| 1 | //#--------------------------------------------------------------------------- |
|---|
| 2 | //# FITSreader.cc: ATNF single-dish FITS reader. |
|---|
| 3 | //#--------------------------------------------------------------------------- |
|---|
| 4 | //# livedata - processing pipeline for single-dish, multibeam spectral data. |
|---|
| 5 | //# Copyright (C) 2000-2009, Australia Telescope National Facility, CSIRO |
|---|
| 6 | //# |
|---|
| 7 | //# This file is part of livedata. |
|---|
| 8 | //# |
|---|
| 9 | //# livedata is free software: you can redistribute it and/or modify it under |
|---|
| 10 | //# the terms of the GNU General Public License as published by the Free |
|---|
| 11 | //# Software Foundation, either version 3 of the License, or (at your option) |
|---|
| 12 | //# any later version. |
|---|
| 13 | //# |
|---|
| 14 | //# livedata is distributed in the hope that it will be useful, but WITHOUT |
|---|
| 15 | //# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
|---|
| 16 | //# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
|---|
| 17 | //# more details. |
|---|
| 18 | //# |
|---|
| 19 | //# You should have received a copy of the GNU General Public License along |
|---|
| 20 | //# with livedata. If not, see <http://www.gnu.org/licenses/>. |
|---|
| 21 | //# |
|---|
| 22 | //# Correspondence concerning livedata may be directed to: |
|---|
| 23 | //# Internet email: mcalabre@atnf.csiro.au |
|---|
| 24 | //# Postal address: Dr. Mark Calabretta |
|---|
| 25 | //# Australia Telescope National Facility, CSIRO |
|---|
| 26 | //# PO Box 76 |
|---|
| 27 | //# Epping NSW 1710 |
|---|
| 28 | //# AUSTRALIA |
|---|
| 29 | //# |
|---|
| 30 | //# http://www.atnf.csiro.au/computing/software/livedata.html |
|---|
| 31 | //# $Id: FITSreader.cc,v 19.4 2009-09-29 07:33:38 cal103 Exp $ |
|---|
| 32 | //#--------------------------------------------------------------------------- |
|---|
| 33 | //# The FITSreader class is an abstract base class for the Parkes Multibeam |
|---|
| 34 | //# RPFITS and SDFITS readers. |
|---|
| 35 | //# |
|---|
| 36 | //# Original: 2000/07/28 Mark Calabretta |
|---|
| 37 | //#--------------------------------------------------------------------------- |
|---|
| 38 | |
|---|
| 39 | #include <atnf/PKSIO/FITSreader.h> |
|---|
| 40 | |
|---|
| 41 | #include <algorithm> |
|---|
| 42 | |
|---|
| 43 | using namespace std; |
|---|
| 44 | |
|---|
| 45 | //--------------------------------------------------------- FITSreader::select |
|---|
| 46 | |
|---|
| 47 | // Set data selection criteria. Note that cBeams and cIFs, the addresses of |
|---|
| 48 | // int arrays, are returned by open() thereby allowing their elements to be |
|---|
| 49 | // modified directly elsewhere (specifically by PKSFITSreader::select()). |
|---|
| 50 | |
|---|
| 51 | int FITSreader::select( |
|---|
| 52 | const int startChan[], |
|---|
| 53 | const int endChan[], |
|---|
| 54 | const int refChan[], |
|---|
| 55 | const int getSpectra, |
|---|
| 56 | const int getXPol, |
|---|
| 57 | const int coordSys) |
|---|
| 58 | { |
|---|
| 59 | int maxNChan = 0; |
|---|
| 60 | |
|---|
| 61 | for (int iIF = 0; iIF < cNIF; iIF++) { |
|---|
| 62 | if (!cIFs[iIF]) { |
|---|
| 63 | continue; |
|---|
| 64 | } |
|---|
| 65 | |
|---|
| 66 | cStartChan[iIF] = startChan[iIF]; |
|---|
| 67 | cEndChan[iIF] = endChan[iIF]; |
|---|
| 68 | cRefChan[iIF] = refChan[iIF]; |
|---|
| 69 | |
|---|
| 70 | if (cStartChan[iIF] <= 0) { |
|---|
| 71 | cStartChan[iIF] += cNChan[iIF]; |
|---|
| 72 | } else if (cStartChan[iIF] > cNChan[iIF]) { |
|---|
| 73 | cStartChan[iIF] = cNChan[iIF]; |
|---|
| 74 | } |
|---|
| 75 | |
|---|
| 76 | if (cEndChan[iIF] <= 0) { |
|---|
| 77 | cEndChan[iIF] += cNChan[iIF]; |
|---|
| 78 | } else if (cEndChan[iIF] > cNChan[iIF]) { |
|---|
| 79 | cEndChan[iIF] = cNChan[iIF]; |
|---|
| 80 | } |
|---|
| 81 | |
|---|
| 82 | maxNChan = max(maxNChan, abs(cEndChan[iIF] - cStartChan[iIF]) + 1); |
|---|
| 83 | } |
|---|
| 84 | |
|---|
| 85 | cGetSpectra = getSpectra && cHaveSpectra; |
|---|
| 86 | cGetXPol = getXPol && cGetXPol; |
|---|
| 87 | cCoordSys = coordSys; |
|---|
| 88 | |
|---|
| 89 | return maxNChan; |
|---|
| 90 | } |
|---|
