Vector library - Category index. More...

#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <grass/gis.h>
#include <grass/Vect.h>
#include <grass/glocale.h>

Include dependency graph for Vlib/cindex.c:

Go to the source code of this file.

Defines
#define	SEP "------------------------------------------------------------------------------------------\n"
Functions
int	Vect_cidx_get_num_fields (struct Map_info *Map)
	Get number of layer in category index.
int	Vect_cidx_get_field_number (struct Map_info *Map, int index)
	Get layer number for given index.
int	Vect_cidx_get_field_index (struct Map_info *Map, int field)
	Get layer index for given layer number.
int	Vect_cidx_get_num_unique_cats_by_index (struct Map_info *Map, int index)
	Get number of unique categories for given layer index.
int	Vect_cidx_get_num_cats_by_index (struct Map_info *Map, int index)
	Get number of categories for given layer index.
int	Vect_cidx_get_num_types_by_index (struct Map_info *Map, int field_index)
	Get number of types for given layer index.
int	Vect_cidx_get_type_count_by_index (struct Map_info Map, int field_index, int type_index, int type, int *count)
	Get type count field index and type index.
int	Vect_cidx_get_type_count (struct Map_info *Map, int field, int type)
	Get count of features of certain type by layer and type.
int	Vect_cidx_get_cat_by_index (struct Map_info Map, int field_index, int cat_index, int cat, int type, int id)
	Get number of categories for given field and category index.
int	Vect_cidx_find_next (struct Map_info Map, int field_index, int cat, int type_mask, int start_index, int type, int *id)
	Find next line/area id for given category, start_index and type_mask.
void	Vect_cidx_find_all (struct Map_info Map, int layer, int type_mask, int cat, struct ilist lines)
	Gind all line/area id's for given category.
int	Vect_cidx_dump (struct Map_info Map, FILE out)
	Write category index in text form to file.
int	Vect_cidx_save (struct Map_info *Map)
	Save category index.
int	Vect_cidx_open (struct Map_info *Map, int head_only)
	Read category index from file if exists.

Detailed Description

Vector library - Category index.

Higher level functions for reading/writing/manipulating vectors.

Author:: Radim Blazek

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

Definition in file Vlib/cindex.c.

Define Documentation

#define SEP "------------------------------------------------------------------------------------------\n"

Definition at line 377 of file Vlib/cindex.c.

Referenced by Vect_cidx_dump().

Function Documentation

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

Write category index in text form to file.

Parameters:

[in]	Map	vector map
[out]	out	output file

Returns:: 1 on success; 0 on error

Definition at line 388 of file Vlib/cindex.c.

References SEP, Vect_cidx_get_cat_by_index(), Vect_cidx_get_field_number(), Vect_cidx_get_num_cats_by_index(), Vect_cidx_get_num_fields(), Vect_cidx_get_num_types_by_index(), Vect_cidx_get_num_unique_cats_by_index(), and Vect_cidx_get_type_count_by_index().

void Vect_cidx_find_all	(	struct Map_info *	Map,
		int	layer,
		int	type_mask,
		int	cat,
		struct ilist *	lines
	)

Gind all line/area id's for given category.

Parameters:

[in]	Map	vector map
[in]	layer	layer number
[in]	type_mask	type of objects to search for
[in]	cat	category number
[out]	lines	array of ids of found lines/points

Returns:

Definition at line 342 of file Vlib/cindex.c.

References Vect_cidx_find_next(), Vect_cidx_get_field_index(), Vect_list_append(), and Vect_reset_list().

int Vect_cidx_find_next	(	struct Map_info *	Map,
		int	field_index,
		int	cat,
		int	type_mask,
		int	start_index,
		int *	type,
		int *	id
	)

Find next line/area id for given category, start_index and type_mask.

Parameters:

[in]	Map	vector map
[in]	field_index	layer index
[in]	cat	category number
[in]	type_mask	requested type
[in]	start_index	start search at this index (0 - whole category index)
[out]	type	returned type
[out]	id	returned line/area id

Returns:: index to array; -1 not found

Definition at line 269 of file Vlib/cindex.c.

Referenced by Vect_cidx_find_all().

int Vect_cidx_get_cat_by_index	(	struct Map_info *	Map,
		int	field_index,
		int	cat_index,
		int *	cat,
		int *	type,
		int *	id
	)

Get number of categories for given field and category index.

