[1325] | 1 | //#--------------------------------------------------------------------------- |
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| 2 | //# PKSreader.cc: Class to read Parkes multibeam data. |
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| 3 | //#--------------------------------------------------------------------------- |
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[1757] | 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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[1325] | 6 | //# |
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[1757] | 7 | //# This file is part of livedata. |
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[1325] | 8 | //# |
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[1757] | 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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[1325] | 15 | //# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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[1757] | 16 | //# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
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| 17 | //# more details. |
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[1325] | 18 | //# |
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[1757] | 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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[1325] | 21 | //# |
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[1757] | 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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[1325] | 29 | //# |
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[1757] | 30 | //# http://www.atnf.csiro.au/computing/software/livedata.html |
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| 31 | //# $Id: PKSreader.cc,v 19.13 2009-09-29 07:33:39 cal103 Exp $ |
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[1325] | 32 | //#--------------------------------------------------------------------------- |
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| 33 | //# Original: 2000/08/23, Mark Calabretta, ATNF |
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| 34 | //#--------------------------------------------------------------------------- |
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| 35 | |
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| 36 | #include <atnf/PKSIO/PKSreader.h> |
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| 37 | #include <atnf/PKSIO/PKSFITSreader.h> |
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| 38 | |
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| 39 | #ifndef NOPKSMS |
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| 40 | #include <atnf/PKSIO/PKSMS2reader.h> |
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| 41 | #endif |
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| 42 | |
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| 43 | #include <casa/IO/RegularFileIO.h> |
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| 44 | #include <casa/OS/File.h> |
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| 45 | |
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| 46 | //--------------------------------------------------------------- getPKSreader |
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| 47 | |
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| 48 | // Return an appropriate PKSreader for a Parkes Multibeam dataset. |
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| 49 | |
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| 50 | PKSreader* getPKSreader( |
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| 51 | const String name, |
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| 52 | const Int retry, |
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| 53 | const Int interpolate, |
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[1757] | 54 | String &format) |
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[1325] | 55 | { |
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| 56 | // Check accessibility of the input. |
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| 57 | File inFile(name); |
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| 58 | if (!inFile.exists()) { |
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| 59 | format = "DATASET NOT FOUND"; |
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[1757] | 60 | return 0x0; |
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[1325] | 61 | } |
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| 62 | |
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| 63 | if (!inFile.isReadable()) { |
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| 64 | format = "DATASET UNREADABLE"; |
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[1757] | 65 | return 0x0; |
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[1325] | 66 | } |
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| 67 | |
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| 68 | // Determine the type of input. |
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[1757] | 69 | PKSreader *reader = 0x0; |
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[1325] | 70 | if (inFile.isRegular()) { |
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| 71 | // Is it MBFITS or SDFITS? |
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[1757] | 72 | if (strstr(name.chars(), ".sdfits")) { |
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| 73 | // Looks like SDFITS, possibly gzip'd. |
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[1325] | 74 | format = "SDFITS"; |
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| 75 | reader = new PKSFITSreader("SDFITS"); |
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| 76 | |
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| 77 | } else { |
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[1757] | 78 | RegularFileIO file(name); |
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| 79 | char buf[32]; |
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| 80 | file.read(30, buf, False); |
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| 81 | buf[30] = '\0'; |
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| 82 | if (String(buf) == "SIMPLE = T") { |
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[1868] | 83 | file.seek(560); |
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| 84 | file.read(26, buf, False); |
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| 85 | buf[26] = '\0' ; |
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| 86 | if ( String(buf) == "ORIGIN = 'NRAO Green Bank" ) { |
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| 87 | // Looks like GBT SDFITS |
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| 88 | format = "GBTFITS" ; |
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| 89 | reader = new PKSFITSreader("GBTFITS") ; |
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| 90 | } |
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| 91 | else { |
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| 92 | // Looks like SDFITS. |
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| 93 | format = "SDFITS"; |
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| 94 | reader = new PKSFITSreader("SDFITS"); |
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| 95 | } |
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[1757] | 96 | } else { |
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| 97 | // Assume it's MBFITS. |
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| 98 | format = "MBFITS"; |
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| 99 | reader = new PKSFITSreader("MBFITS", retry, interpolate); |
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| 100 | } |
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[1325] | 101 | } |
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| 102 | |
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| 103 | } else if (inFile.isDirectory()) { |
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[1883] | 104 | Bool isMS = ( (File(name+"/table.info").exists()) |
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| 105 | && File(name+"/table.dat").exists() ); |
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| 106 | if (isMS) { |
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| 107 | RegularFileIO ifs(name+"/table.info") ; |
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| 108 | char buf[128] ; |
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| 109 | ifs.read(sizeof(buf),buf,False) ; |
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| 110 | if ( strstr( buf, "Measurement Set" ) == NULL ) |
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| 111 | isMS = False ; |
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| 112 | } |
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| 113 | //if (File(name + "/DATA_DESCRIPTION").exists()) { |
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| 114 | if (isMS) { |
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[1325] | 115 | // MS version 2. |
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| 116 | #ifdef NOPKSMS |
