1 | //#--------------------------------------------------------------------------- |
---|
2 | //# FITSreader.cc: ATNF single-dish FITS reader. |
---|
3 | //#--------------------------------------------------------------------------- |
---|
4 | //# Copyright (C) 2000-2006 |
---|
5 | //# Mark Calabretta, ATNF |
---|
6 | //# |
---|
7 | //# This library is free software; you can redistribute it and/or modify it |
---|
8 | //# under the terms of the GNU Library General Public License as published by |
---|
9 | //# the Free Software Foundation; either version 2 of the License, or (at your |
---|
10 | //# option) any later version. |
---|
11 | //# |
---|
12 | //# This library is distributed in the hope that it will be useful, but WITHOUT |
---|
13 | //# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
---|
14 | //# FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public |
---|
15 | //# License for more details. |
---|
16 | //# |
---|
17 | //# You should have received a copy of the GNU Library General Public License |
---|
18 | //# along with this library; if not, write to the Free Software Foundation, |
---|
19 | //# Inc., 675 Massachusetts Ave, Cambridge, MA 02139, USA. |
---|
20 | //# |
---|
21 | //# Correspondence concerning this software should be addressed as follows: |
---|
22 | //# Internet email: mcalabre@atnf.csiro.au. |
---|
23 | //# Postal address: Dr. Mark Calabretta, |
---|
24 | //# Australia Telescope National Facility, |
---|
25 | //# P.O. Box 76, |
---|
26 | //# Epping, NSW, 2121, |
---|
27 | //# AUSTRALIA |
---|
28 | //# |
---|
29 | //# $Id: FITSreader.cc,v 19.3 2008-09-12 02:37:37 cal103 Exp $ |
---|
30 | //#--------------------------------------------------------------------------- |
---|
31 | //# The FITSreader class is an abstract base class for the Parkes Multibeam |
---|
32 | //# RPFITS and SDFITS readers. |
---|
33 | //# |
---|
34 | //# Original: 2000/07/28 Mark Calabretta |
---|
35 | //#--------------------------------------------------------------------------- |
---|
36 | |
---|
37 | #include <atnf/PKSIO/FITSreader.h> |
---|
38 | |
---|
39 | #include <algorithm> |
---|
40 | |
---|
41 | using namespace std; |
---|
42 | |
---|
43 | //--------------------------------------------------------- FITSreader::select |
---|
44 | |
---|
45 | // Set data selection criteria. Note that cBeams and cIFs, the addresses of |
---|
46 | // int arrays, are returned by open() thereby allowing their elements to be |
---|
47 | // modified directly elsewhere (specifically by PKSFITSreader::select()). |
---|
48 | |
---|
49 | int FITSreader::select( |
---|
50 | const int startChan[], |
---|
51 | const int endChan[], |
---|
52 | const int refChan[], |
---|
53 | const int getSpectra, |
---|
54 | const int getXPol, |
---|
55 | const int coordSys) |
---|
56 | { |
---|
57 | int maxNChan = 0; |
---|
58 | |
---|
59 | for (int iIF = 0; iIF < cNIF; iIF++) { |
---|
60 | if (!cIFs[iIF]) { |
---|
61 | continue; |
---|
62 | } |
---|
63 | |
---|
64 | cStartChan[iIF] = startChan[iIF]; |
---|
65 | cEndChan[iIF] = endChan[iIF]; |
---|
66 | cRefChan[iIF] = refChan[iIF]; |
---|
67 | |
---|
68 | if (cStartChan[iIF] <= 0) { |
---|
69 | cStartChan[iIF] += cNChan[iIF]; |
---|
70 | } else if (cStartChan[iIF] > cNChan[iIF]) { |
---|
71 | cStartChan[iIF] = cNChan[iIF]; |
---|
72 | } |
---|
73 | |
---|
74 | if (cEndChan[iIF] <= 0) { |
---|
75 | cEndChan[iIF] += cNChan[iIF]; |
---|
76 | } else if (cEndChan[iIF] > cNChan[iIF]) { |
---|
77 | cEndChan[iIF] = cNChan[iIF]; |
---|
78 | } |
---|
79 | |
---|
80 | maxNChan = max(maxNChan, abs(cEndChan[iIF] - cStartChan[iIF]) + 1); |
---|
81 | } |
---|
82 | |
---|
83 | cGetSpectra = getSpectra && cHaveSpectra; |
---|
84 | cGetXPol = getXPol && cGetXPol; |
---|
85 | cCoordSys = coordSys; |
---|
86 | |
---|
87 | return maxNChan; |
---|
88 | } |
---|