &hh, &mm, &ss); |
---|
2611 | utc = (hh*60 + mm)*60 + ss; |
---|
2612 | } |
---|
2613 | |
---|
2614 | datobs[10] = '\0'; |
---|
2615 | |
---|
2616 | return 0; |
---|
2617 | } |
---|
2618 | |
---|
2619 | //------------------------------------------------------ GBTFITSreader::alfaCal |
---|
2620 | |
---|
2621 | // Process ALFA calibration data. |
---|
2622 | |
---|
2623 | int GBTFITSreader::alfaCal( |
---|
2624 | short iBeam, |
---|
2625 | short iIF, |
---|
2626 | short iPol) |
---|
2627 | { |
---|
2628 | const string methodName = "alfaCal()" ; |
---|
2629 | |
---|
2630 | int calOn; |
---|
2631 | char chars[32]; |
---|
2632 | if (cALFA_BD) { |
---|
2633 | readData((char *)"OBS_NAME", TSTRING, cRow, chars); |
---|
2634 | } else { |
---|
2635 | readData((char *)"SCANTYPE", TSTRING, cRow, chars); |
---|
2636 | } |
---|
2637 | |
---|
2638 | if (strcmp(chars, "ON") == 0) { |
---|
2639 | calOn = 1; |
---|
2640 | } else if (strcmp(chars, "OFF") == 0) { |
---|
2641 | calOn = 0; |
---|
2642 | } else { |
---|
2643 | return 1; |
---|
2644 | } |
---|
2645 | |
---|
2646 | // Read cal data. |
---|
2647 | long *blc = new long[cNAxes+1]; |
---|
2648 | long *trc = new long[cNAxes+1]; |
---|
2649 | long *inc = new long[cNAxes+1]; |
---|
2650 | for (int iaxis = 0; iaxis <= cNAxes; iaxis++) { |
---|
2651 | blc[iaxis] = 1; |
---|
2652 | trc[iaxis] = 1; |
---|
2653 | inc[iaxis] = 1; |
---|
2654 | } |
---|
2655 | |
---|
2656 | // User channel selection. |
---|
2657 | int startChan = cStartChan[iIF]; |
---|
2658 | int endChan = cEndChan[iIF]; |
---|
2659 | |
---|
2660 | blc[cFreqAxis] = std::min(startChan, endChan); |
---|
2661 | trc[cFreqAxis] = std::max(startChan, endChan); |
---|
2662 | if (cALFA_CIMA > 1) { |
---|
2663 | // CIMAFITS 2.x has a legitimate STOKES axis... |
---|
2664 | blc[cStokesAxis] = iPol+1; |
---|
2665 | trc[cStokesAxis] = iPol+1; |
---|
2666 | } else { |
---|
2667 | // ...older ALFA data does not. |
---|
2668 | blc[cStokesAxis] = 1; |
---|
2669 | trc[cStokesAxis] = 1; |
---|
2670 | } |
---|
2671 | if (cTimeAxis >= 0) { |
---|
2672 | blc[cTimeAxis] = cTimeIdx; |
---|
2673 | trc[cTimeAxis] = cTimeIdx; |
---|
2674 | } |
---|
2675 | blc[cNAxes] = cRow; |
---|
2676 | trc[cNAxes] = cRow; |
---|
2677 | |
---|
2678 | float spectrum[endChan]; |
---|
2679 | int anynul; |
---|
2680 | if (fits_read_subset_flt(cSDptr, cData[DATA].colnum, cNAxes, cNAxis, |
---|
2681 | blc, trc, inc, 0, spectrum, &anynul, &cStatus)) { |
---|
2682 | log(LogOrigin( className, methodName, WHERE ), LogIO::SEVERE); |
---|
2683 | delete [] blc; |
---|
2684 | delete [] trc; |
---|
2685 | delete [] inc; |
---|
2686 | return 1; |
---|
2687 | } |
---|
2688 | |
---|
2689 | // Factor to rescale according to the number of unblanked accumulations. |
---|
2690 | float factor = 1.0f; |
