read.c File Reference

#include <grass/Vect.h>

Include dependency graph for read.c:

Go to the source code of this file.

Functions
int	Vect_read_next_line (struct Map_info *Map, struct line_pnts *line_p, struct line_cats *line_c)
	get next vector line ?
int	Vect_read_line (struct Map_info *Map, struct line_pnts *line_p, struct line_cats *line_c, int line)
	get vector line ?
int	Vect_line_alive (struct Map_info *Map, int line)
	check if line is alive or dead
int	Vect_node_alive (struct Map_info *Map, int node)
	check if node is alive or dead
int	Vect_area_alive (struct Map_info *Map, int area)
	check if area is alive or dead
int	Vect_isle_alive (struct Map_info *Map, int isle)
	check if isle is alive or dead

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Function Documentation

int Vect_area_alive	(	struct Map_info *	Map,
		int	area
	)

check if area is alive or dead

Returns:

1 if area alive, 0 if area is dead

Parameters:

Map_info

structure, area number

Definition at line 139 of file read.c.

Referenced by Vect_build_partial(), and Vect_remove_small_areas().

int Vect_isle_alive	(	struct Map_info *	Map,
		int	isle
	)

check if isle is alive or dead

Returns:

1 if isle alive, 0 if isle is dead

Parameters:

Map_info

structure, isle number

Definition at line 153 of file read.c.

int Vect_line_alive	(	struct Map_info *	Map,
		int	line
	)

check if line is alive or dead

Returns:

1 if line alive, 0 if line is dead

Parameters:

Map_info

structure, line number

Definition at line 111 of file read.c.

Referenced by remove_bridges(), Vect_break_lines(), Vect_break_polygons(), Vect_remove_duplicates(), Vect_remove_small_areas(), and Vect_snap_lines().

int Vect_node_alive	(	struct Map_info *	Map,
		int	node
	)

check if node is alive or dead

Returns:

1 if node alive, 0 if node is dead

Parameters:

Map_info

structure, node number

Definition at line 125 of file read.c.

Referenced by remove_dangles(), and Vect_clean_small_angles_at_nodes().

int Vect_read_line	(	struct Map_info *	Map,
		struct line_pnts *	line_p,
		struct line_cats *	line_c,
		int	line
	)

get vector line ?

Returns:

line type, -1 on Out of memory, -2 on EOF

Parameters:

Map_info

structure, line_pnts structure, line_cats structure, line number

Definition at line 85 of file read.c.

Referenced by remove_bridges(), remove_dangles(), Vect_break_lines(), Vect_break_polygons(), Vect_build_line_area(), Vect_build_nat(), Vect_clean_small_angles_at_nodes(), Vect_copy_map_lines(), Vect_find_line(), Vect_get_area_cats(), Vect_get_area_points(), Vect_get_isle_points(), Vect_get_line_cat(), Vect_net_build_graph(), Vect_net_nearest_nodes(), Vect_net_shortest_path_coor(), Vect_overlay_and(), Vect_point_in_area_outer_ring(), Vect_point_in_island(), Vect_remove_duplicates(), Vect_remove_small_areas(), Vect_select_lines_by_polygon(), Vect_set_varray_from_cat_list(), Vect_set_varray_from_db(), and Vect_snap_lines().

int Vect_read_next_line	(	struct Map_info *	Map,
		struct line_pnts *	line_p,
		struct line_cats *	line_c
	)

get next vector line ?

Returns:

line type, -1 on Out of memory, -2 on EOF

Parameters:

Map_info

structure, line_pnts structure, line_cats structure

Definition at line 58 of file read.c.

Referenced by Vect_build_nat(), and Vect_copy_map_lines().