GRASS 8 Programmer's Manual 8.6.0dev(2026)-f6f2c534ea
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sigfile.c
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1/*!
2 \file lib/imagery/sigfile.c
3
4 \brief Imagery Library - Signature file functions (statistics for i.maxlik).
5
6 (C) 2001-2008, 2013, 2021 by the GRASS Development Team
7
8 This program is free software under the GNU General Public License
9 (>=v2). Read the file COPYING that comes with GRASS for details.
10
11 \author USA CERL
12 */
13
14#include <string.h>
15#include <grass/imagery.h>
16
17/*!
18 \brief Create signature file
19
20 Returns a pointer to FILE for writing signature file.
21 Use fclose on the pointer to close after use.
22
23 \param name signature filename
24
25 \return pointer to FILE
26 \return NULL on error
27 */
29{
30 char dir[GNAME_MAX];
31 FILE *fd;
32
33 /* create sig directory */
36 fd = G_fopen_new_misc(dir, "sig", name);
37
38 return fd;
39}
40
41/*!
42 \brief Open existing signature file
43
44 Use fully qualified names for signatures from other mapsets.
45
46 Returns a pointer to FILE with signature. Use fclose on the pointer
47 after use.
48
49 \param name signature filename
50
51 \return pointer to FILE
52 \return NULL on error
53 */
55{
57 char dir[GNAME_MAX];
58 FILE *fd;
59
62
64 fd = G_fopen_old_misc(dir, "sig", sig_name, sig_mapset);
65
66 return fd;
67}
#define NULL
Definition ccmath.h:32
int G_unqualified_name(const char *, const char *, char *, char *)
Returns unqualified map name (without @ mapset)
Definition nme_in_mps.c:134
FILE * G_fopen_old_misc(const char *, const char *, const char *, const char *)
open a database misc file for reading
Definition open_misc.c:210
FILE * G_fopen_new_misc(const char *, const char *, const char *)
open a new database misc file
Definition open_misc.c:183
const char * G_mapset(void)
Get current mapset name.
Definition gis/mapset.c:33
void I_make_signatures_dir(I_SIGFILE_TYPE)
Make signature dir.
void I_get_signatures_dir(char *, I_SIGFILE_TYPE)
Get signature directory.
#define GMAPSET_MAX
Definition gis.h:197
#define GNAME_MAX
Definition gis.h:196
@ I_SIGFILE_TYPE_SIG
Definition imagery.h:194
const char * name
Definition named_colr.c:6
#define strcpy
Definition parson.c:66
FILE * I_fopen_signature_file_old(const char *name)
Open existing signature file.
Definition sigfile.c:54
FILE * I_fopen_signature_file_new(const char *name)
Create signature file.
Definition sigfile.c:28