---|
2691 | if (cALFA_CIMA > 1) { |
---|
2692 | int colnum, naccum; |
---|
2693 | findCol((char *)"STAT", &colnum); |
---|
2694 | fits_read_col(cSDptr, TINT, colnum, cRow, 2, 1, 0, &naccum, &anynul, |
---|
2695 | &cStatus); |
---|
2696 | factor = cALFAacc / naccum; |
---|
2697 | } |
---|
2698 | |
---|
2699 | // Average the spectrum. |
---|
2700 | float mean = 1e9f; |
---|
2701 | for (int k = 0; k < 2; k++) { |
---|
2702 | float discrim = 2.0f * mean; |
---|
2703 | |
---|
2704 | int nChan = 0; |
---|
2705 | float sum = 0.0f; |
---|
2706 | |
---|
2707 | float *chanN = spectrum + abs(endChan - startChan) + 1; |
---|
2708 | for (float *chan = spectrum; chan < chanN; chan++) { |
---|
2709 | // Simple discriminant that eliminates strong radar interference. |
---|
2710 | if (*chan < discrim) { |
---|
2711 | nChan++; |
---|
2712 | sum += *chan * factor; |
---|
2713 | } |
---|
2714 | } |
---|
2715 | |
---|
2716 | mean = sum / nChan; |
---|
2717 | } |
---|
2718 | |
---|
2719 | if (calOn) { |
---|
2720 | sALFAcalOn[iBeam][iPol] *= sALFAcalNon[iBeam][iPol]; |
---|
2721 | sALFAcalOn[iBeam][iPol] += mean; |
---|
2722 | sALFAcalOn[iBeam][iPol] /= ++sALFAcalNon[iBeam][iPol]; |
---|
2723 | } else { |
---|
2724 | sALFAcalOff[iBeam][iPol] *= sALFAcalNoff[iBeam][iPol]; |
---|
2725 | sALFAcalOff[iBeam][iPol] += mean; |
---|
2726 | sALFAcalOff[iBeam][iPol] /= ++sALFAcalNoff[iBeam][iPol]; |
---|
2727 | } |
---|
2728 | |
---|
2729 | if (sALFAcalNon[iBeam][iPol] && sALFAcalNoff[iBeam][iPol]) { |
---|
2730 | // Tcal should come from the TCAL table, it varies weakly with beam, |
---|
2731 | // polarization, and frequency. However, TCAL is not written properly. |
---|
2732 | float Tcal = 12.0f; |
---|
2733 | sALFAcal[iBeam][iPol] = Tcal / (sALFAcalOn[iBeam][iPol] - |
---|
2734 | sALFAcalOff[iBeam][iPol]); |
---|
2735 | |
---|
2736 | // Scale from K to Jy; the gain also varies weakly with beam, |
---|
2737 | // polarization, frequency, and zenith angle. |
---|
2738 | float fluxCal = 10.0f; |
---|
2739 | sALFAcal[iBeam][iPol] /= fluxCal; |
---|
2740 | } |
---|
2741 | |
---|
2742 | return 0; |
---|
2743 | } |
---|
2744 | |
---|
2745 | //----------------------------------------------------- GBTFITSreader::alfaGain |
---|
2746 | |
---|
2747 | // ALFA gain factor. |
---|
2748 | |
---|
2749 | float GBTFITSreader::alfaGain( |
---|
2750 | float zd) |
---|
2751 | { |
---|
2752 | // Gain vs zenith distance table from Robert Minchin, 2008/12/08. |
---|
2753 | const int nZD = 37; |
---|
2754 | const float zdLim[] = {1.5f, 19.5f}; |
---|
2755 | const float zdInc = (nZD - 1) / (zdLim[1] - zdLim[0]); |
---|
2756 | float zdGain[] = { 1.00723708, |
---|
2757 | 1.16644573, 1.15003645, 1.07117307, 1.02532673, |
---|
2758 | 1.01788402, 1.01369524, 1.00000000, 0.989855111, |
---|
