1 /* Function: cellfile
2 **
3 ** This function is a slightly modified version of the p.map function.
4 ** Modified: Paul W. Carlson April 1992
5 */
6
7 #include <string.h>
8 #include <grass/raster.h>
9 #include "local_proto.h"
10
read_cell(char * name,char * mapset)11 int read_cell(char *name, char *mapset)
12 {
13 /* full name can be "name@mapset in mapset" */
14 char fullname[GNAME_MAX + 2 * GMAPSET_MAX + 4];
15
16 PS.do_colortable = 0;
17 if (PS.cell_fd >= 0) {
18 Rast_close(PS.cell_fd);
19 G_free(PS.cell_name);
20 Rast_free_colors(&PS.colors);
21 PS.cell_fd = -1;
22 }
23
24 sprintf(fullname, "%s in %s", name, mapset);
25
26 if (Rast_read_colors(name, mapset, &PS.colors) == -1) {
27 error(fullname, "", "can't read color table");
28 return 0;
29 }
30 Rast_get_c_color_range(&PS.min_color, &PS.max_color, &PS.colors);
31
32 /* open raster map for reading */
33 PS.cell_fd = Rast_open_old(name, mapset);
34
35 strcpy(PS.celltitle, Rast_get_cell_title(name, mapset));
36 G_strip(PS.celltitle);
37 if (PS.celltitle[0] == 0)
38 sprintf(PS.celltitle, "(%s)", name);
39 PS.cell_name = G_store(name);
40 PS.cell_mapset = G_store(mapset);
41 PS.do_raster = 1;
42 return 1;
43 }
44