vrt.c File Reference

Raster Library - virtual GRASS raster maps. More...

#include <grass/gis.h>
#include <grass/raster.h>
#include <grass/gprojects.h>
#include <grass/glocale.h>
#include "R.h"

Include dependency graph for vrt.c:

Go to the source code of this file.

Functions
int	cmp_wnd (const void *a, const void *b)
struct R_vrt *	Rast_get_vrt (const char *vname, const char *vmapset)
void	Rast_close_vrt (struct R_vrt *vrt)
int	Rast_get_vrt_row (int fd, void *buf, int row, RASTER_MAP_TYPE data_type)

Detailed Description

Raster Library - virtual GRASS raster maps.

(C) 2010 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

Markus Metz

Definition in file vrt.c.

Function Documentation

cmp_wnd()

int cmp_wnd	(	const void *	a,
		const void *	b
	)

Definition at line 21 of file vrt.c.

Referenced by Rast_get_vrt().

Rast_close_vrt()

void Rast_close_vrt

(

struct R_vrt *

vrt

)

Definition at line 150 of file vrt.c.

References tileinfo::clist, G_free(), G_free_ilist(), tileinfo::mapset, tileinfo::name, R_vrt::tilecount, R_vrt::tileinfo, and R_vrt::tlist.

Rast_get_vrt()

struct R_vrt* Rast_get_vrt	(	const char *	vname,
		const char *	vmapset
	)

Definition at line 47 of file vrt.c.

References _, tileinfo::cellhd, tileinfo::clist, cmp_wnd(), Cell_head::cols, Cell_head::east, Cell_head::ew_res, G_calloc, G_fatal_error(), G_find_raster(), G_find_raster2(), G_fopen_old_misc(), G_getl2(), G_ilist_add(), G_new_ilist(), G_realloc, G_store(), GNAME_MAX, tileinfo::mapset, name, tileinfo::name, Cell_head::north, NULL, Cell_head::proj, PROJECTION_LL, Rast_get_cellhd(), R__::rd_window, Cell_head::south, R_vrt::tilecount, R_vrt::tileinfo, R_vrt::tlist, and Cell_head::west.

Referenced by Rast__open_old().

Rast_get_vrt_row()

int Rast_get_vrt_row	(	int	fd,
		void *	buf,
		int	row,
		RASTER_MAP_TYPE	data_type
	)

Definition at line 171 of file vrt.c.

References CELL_TYPE, tileinfo::cellhd, tileinfo::clist, Cell_head::cols, DCELL_TYPE, FCELL_TYPE, R__::fileinfo, G_free(), tileinfo::mapset, ilist::n_values, tileinfo::name, Cell_head::north, Cell_head::ns_res, Rast__open_old(), Rast_allocate_input_buf(), Rast_cell_size(), Rast_get_row_nomask(), Rast_is_null_value(), Rast_set_null_value(), Rast_unopen(), R__::rd_window, Cell_head::rows, Cell_head::south, R_vrt::tileinfo, R_vrt::tlist, ilist::value, and fileinfo::vrt.