WCSLIB: wtbarr.h Source File

WCSLIB 8.9

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wtbarr.h
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1/*============================================================================
2 WCSLIB 8.9 - an implementation of the FITS WCS standard.
3 Copyright (C) 1995-2026, Mark Calabretta
4
5 This file is part of WCSLIB.
6
7 WCSLIB is free software: you can redistribute it and/or modify it under the
8 terms of the GNU Lesser General Public License as published by the Free
9 Software Foundation, either version 3 of the License, or (at your option)
10 any later version.
11
12 WCSLIB is distributed in the hope that it will be useful, but WITHOUT ANY
13 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
14 FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for
15 more details.
16
17 You should have received a copy of the GNU Lesser General Public License
18 along with WCSLIB. If not, see http://www.gnu.org/licenses.
19
20 Author: Mark Calabretta, Australia Telescope National Facility, CSIRO.
21 http://www.atnf.csiro.au/computing/software/wcs
22 $Id: wtbarr.h,v 8.9 2026/06/18 13:00:03 mcalabre Exp $
23*=============================================================================
24*
25* WCSLIB 8.9 - C routines that implement the FITS World Coordinate System
26* (WCS) standard. Refer to the README file provided with WCSLIB for an
27* overview of the library.
28*
29*
30* Summary of the wtbarr struct
31* ----------------------------
32* The wtbarr struct is used by wcstab() in extracting coordinate lookup tables
33* from a binary table extension (BINTABLE) and copying them into the tabprm
34* structs stored in wcsprm.
35*
36*
37* wtbarr struct - Extraction of coordinate lookup tables from BINTABLE
38* --------------------------------------------------------------------
39* Function wcstab(), which is invoked automatically by wcspih(), sets up an
40* array of wtbarr structs to assist in extracting coordinate lookup tables
41* from a binary table extension (BINTABLE) and copying them into the tabprm
42* structs stored in wcsprm. Refer to the usage notes for wcspih() and
43* wcstab() in wcshdr.h, and also the prologue to tab.h.
44*
45* For C++ usage, because of a name space conflict with the wtbarr typedef
46* defined in CFITSIO header fitsio.h, the wtbarr struct is renamed to wtbarr_s
47* by preprocessor macro substitution with scope limited to wtbarr.h itself,
48* and similarly in wcs.h.
49*
50* int i
51* (Given) Image axis number.
52*
53* int m
54* (Given) wcstab array axis number for index vectors.
55*
56* int kind
57* (Given) Character identifying the wcstab array type:
58* - c: coordinate array,
59* - i: index vector.
60*
61* char extnam[72]
62* (Given) EXTNAME identifying the binary table extension.
63*
64* int extver
65* (Given) EXTVER identifying the binary table extension.
66*
67* int extlev
68* (Given) EXTLEV identifying the binary table extension.
69*
70* char ttype[72]
71* (Given) TTYPEn identifying the column of the binary table that contains
72* the wcstab array.
73*
74* long row
75* (Given) Table row number.
76*
77* int ndim
78* (Given) Expected dimensionality of the wcstab array.
79*
80* int *dimlen
81* (Given) Address of the first element of an array of int of length ndim
82* into which the wcstab array axis lengths are to be written.
83*
84* double **arrayp
85* (Given) Pointer to an array of double which is to be allocated by the
86* user and into which the wcstab array is to be written.
87*
88*===========================================================================*/
89
90#ifndef WCSLIB_WTBARR
91#define WCSLIB_WTBARR
92
93#ifdef __cplusplus
94extern "C" {
95#define wtbarr wtbarr_s // See prologue above.
96#endif
97 // For extracting wcstab arrays. Matches
98 // the wtbarr typedef defined in CFITSIO
99 // header fitsio.h.
100struct wtbarr {
101 int i; // Image axis number.
102 int m; // Array axis number for index vectors.
103 int kind; // wcstab array type.
104 char extnam[72]; // EXTNAME of binary table extension.
105 int extver; // EXTVER of binary table extension.
106 int extlev; // EXTLEV of binary table extension.
107 char ttype[72]; // TTYPEn of column containing the array.
108 long row; // Table row number.
109 int ndim; // Expected wcstab array dimensionality.
110 int *dimlen; // Where to write the array axis lengths.
111 double **arrayp; // Where to write the address of the array
112 // allocated to store the wcstab array.
113};
114
115#ifdef __cplusplus
116#undef wtbarr
117}
118#endif
119
120#endif // WCSLIB_WTBARR
wtbarr
Extraction of coordinate lookup tables from BINTABLE.
Definition getwcstab.h:167
wtbarr::extlev
int extlev
Definition getwcstab.h:173
wtbarr::m
int m
Definition getwcstab.h:169
wtbarr::extver
int extver
Definition getwcstab.h:172
wtbarr::row
long row
Definition getwcstab.h:175
wtbarr::arrayp
double ** arrayp
Definition getwcstab.h:178
wtbarr::ttype
char ttype[72]
Definition getwcstab.h:174
wtbarr::i
int i
Definition getwcstab.h:168
wtbarr::dimlen
int * dimlen
Definition getwcstab.h:177
wtbarr::extnam
char extnam[72]
Definition getwcstab.h:171
wtbarr::ndim
int ndim
Definition getwcstab.h:176
wtbarr::kind
int kind
Definition getwcstab.h:170