2759 | 0.990888834, 0.993996620, 0.989964068, 0.982213855, |
---|
2760 | 0.978662670, 0.979349494, 0.978478372, 0.974631131, |
---|
2761 | 0.972126007, 0.972835243, 0.972742677, 0.968671739, |
---|
2762 | 0.963891327, 0.963452935, 0.966831207, 0.969585896, |
---|
2763 | 0.970700860, 0.972644389, 0.973754644, 0.967344403, |
---|
2764 | 0.952168941, 0.937160134, 0.927843094, 0.914048433, |
---|
2765 | 0.886700928, 0.864701211, 0.869126320, 0.854309499}; |
---|
2766 | |
---|
2767 | float gain; |
---|
2768 | // Do table lookup by linear interpolation. |
---|
2769 | float lambda = zdInc * (zd - zdLim[0]); |
---|
2770 | int j = int(lambda); |
---|
2771 | if (j < 0) { |
---|
2772 | gain = zdGain[0]; |
---|
2773 | } else if (j >= nZD-1) { |
---|
2774 | gain = zdGain[nZD-1]; |
---|
2775 | } else { |
---|
2776 | gain = zdGain[j] + (lambda - j) * (zdGain[j+1] - zdGain[j]); |
---|
2777 | } |
---|
2778 | |
---|
2779 | return gain; |
---|
2780 | } |
---|
2781 | |
---|
2782 | //----------------------------------------------------- GBTFITSreader::cRowRelative |
---|
2783 | |
---|
2784 | // get relative row index in appropriate binary table |
---|
2785 | |
---|
2786 | long GBTFITSreader::cRowRelative( long iRow ) |
---|
2787 | { |
---|
2788 | // iRow is 1-relative |
---|
2789 | const string methodName = "cRowRelative" ; |
---|
2790 | if ( numHDU == 0 ) { |
---|
2791 | log( LogOrigin( className, methodName, WHERE ), LogIO::SEVERE, |
---|
2792 | "You should call open() first" ) ; |
---|
2793 | return 0L ; |
---|
2794 | } |
---|
2795 | else if ( numHDU == 1 ) { |
---|
2796 | if ( iRow > cNRow ) |
---|
2797 | return 0L ; |
---|
2798 | else |
---|
2799 | return iRow ; |
---|
2800 | } |
---|
2801 | |
---|
2802 | long jRow = 0L ; |
---|
2803 | sprintf( cMsg, "iRow = %ld", iRow ); |
---|
2804 | log(LogOrigin( className, methodName, WHERE ), LogIO::DEBUGGING, cMsg) ; |
---|
2805 | if ( iRow <= cNRowCum[0] ) { |
---|
2806 | jRow = iRow ; |
---|
2807 | sprintf( cMsg, "Moving %d(%d)", 0, hduId[0] ) ; |
---|
2808 | log(LogOrigin( className, methodName, WHERE ), LogIO::DEBUGGING, cMsg) ; |
---|
2809 | if ( fits_movabs_hdu( cSDptr, hduId[0], NULL, &cStatus ) ) { |
---|
2810 | log( LogOrigin( className, methodName, WHERE ), LogIO::SEVERE, |
---|
2811 | "Failed to move HDU" ) ; |
---|
2812 | return 0L ; |
---|
2813 | } |
---|
2814 | } |
---|
2815 | else { |
---|
2816 | for ( int ihdu = 1 ; ihdu < numHDU ; ihdu++ ) { |
---|
2817 | if ( iRow <= cNRowCum[ihdu] ) { |
---|
2818 | jRow = iRow - cNRowCum[ihdu-1] ; |
---|
2819 | sprintf( cMsg, "Moving %d(%d)", ihdu, hduId[ihdu] ) ; |
---|
2820 | log(LogOrigin( className, methodName, WHERE ), LogIO::DEBUGGING, cMsg) ; |
---|
2821 | if ( fits_movabs_hdu( cSDptr, hduId[ihdu], NULL, &cStatus ) ) { |
---|
