[1325] | 1 | //#--------------------------------------------------------------------------- |
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| 2 | //# FITSreader.cc: ATNF single-dish FITS reader. |
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| 3 | //#--------------------------------------------------------------------------- |
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[1720] | 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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[1720] | 7 | //# This file is part of livedata. |
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[1325] | 8 | //# |
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[1720] | 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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[1720] | 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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[1720] | 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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[1720] | 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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[1325] | 28 | //# AUSTRALIA |
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| 29 | //# |
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[1720] | 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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[1325] | 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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[1452] | 57 | const int coordSys) |
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[1325] | 58 | { |
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| 59 | int maxNChan = 0; |
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| 60 | |
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| 61 | for (int iIF = 0; iIF < cNIF; iIF++) { |
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| 62 | if (!cIFs[iIF]) { |
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| 63 | continue; |
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| 64 | } |
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| 65 | |
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| 66 | cStartChan[iIF] = startChan[iIF]; |
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| 67 | cEndChan[iIF] = endChan[iIF]; |
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| 68 | cRefChan[iIF] = refChan[iIF]; |
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| 69 | |
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| 70 | if (cStartChan[iIF] <= 0) { |
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| 71 | cStartChan[iIF] += cNChan[iIF]; |
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| 72 | } else if (cStartChan[iIF] > cNChan[iIF]) { |
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| 73 | cStartChan[iIF] = cNChan[iIF]; |
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| 74 | } |
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| 75 | |
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| 76 | if (cEndChan[iIF] <= 0) { |
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| 77 | cEndChan[iIF] += cNChan[iIF]; |
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| 78 | } else if (cEndChan[iIF] > cNChan[iIF]) { |
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| 79 | cEndChan[iIF] = cNChan[iIF]; |
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| 80 | } |
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| 81 | |
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| 82 | maxNChan = max(maxNChan, abs(cEndChan[iIF] - cStartChan[iIF]) + 1); |
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| 83 | } |
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| 84 | |
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| 85 | cGetSpectra = getSpectra && cHaveSpectra; |
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| 86 | cGetXPol = getXPol && cGetXPol; |
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[1452] | 87 | cCoordSys = coordSys; |
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[1325] | 88 | |
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| 89 | return maxNChan; |
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| 90 | } |
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