build_sfa.c File Reference

Vector library - Building pseudo-topology for simple feature access. More...

#include <stdlib.h>
#include <grass/gis.h>
#include <grass/vector.h>
#include <grass/glocale.h>
#include <ogr_api.h>
#include "pg_local_proto.h"

Include dependency graph for build_sfa.c:

Go to the source code of this file.

Functions
int	Vect__build_sfa (struct Map_info *Map, int build)
	Build pseudo-topology (for simple features) - internal use only.
int	Vect_fidx_dump (struct Map_info *Map, FILE *out)
	Dump feature index to file.

Detailed Description

Vector library - Building pseudo-topology for simple feature access.

Higher level functions for reading/writing/manipulating vectors.

Line offset is

• centroids : FID
• other types : index of the first record (which is FID) in offset array.

SPDX-FileCopyrightText: 2001-2012 GRASS Development Team SPDX-License-Identifier: GPL-2.0-or-later

Author

Radim Blazek

Piero Cavalieri

Various updates for GRASS 7 by Martin Landa <landa.martin gmail.com>

Definition in file build_sfa.c.

Function Documentation

Vect__build_sfa()

int Vect__build_sfa	(	struct Map_info *	Map,
		int	build
	)

Build pseudo-topology (for simple features) - internal use only.

See Vect_build_ogr() and Vect_build_pg() for implementation issues.

Build levels:

• GV_BUILD_NONE
• GV_BUILD_BASE
• GV_BUILD_ATTACH_ISLES
• GV_BUILD_CENTROIDS
• GV_BUILD_ALL

Parameters

Map	pointer to Map_info structure
build	build level

Returns

1 on success

0 on error

Definition at line 694 of file build_sfa.c.

References _, Plus_head::built, G_fatal_error(), GV_BUILD_BASE, GV_FORMAT_OGR, GV_FORMAT_OGR_DIRECT, GV_FORMAT_POSTGIS, and Vect__build_downgrade().

Referenced by Vect_build_ogr(), and Vect_build_pg().

Vect_fidx_dump()

int Vect_fidx_dump	(	struct Map_info *	Map,
		FILE *	out
	)

Dump feature index to file.

Parameters

Map	pointer to Map_info struct
out	file for output (stdout/stderr for example)

Returns

1 on success

0 on error

Definition at line 740 of file build_sfa.c.

References _, Format_info_offset::array, Format_info_offset::array_num, G_warning(), GV_FORMAT_OGR, GV_FORMAT_POSTGIS, Vect_get_finfo_geometry_type(), Vect_get_num_lines(), Vect_maptype(), and Vect_maptype_info().