1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
|
*=======================================================================
*
* WCSLIB 7.4 - an implementation of the FITS WCS standard.
* Copyright (C) 1995-2021, Mark Calabretta
*
* This file is part of WCSLIB.
*
* WCSLIB is free software: you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* WCSLIB is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with WCSLIB. If not, see http://www.gnu.org/licenses.
*
* Author: Mark Calabretta, Australia Telescope National Facility, CSIRO.
* http://www.atnf.csiro.au/people/Mark.Calabretta
* $Id: tpih1.f,v 7.4 2021/01/31 02:24:52 mcalabre Exp $
*=======================================================================
PROGRAM TPIH1
*-----------------------------------------------------------------------
*
* TPIH1 tests WCSPIH, the WCS FITS parser for image headers, and WCSFIX,
* which translates non-standard constructs. It reads a test header and
* uses WCSPRT to print the resulting WCSPRM structs.
*
* Input comes from file 'pih.fits'.
*
* WCSP, which is meant to hold an address, is declared as an INTEGER
* array of length 2 to accomodate 64-bit machines for which
* sizeof(void *) = 2*sizeof(int).
*-----------------------------------------------------------------------
LOGICAL GOTEND
INTEGER ALTS(0:26), CTRL, I, IERR, J, K, NKEYRC, NREJECT, NWCS,
: RELAX, WCSP(2)
CHARACTER CALTS(0:26)*2, KEYREC*80, HEADER*288001, INFILE*9
* On some systems, such as Sun Sparc, the struct MUST be aligned
* on a double precision boundary, done here using an equivalence.
* Failure to do this may result in mysterious "bus errors".
INCLUDE 'wcshdr.inc'
INCLUDE 'wcs.inc'
INCLUDE 'wcsfix.inc'
INTEGER WCS(WCSLEN), STAT(WCSFIX_NWCS)
DOUBLE PRECISION DUMMY
EQUIVALENCE (WCS,DUMMY)
DATA INFILE /'pih.fits'/
*-----------------------------------------------------------------------
WRITE (*, 10)
10 FORMAT (
: 'Testing WCSLIB parser for FITS image headers (tpih1.f)',/,
: '------------------------------------------------------',/)
* Open the FITS WCS test header for formatted, direct I/O.
OPEN (UNIT=1, FILE=INFILE, FORM='FORMATTED', ACCESS='DIRECT',
: RECL=80, IOSTAT=IERR)
IF (IERR.NE.0) THEN
WRITE (*, 20) IERR, INFILE
20 FORMAT ('ERROR',I3,' opening ',A)
GO TO 999
END IF
* Read in the FITS header, excluding COMMENT and HISTORY keyrecords.
K = 1
NKEYRC = 0
GOTEND = .FALSE.
DO 50 J = 0, 100
DO 40 I = 1, 36
READ (1, '(A80)', REC=36*J+I, IOSTAT=IERR) KEYREC
IF (IERR.NE.0) THEN
WRITE (*, 30) IERR
30 FORMAT ('ERROR',I3,' reading header.')
GO TO 999
END IF
IF (KEYREC(:8).EQ.' ') GO TO 40
IF (KEYREC(:8).EQ.'COMMENT ') GO TO 40
IF (KEYREC(:8).EQ.'HISTORY ') GO TO 40
HEADER(K:) = KEYREC
K = K + 80
NKEYRC = NKEYRC + 1
IF (KEYREC(:8).EQ.'END ') THEN
* An END keyrecord was read, read the rest of the block.
GOTEND = .TRUE.
END IF
40 CONTINUE
IF (GOTEND) GO TO 60
50 CONTINUE
60 CLOSE (UNIT=1)
HEADER(K:K) = CHAR (0)
WRITE (*, 70) NKEYRC
70 FORMAT ('Found',I4,' non-comment header keyrecords.',/)
* Cull all WCS keyrecords from the header but report illegal ones.
WRITE (*, 80)
80 FORMAT (/,'Illegal or extraneous WCS header keyrecords ',
: 'rejected by WCSPIH:')
RELAX = WCSHDR_all
CTRL = -2
* WCSPIH will allocate memory for NWCS intialized WCSPRM structs.
CALL FLUSH(6)
IERR = WCSPIH (HEADER, NKEYRC, RELAX, CTRL, NREJECT, NWCS, WCSP)
IF (IERR.NE.0) THEN
WRITE (*, 90) IERR
90 FORMAT ('WCSPIH ERROR',I2,'.')
GO TO 999
END IF
* List keyrecords that were not consumed by WCSPIH.
WRITE (*, 100)
100 FORMAT (//,'Non-WCS header keyrecords ignored by WCSPIH:')
DO 110 I = 1, 288001, 80
IF (HEADER(I:I).EQ.CHAR(0)) GO TO 120
WRITE (*, '(A)') HEADER(I:I+79)
110 CONTINUE
120 IERR = WCSIDX (NWCS, WCSP, ALTS)
WRITE (*, 130) NWCS
130 FORMAT (//,'Found',I2,' alternate coordinate descriptions with ',
: 'indices:',/,
: ' A B C D E F G H I J K L M N O P Q R S T U V W X Y Z')
DO 140 I = 0, 26
IF (ALTS(I).LT.0) THEN
CALTS(I) = ' -'
ELSE
WRITE (CALTS(I), '(I2)') ALTS(I)
END IF
140 CONTINUE
WRITE (*, '(27A)') CALTS
DO 190 I = 0, NWCS-1
WRITE (*, 150)
150 FORMAT (/,'------------------------------------',
: '------------------------------------')
* Copy into our WCSPRM struct.
IERR = WCSVCOPY (WCSP, I, WCS)
* Fix non-standard WCS keyvalues.
IERR = WCSFIX (7, 0, WCS, STAT)
IF (IERR.NE.0) THEN
WRITE (*, 160) (STAT(J), J=1,WCSFIX_NWCS)
160 FORMAT ('WCSFIX ERROR, status returns: (',(I2,:,','),')',/)
END IF
IERR = WCSSET (WCS)
IF (IERR.NE.0) THEN
WRITE (*, 170) IERR
170 FORMAT ('WCSSET ERROR',I2,'.')
GO TO 190
END IF
CALL FLUSH(6)
IERR = WCSPRT (WCS)
IF (IERR.NE.0) THEN
WRITE (*, 180) IERR
180 FORMAT ('WCSPRT ERROR',I2,'.')
GO TO 190
END IF
* Free memory (doesn't free memory allocated by WCSPIH).
IERR = WCSFREE (WCS)
190 CONTINUE
* Free the memory allocated by WCSPIH.
IERR = WCSVFREE (NWCS, WCSP)
999 CONTINUE
END
|