Parameters:

[in]	Map	vector map
[in]	field_index	layer index
[in]	cat_index	category index
[out]	cat	category number
[out]	type	feature type
[out]	id	feature id

Returns:: 1 OK; 0 on error

Definition at line 225 of file Vlib/cindex.c.

Referenced by Vect_cidx_dump().

int Vect_cidx_get_field_index	(	struct Map_info *	Map,
		int	field
	)

Get layer index for given layer number.

Parameters:

[in]	Map	vector map
[in]	field	layer number

Returns:: layer index; -1 if not found

Definition at line 75 of file Vlib/cindex.c.

Referenced by Vect_cidx_find_all(), and Vect_cidx_get_type_count().

int Vect_cidx_get_field_number	(	struct Map_info *	Map,
		int	index
	)

Get layer number for given index.

Parameters:

[in]	Map	vector map
[in]	index	layer index: from 0 to Vect_cidx_get_num_fields() - 1

Returns:: layer number

Definition at line 56 of file Vlib/cindex.c.

Referenced by Vect_cidx_dump().

int Vect_cidx_get_num_cats_by_index	(	struct Map_info *	Map,
		int	index
	)

Get number of categories for given layer index.

Parameters:

[in]	Map	vector map
[in]	index	layer index

Returns:: number of categories; -1 on error

Definition at line 121 of file Vlib/cindex.c.

Referenced by Vect_cidx_dump().

int Vect_cidx_get_num_fields ( struct Map_info * Map )

Get number of layer in category index.

Parameters:

[in] Map vector map

Returns:: number of layers

Definition at line 41 of file Vlib/cindex.c.

Referenced by Vect_cidx_dump().

int Vect_cidx_get_num_types_by_index	(	struct Map_info *	Map,
		int	field_index
	)

Get number of types for given layer index.

Parameters:

[in]	Map	vector map
[in]	field_index	layer index

Returns:: number of types; -1 on error

Definition at line 139 of file Vlib/cindex.c.

Referenced by Vect_cidx_dump().

int Vect_cidx_get_num_unique_cats_by_index	(	struct Map_info *	Map,
		int	index
	)

Get number of unique categories for given layer index.

Parameters:

[in]	Map	vector map
[in]	index	layer number

Returns:: number of unique categories; -1 on error

Definition at line 102 of file Vlib/cindex.c.

Referenced by Vect_cidx_dump().

int Vect_cidx_get_type_count	(	struct Map_info *	Map,
		int	field,
		int	type
	)

Get count of features of certain type by layer and type.

Parameters:

[in]	Map	vector map
[in]	field	layer number
[in]	type	feature type

Returns:: feature count; 0 if no features, no such field or no such type in cidx

Definition at line 184 of file Vlib/cindex.c.

References Vect_cidx_get_field_index().

int Vect_cidx_get_type_count_by_index	(	struct Map_info *	Map,
		int	field_index,
		int	type_index,
		int *	type,
		int *	count
	)

Get type count field index and type index.

Parameters:

[in]	Map	vector map
[in]	field_index	layer index
[in]	type_index	type index
[out]	type	feature type
[out]	count	number of items

Returns:: 1 OK; 0 on error

Definition at line 161 of file Vlib/cindex.c.

Referenced by Vect_cidx_dump().

int Vect_cidx_open	(	struct Map_info *	Map,
		int	head_only
	)

Read category index from file if exists.

Parameters:

[in]	Map	vector map
[in]	head_only	Read only header

Returns:: 0 on success; 1 if file does not exist; -1 error, file exists but cannot be read

Definition at line 487 of file Vlib/cindex.c.

References dig_cidx_init(), dig_file_init(), and dig_read_cidx().

Referenced by Vect__open_old().

int Vect_cidx_save ( struct Map_info * Map )

Save category index.

Parameters:

[in] Map vector map

Returns:: 0 on success; 1 on error

Definition at line 443 of file Vlib/cindex.c.

References dig__byte_order_out(), dig_file_init(), dig_init_portable(), and dig_write_cidx().

Referenced by Vect_close().

Defines

Functions

Detailed Description

Define Documentation

Function Documentation