reclass.c File Reference

Raster Library - Check if raster map is reclassified. More...

#include <string.h>
#include <grass/gis.h>
#include <grass/raster.h>
#include <grass/glocale.h>

Include dependency graph for reclass.c:

Go to the source code of this file.

Functions
int	Rast_is_reclass (const char *name, const char *mapset, char *rname, char *rmapset)
	Check if raster map is reclassified. More...
int	Rast_is_reclassed_to (const char *name, const char *mapset, int *nrmaps, char ***rmaps)
	Get child reclass maps list. More...
int	Rast_get_reclass (const char *name, const char *mapset, struct Reclass *reclass)
	Get reclass. More...
void	Rast_free_reclass (struct Reclass *reclass)
	Free Reclass structure. More...
int	Rast_put_reclass (const char *name, const struct Reclass *reclass)
	Put reclass. More...

Detailed Description

Raster Library - Check if raster map is reclassified.

(C) 2001-2009 by the GRASS Development Team

This program is free software under the GNU General Public License (>=v2). Read the file COPYING that comes with GRASS for details.

Author

Original author CERL

Definition in file reclass.c.

Function Documentation

Rast_free_reclass()

void Rast_free_reclass

(

struct Reclass *

reclass

)

Free Reclass structure.

Parameters

reclass

pointer to Reclass structure

Definition at line 183 of file reclass.c.

References G_free(), Reclass::mapset, Reclass::name, NULL, Reclass::num, RECLASS_TABLE, Reclass::table, and Reclass::type.

Rast_get_reclass()

int Rast_get_reclass	(	const char *	name,
		const char *	mapset,
		struct Reclass *	reclass
	)

Get reclass.

Parameters

	name	map name
	mapset	mapset name
[out]	reclass	pointer to Reclass structure

Returns

-1 on error

type code

Definition at line 140 of file reclass.c.

Referenced by Rast__open_old().

Rast_is_reclass()

int Rast_is_reclass	(	const char *	name,
		const char *	mapset,
		char *	rname,
		char *	rmapset
	)

Check if raster map is reclassified.

This function determines if the raster map name in mapset is a reclass file. If it is, then the name and mapset of the referenced raster map are copied into the rname and rmapset buffers.

Parameters

	name	map name
	mapset	mapset name
[out]	rname	name of reference map
[out]	rmapset	mapset where reference map lives

Returns

1 if it is a reclass file

0 if it is not

-1 if there was a problem reading the raster header

Definition at line 43 of file reclass.c.

Referenced by Rast__mask_info(), and Rast_get_cellhd().

Rast_is_reclassed_to()

int Rast_is_reclassed_to	(	const char *	name,
		const char *	mapset,
		int *	nrmaps,
		char ***	rmaps
	)

Get child reclass maps list.

This function generates a child reclass maps list from the cell_misc/reclassed_to file which stores this list. The cell_misc/reclassed_to file is written by Rast_put_reclass(). Rast_is_reclassed_to() is used by g.rename, g.remove and r.reclass to prevent accidentally deleting the parent map of a reclassed raster map.

Parameters

	name	map name
	mapset	mapset name
[out]	nrmaps	number of reference maps
[out]	rmaps	array of names of reference maps

Returns

number of reference maps

-1 on error

Definition at line 79 of file reclass.c.

References G_fopen_old_misc(), G_malloc, G_realloc, l, and NULL.

Rast_put_reclass()

int Rast_put_reclass	(	const char *	name,
		const struct Reclass *	reclass
	)

Put reclass.

Parameters

name	map name
reclass	pointer to Reclass structure

Returns

-1 on error

1 on success

Definition at line 262 of file reclass.c.

References _, G_fatal_error(), GNAME_MAX, GPATH_MAX, max, Reclass::max, min, Reclass::min, Reclass::num, RECLASS_TABLE, and Reclass::type.