2822 | log( LogOrigin( className, methodName, WHERE ), LogIO::SEVERE, |
---|
2823 | "Failed to move HDU" ) ; |
---|
2824 | return 0L ; |
---|
2825 | } |
---|
2826 | break ; |
---|
2827 | } |
---|
2828 | } |
---|
2829 | } |
---|
2830 | sprintf( cMsg, "jRow = %ld", jRow ); |
---|
2831 | log(LogOrigin( className, methodName, WHERE ), LogIO::DEBUGGING, cMsg) ; |
---|
2832 | |
---|
2833 | return jRow ; |
---|
2834 | } |
---|
2835 | |
---|
2836 | //----------------------------------------------------- GBTFITSreader::nIFPerHDU |
---|
2837 | |
---|
2838 | // get number of IFs per HDU |
---|
2839 | |
---|
2840 | Vector<Int> GBTFITSreader::nIFPerHDU() |
---|
2841 | { |
---|
2842 | const string methodName = "nIFPerHDU()" ; |
---|
2843 | //cNumKeys.resize( numHDU ) ; |
---|
2844 | cNumKeys.resize( 0 ) ; |
---|
2845 | cRefValKey.resize( 0 ) ; |
---|
2846 | cRefVal.resize( 0 ) ; |
---|
2847 | cIncVal.resize( 0 ) ; |
---|
2848 | cIFNO.resize( 0 ) ; |
---|
2849 | Vector<Int> nIF_per_HDU( numHDU, 0 ) ; |
---|
2850 | for ( int ihdu = 0 ; ihdu < numHDU ; ihdu++ ) { |
---|
2851 | Vector<String> sampler( 0 ) ; |
---|
2852 | Vector<Double> rfreq( 0 ) ; |
---|
2853 | Vector<String> samprf( 0 ) ; |
---|
2854 | if ( fits_movabs_hdu( cSDptr, hduId[ihdu], NULL, &cStatus ) ) { |
---|
2855 | log( LogOrigin( className, methodName, WHERE ), LogIO::SEVERE, |
---|
2856 | "Failed to move HDU" ) ; |
---|
2857 | nIF_per_HDU = -1 ; |
---|
2858 | return nIF_per_HDU ; |
---|
2859 | } |
---|
2860 | int startpos = (int) cRefValKey.size() ; |
---|
2861 | int numkeys = 0 ; |
---|
2862 | for ( int irow = 0 ; irow < cNRowT[ihdu] ; irow++ ) { |
---|
2863 | char samp[24] ; |
---|
2864 | double rf ; |
---|
2865 | readData( SAMPLER, irow+1, samp ) ; |
---|
2866 | readData( RESTFRQ, irow+1, &rf ) ; |
---|
2867 | char sarf[48] ; |
---|
2868 | sprintf( sarf, "%d/%s/%lf", ihdu, samp, rf ) ; |
---|
2869 | String sr = String( sarf ) ; |
---|
2870 | if ( allNE( sr, samprf ) ) { |
---|
2871 | int oldsize = samprf.size() ; |
---|
2872 | samprf.resize( oldsize+1, True ) ; |
---|
2873 | samprf[oldsize] = sr ; |
---|
2874 | sprintf( cMsg, "added samprf = %s", sarf ) ; |
---|
2875 | log( LogOrigin( className, methodName, WHERE ), LogIO::DEBUGGING, cMsg ) ; |
---|
2876 | Double refval = getRefValLSR( irow+1 ) ; |
---|
2877 | double increm ; |
---|
2878 | readData(FqDelt, irow+1, &increm); |
---|
2879 | cRefValKey.push_back( sr ) ; |
---|
2880 | cRefVal.push_back( (double)refval ) ; |
---|
2881 | cIncVal.push_back( increm ) ; |
---|
2882 | numkeys++ ; |
---|
2883 | } |
---|
2884 | } |
---|
2885 | cNumKeys.push_back( numkeys ) ; |
---|
2886 | nIF_per_HDU[ihdu] = mergeIFPerHDU( startpos, numkeys ) ; |
---|
2887 | sprintf( cMsg, "number of IF for HDU %d = %d", |
---|
2888 | hduId[ihdu], nIF_per_HDU[ihdu] ) ; |
---|