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| 117 | format = "MS2 INPUT FORMAT IS NO LONGER SUPPORTED"; |
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| 118 | #else |
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| 119 | format = "MS2"; |
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| 120 | reader = new PKSMS2reader(); |
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| 121 | #endif |
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| 122 | } |
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| 123 | |
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| 124 | } else { |
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| 125 | format = "UNRECOGNIZED INPUT FORMAT"; |
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| 126 | } |
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[1757] | 127 | return reader; |
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| 128 | } |
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[1325] | 129 | |
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[1757] | 130 | //--------------------------------------------------------------- getPKSreader |
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[1325] | 131 | |
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[1757] | 132 | // Search a list of directories for a Parkes Multibeam dataset and return an |
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| 133 | |
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| 134 | PKSreader* getPKSreader( |
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| 135 | const String name, |
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| 136 | const Vector<String> directories, |
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| 137 | const Int retry, |
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| 138 | const Int interpolate, |
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| 139 | Int &iDir, |
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| 140 | String &format) |
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| 141 | { |
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| 142 | PKSreader *reader = 0x0; |
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| 143 | |
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| 144 | iDir = -1; |
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| 145 | Int nDir = directories.nelements(); |
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| 146 | for (Int i = 0; i < nDir; i++) { |
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| 147 | String inName = directories(i) + "/" + name; |
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| 148 | reader = getPKSreader(inName, retry, interpolate, format); |
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| 149 | if (reader) { |
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| 150 | iDir = i; |
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| 151 | break; |
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| 152 | } |
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| 153 | } |
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| 154 | |
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| 155 | return reader; |
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| 156 | } |
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| 157 | |
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| 158 | //--------------------------------------------------------------- getPKSreader |
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| 159 | |
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| 160 | // Open an appropriate PKSreader for a Parkes Multibeam dataset. |
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| 161 | |
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| 162 | PKSreader* getPKSreader( |
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| 163 | const String name, |
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| 164 | const String antenna, |
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| 165 | const Int retry, |
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| 166 | const Int interpolate, |
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| 167 | String &format, |
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| 168 | Vector<Bool> &beams, |
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| 169 | Vector<Bool> &IFs, |
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| 170 | Vector<uInt> &nChan, |
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| 171 | Vector<uInt> &nPol, |
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| 172 | Vector<Bool> &haveXPol, |
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| 173 | Bool &haveBase, |
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| 174 | Bool &haveSpectra) |
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| 175 | { |
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| 176 | PKSreader *reader = getPKSreader(name, retry, interpolate, format); |
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| 177 | |
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[1325] | 178 | // Try to open it. |
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| 179 | if (reader) { |
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[1757] | 180 | if (reader->open(name, antenna, beams, IFs, nChan, nPol, haveXPol, |
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| 181 | haveBase, haveSpectra)) { |
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[1325] | 182 | format += " OPEN ERROR"; |
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| 183 | delete reader; |
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[1757] | 184 | reader = 0x0; |
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[1325] | 185 | } |
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| 186 | } |
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| 187 | |
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[1757] | 188 | return reader; |
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[1325] | 189 | } |
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| 190 | |
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| 191 | //--------------------------------------------------------------- getPKSreader |
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| 192 | |
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| 193 | // Search a list of directories for a Parkes Multibeam dataset and return an |
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| 194 | // appropriate PKSreader for it. |
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| 195 | PKSreader* getPKSreader( |
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| 196 | const String name, |
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[1757] | 197 | const String antenna, |
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[1325] | 198 | const Vector<String> directories, |
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| 199 | const Int retry, |
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| 200 | const Int interpolate, |
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| 201 | Int &iDir, |
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| 202 | String &format, |
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| 203 | Vector<Bool> &beams, |
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| 204 | Vector<Bool> &IFs, |
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| 205 | Vector<uInt> &nChan, |
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| 206 | Vector<uInt> &nPol, |
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| 207 | Vector<Bool> &haveXPol, |
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| 208 | Bool &haveBase, |
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| 209 | Bool &haveSpectra) |
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| 210 | { |
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[1757] | 211 | PKSreader *reader = getPKSreader(name, directories, retry, interpolate, |
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| 212 | iDir, format); |
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| 213 | |
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| 214 | // Try to open it. |
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| 215 | if (reader) { |
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| 216 | if (reader->open(name, antenna, beams, IFs, nChan, nPol, haveXPol, |
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| 217 | haveBase, haveSpectra)) { |
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| 218 | format += " OPEN ERROR"; |
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| 219 | delete reader; |
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| 220 | reader = 0x0; |
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[1325] | 221 | } |
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| 222 | } |
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| 223 | |
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[1757] | 224 | return reader; |
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[1325] | 225 | } |
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