1 | //#--------------------------------------------------------------------------- |
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2 | //# FITSreader.cc: ATNF single-dish FITS reader. |
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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: FITSreader.cc,v 19.4 2009-09-29 07:33:38 cal103 Exp $ |
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32 | //#--------------------------------------------------------------------------- |
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33 | //# The FITSreader class is an abstract base class for the Parkes Multibeam |
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34 | //# RPFITS and SDFITS readers. |
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35 | //# |
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36 | //# Original: 2000/07/28 Mark Calabretta |
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37 | //#--------------------------------------------------------------------------- |
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38 | |
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39 | #include <atnf/PKSIO/FITSreader.h> |
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40 | |
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41 | #include <algorithm> |
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42 | |
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43 | using namespace std; |
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44 | |
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45 | //--------------------------------------------------------- FITSreader::select |
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46 | |
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47 | // Set data selection criteria. Note that cBeams and cIFs, the addresses of |
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48 | // int arrays, are returned by open() thereby allowing their elements to be |
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49 | // modified directly elsewhere (specifically by PKSFITSreader::select()). |
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50 | |
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51 | int FITSreader::select( |
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52 | const int startChan[], |
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53 | const int endChan[], |
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54 | const int refChan[], |
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55 | const int getSpectra, |
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56 | const int getXPol, |
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57 | const int getFeedPos, |
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58 | const int getPointing, |
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59 | const int coordSys) |
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60 | { |
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61 | int maxNChan = 0; |
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62 | |
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63 | for (int iIF = 0; iIF < cNIF; iIF++) { |
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64 | if (!cIFs[iIF]) { |
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65 | continue; |
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66 | } |
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67 | |
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68 | cStartChan[iIF] = startChan[iIF]; |
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69 | cEndChan[iIF] = endChan[iIF]; |
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70 | cRefChan[iIF] = refChan[iIF]; |
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71 | |
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72 | if (cStartChan[iIF] <= 0) { |
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73 | cStartChan[iIF] += cNChan[iIF]; |
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74 | } else if (cStartChan[iIF] > cNChan[iIF]) { |
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75 | cStartChan[iIF] = cNChan[iIF]; |
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76 | } |
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77 | |
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78 | if (cEndChan[iIF] <= 0) { |
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79 | cEndChan[iIF] += cNChan[iIF]; |
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80 | } else if (cEndChan[iIF] > cNChan[iIF]) { |
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81 | cEndChan[iIF] = cNChan[iIF]; |
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82 | } |
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83 | |
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84 | maxNChan = max(maxNChan, abs(cEndChan[iIF] - cStartChan[iIF]) + 1); |
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85 | } |
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86 | |
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87 | cGetSpectra = getSpectra && cHaveSpectra; |
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88 | cGetXPol = getXPol && cGetXPol; |
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89 | cGetFeedPos = getFeedPos; |
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90 | cCoordSys = coordSys; |
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91 | |
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92 | |
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93 | return maxNChan; |
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94 | } |
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