2889 | log( LogOrigin( className, methodName, WHERE ), LogIO::NORMAL, cMsg ) ; |
---|
2890 | } |
---|
2891 | |
---|
2892 | return nIF_per_HDU ; |
---|
2893 | } |
---|
2894 | |
---|
2895 | Double GBTFITSreader::getRefValLSR( int irow ) |
---|
2896 | { |
---|
2897 | const string methodName = "getRefValLSR()" ; |
---|
2898 | |
---|
2899 | char keyw[9], ctype[9]; |
---|
2900 | sprintf(keyw, "CTYPE%ld", cFreqAxis+1); |
---|
2901 | readParm(keyw, TSTRING, ctype); |
---|
2902 | double fqRefVal ; |
---|
2903 | readData(FqRefVal, irow, &fqRefVal); |
---|
2904 | if ( strstr( ctype, "-LSR" ) == NULL && strstr( ctype, "LSRK" ) == NULL ) { |
---|
2905 | // need conversion |
---|
2906 | Int year, month ; |
---|
2907 | Double dd, hour, min, sec ; |
---|
2908 | char dateObs[32] ; |
---|
2909 | readData(DATE_OBS, irow, dateObs); |
---|
2910 | sscanf( dateObs, "%4d-%2d-%2lfT%lf:%lf:%lf", &year, &month, &dd, &hour, &min, &sec ) ; |
---|
2911 | dd = dd + ( hour * 3600.0 + min * 60.0 + sec ) / 86400.0 ; |
---|
2912 | dd = MVTime(year, month, dd).day() ; |
---|
2913 | double duration ; |
---|
2914 | readData(DURATION, irow, &duration) ; |
---|
2915 | dd += 0.5 * duration / 86400.0 ; |
---|
2916 | MEpoch me( Quantity( dd, "d" ), MEpoch::UTC ) ; |
---|
2917 | double antPos[3] ; |
---|
2918 | readParm( (char *)(char *)"SITELONG", TDOUBLE, antPos ) ; |
---|
2919 | readParm( (char *)(char *)"SITELAT", TDOUBLE, antPos+1 ) ; |
---|
2920 | readParm( (char *)(char *)"SITEELEV", TDOUBLE, antPos+2 ) ; |
---|
2921 | Vector<Double> pos( 2 ) ; |
---|
2922 | pos[0] = Double( antPos[0] ) ; |
---|
2923 | pos[1] = Double( antPos[1] ) ; |
---|
2924 | MPosition mp( MVPosition( Quantity( Double(antPos[2]), "m" ), |
---|
2925 | Quantum< Vector<Double> >( pos, "deg" ) ), |
---|
2926 | MPosition::WGS84 ) ; |
---|
2927 | double ra, dec ; |
---|
2928 | readData(RA, irow, &ra); |
---|
2929 | readData(DEC, irow, &dec); |
---|
2930 | MDirection md( Quantity( Double(ra), "deg" ), Quantity( Double(dec), "deg" ), MDirection::J2000 ) ; |
---|
2931 | MeasFrame mf( me, mp, md ) ; |
---|
2932 | MFrequency::Types fromType = MFrequency::DEFAULT ; |
---|
2933 | if ( strstr( ctype, "-OBS" ) != NULL ) { |
---|
2934 | fromType = MFrequency::TOPO ; |
---|
2935 | } |
---|
2936 | else if ( strstr( ctype, "-HEL" ) != NULL ) { |
---|
2937 | fromType = MFrequency::BARY ; |
---|
2938 | } |
---|
2939 | else if ( strstr( ctype, "-GEO" ) != NULL ) { |
---|
2940 | fromType = MFrequency::GEO ; |
---|
2941 | } |
---|
2942 | else if ( strstr( ctype, "-GAL" ) != NULL ) { |
---|
2943 | fromType = MFrequency::GALACTO ; |
---|
2944 | } |
---|
2945 | else if ( strstr( ctype, "REST" ) != NULL ) { |
---|
2946 | fromType = MFrequency::REST ; |
---|
2947 | } |
---|
2948 | MFrequency::Convert tolsr( fromType, MFrequency::Ref( MFrequency::LSRK, mf ) ) ; |
---|
2949 | Double world = tolsr( Double( fqRefVal ) ).get( "Hz" ).getValue() ; |
---|
2950 | char sampler[10]; |
---|
2951 | readData(SAMPLER,irow,sampler); |
---|
2952 | int hduId = 0 ; |
---|
2953 | fits_get_hdu_num( cSDptr, &hduId ) ; |
---|
2954 | sprintf( cMsg, "HDU %d Row %d (%s): before conversion %.7f, after conversion %.7f", hduId, irow, sampler, fqRefVal, world ) ; |
---|
2955 | log( LogOrigin( className, methodName, WHERE ), LogIO::DEBUGGING, cMsg ) ; |
---|
2956 | fqRefVal = (double)world ; |
---|
2957 | } |
---|
2958 | |
---|
2959 | return Double(fqRefVal) ; |
---|
2960 | } |
---|
2961 | |
---|
2962 | Double GBTFITSreader::getRefValLSR( long iRow, int idx, char *sampler, double /*restfreq*/ ) |
---|
2963 | { |
---|
2964 | const string methodName = "getRefValLSR()" ; |
---|
2965 | |
---|
2966 | // get ihdu |
---|
2967 | // int hduid = 0 ; |
---|
2968 | // while ( iRow > cNRowCum[hduid] && hduid < numHDU) { |
---|
2969 | // hduid++ ; |
---|
2970 | // } |
---|
2971 | |
---|
2972 | // create key |
---|
2973 | // char sarf[48] ; |
---|
2974 | // sprintf( sarf, "%d/%s/%lf", hduid, sampler, restfreq ) ; |
---|
2975 | // String sr = String( sarf ) ; |
---|
2976 | |
---|
2977 | sprintf( cMsg, "Row %ld (%s): reference frequency %lf", iRow, sampler, cRefVal[idx] ) ; |
---|
2978 | log( LogOrigin( className, methodName, WHERE ), LogIO::DEBUGGING, cMsg ) ; |
---|
2979 | |
---|
2980 | if ( idx == (int)cRefValKey.size() ) { |
---|
2981 | log( LogOrigin( className, methodName, WHERE ), LogIO::SEVERE, "Failed to get reference frequency value" ) ; |
---|
2982 | return 0.0 ; |
---|
2983 | } |
---|
2984 | |
---|
2985 | return cRefVal[idx] ; |
---|
2986 | } |
---|
2987 | |
---|
2988 | Int GBTFITSreader::mergeIFPerHDU( int start, int n ) |
---|
2989 | { |
---|
2990 | Int if0 = 0 ; |
---|
2991 | if ( cIFNO.size() > 0 ) { |
---|
2992 | if0 = max( cIFNO ) + 1 ; |
---|
2993 | } |
---|
2994 | cIFNO.resize( start+n, True ) ; |
---|
2995 | Vector< Vector<Double> > lIncVal( 0 ) ; |
---|
2996 | for ( int i = start ; i < start+n ; i++ ) { |
---|
2997 | Vector<Double> v( 2 ) ; |
---|
2998 | v[0] = cRefVal[i] ; |
---|
2999 | v[1] = cIncVal[i] ; |
---|
3000 | int idx = -1 ; |
---|
3001 | for ( int j = 0 ; j < (int)lIncVal.size() ; j++ ) { |
---|
3002 | if ( allEQ( v, lIncVal[j] ) ) { |
---|
3003 | idx = j ; |
---|
3004 | break ; |
---|
3005 | } |
---|
3006 | } |
---|
3007 | if ( idx == -1 ) { |
---|
3008 | int oldsize = lIncVal.size() ; |
---|
3009 | lIncVal.resize( oldsize+1, True ) ; |
---|
3010 | lIncVal[oldsize] = v ; |
---|
3011 | cIFNO[i] = if0 + oldsize ; |
---|
3012 | } |
---|
3013 | else { |
---|
3014 | cIFNO[i] = if0 + idx ; |
---|
3015 | } |
---|
3016 | } |
---|
3017 | return max(cIFNO) - if0 + 1 ; |
---|
3018 | } |
---|