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Geografic-In...
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lib
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vector
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Vlib
Martin Landa 3b4bd4f571 vlib: fix https://trac.osgeo.org/grass/changeset/55643 (is_isle) 12 years ago
..
Makefile 11e44a917a vlib: Vect_read_colors() added 14 years ago
README 3aa7302eb1 spelling 13 years ago
area.c 46cd09da20 Vlib: update for changed fn defs 13 years ago
array.c 1b5c5cea0b fix compilation without gdal/ogr 13 years ago
ascii.c 8940295566 v.out.ascii: more guisections 12 years ago
box.c fa2e73bd88 vlib: Vect_get_line|area|isle_box() return -1 on error 12 years ago
break_lines.c fa2e73bd88 vlib: Vect_get_line|area|isle_box() return -1 on error 12 years ago
break_polygons.c 6161703763 vlib(pg): add_line_to_topo_pg() and delete_line_from_topo_pg() added 12 years ago
bridges.c 955ec9ab4c vlib: add V2__delete_line_topo_nat() 12 years ago
buffer.c 1b5c5cea0b fix compilation without gdal/ogr 13 years ago
buffer2.c f2ec32951d fix some doxygen warnings 12 years ago
build.c fa2e73bd88 vlib: Vect_get_line|area|isle_box() return -1 on error 12 years ago
build_nat.c 491eed2fdf vlib/PostGIS Topo: implement deleting faces (work in progress) 12 years ago
build_ogr.c 55e6a4a3ff vlib(pg): skip features without geometry 13 years ago
build_pg.c d8f41e6790 vlib(pg): report error when inserting faces fails 12 years ago
build_sfa.c 05322be998 PG topo support major update 12 years ago
cats.c e3e21fe9e3 add layer number to cat list 12 years ago
cindex.c 8fa64ef176 vlib: Vect_open_tmp_new() implemented 12 years ago
clean_nodes.c 19c13ce399 update headers, revert https://trac.osgeo.org/grass/changeset/37860 14 years ago
close.c a644db1e21 vlib: fix https://trac.osgeo.org/grass/changeset/55681 side-affect for external formats (Vect__delete() recursive call) 12 years ago
close_nat.c a644db1e21 vlib: fix https://trac.osgeo.org/grass/changeset/55681 side-affect for external formats (Vect__delete() recursive call) 12 years ago
close_ogr.c 60496bf0ad vlib: when writing to external formats (defined by v.external.out) vector library creates link automatically when closing the map (no need to run v.external explicitly) 13 years ago
close_pg.c 2ebf4bcd86 v.out.postgis: better support for creation options 12 years ago
color_read.c 1b5c5cea0b fix compilation without gdal/ogr 13 years ago
color_remove.c 4e31098139 vlib: store alternative color tables to `vcolr2/mapset/name` 13 years ago
color_write.c 1b5c5cea0b fix compilation without gdal/ogr 13 years ago
constraint.c a658901634 Vlib: dox: updating documentation according to V2_read_next_line_nat etc. where Vect_box_overlap is used 13 years ago
copy.c 3b4bd4f571 vlib: fix https://trac.osgeo.org/grass/changeset/55643 (is_isle) 12 years ago
dangles.c 19c13ce399 update headers, revert https://trac.osgeo.org/grass/changeset/37860 14 years ago
dbcolumns.c 1dba9b62d4 dox: fixing several doxygen warnings (wrong file names, typos, lt gt chars) 12 years ago
dgraph.c 3d05792b0a avoid debug level 0 -- G_debug(0, ...) 12 years ago
dgraph.h b06b8a0105 vectorlib: 16 years ago
e_intersect.c 05322be998 PG topo support major update 12 years ago
e_intersect.h 11cd111cbd Vlib: Vect_line_buffe2(), Vect_area_buffer2(), Vect_point_buffer2() and 16 years ago
field.c 6cad7decab vlib: read_dblinks_ogr(): fatal error -> warning 12 years ago
find.c 46cd09da20 Vlib: update for changed fn defs 13 years ago
geos.c 09b7db1dd9 doxygen errors fixed 12 years ago
graph.c 19c13ce399 update headers, revert https://trac.osgeo.org/grass/changeset/37860 14 years ago
handler.c 5bcb75e3b6 vlib: free allocated string in error_handler_io() 13 years ago
header.c 8fa64ef176 vlib: Vect_open_tmp_new() implemented 12 years ago
header_finfo.c 083ccea1c1 vlib(pg): use temporary map in native format when output is simple features 12 years ago
hist.c 60496bf0ad vlib: when writing to external formats (defined by v.external.out) vector library creates link automatically when closing the map (no need to run v.external explicitly) 13 years ago
init_head.c 8fa64ef176 vlib: Vect_open_tmp_new() implemented 12 years ago
intersect.c 49122254e9 Vlib: optimize Vect_line_intersection() 12 years ago
legal_vname.c 22e3e2d77b replace GR_FATAL_* (rasters), GV_FATAL_* (vectors) by G_FATAL_* 13 years ago
level.c 1ae866496c vlib: unify \file doxygen instruction (cosmetics) 14 years ago
level_two.c 6161703763 vlib(pg): add_line_to_topo_pg() and delete_line_from_topo_pg() added 12 years ago
line.c 09b7db1dd9 doxygen errors fixed 12 years ago
list.c e70a921252 change boxlist_add args 12 years ago
local_proto.h 1de4c17e37 vlib: implement V2__write_area_ogr() + V2__write_area_sfa() 12 years ago
map.c 1f8de160fb Vlib: fix https://trac.osgeo.org/grass/changeset/55401, windows can not delete files that are open, we have fixed that problem here before 12 years ago
merge_lines.c 4d0f88dfb8 Vlib: simplify code 12 years ago
net.c e8f69b5901 Vlib: fix index to array 12 years ago
open.c a3192cbcb5 vlib(pg): use tmp maps also for PostGIS Topology 12 years ago
open_nat.c 8fa64ef176 vlib: Vect_open_tmp_new() implemented 12 years ago
open_ogr.c bbbd600dd5 vlib/ogr|pg: remove unused function 12 years ago
open_pg.c bbbd600dd5 vlib/ogr|pg: remove unused function 12 years ago
overlap.c d855a1780a Vlib: update constraints which are now hidden in struct 13 years ago
overlay.c 8dd511a034 Vlib overlay: adjust for new topology 12 years ago
pg_local_proto.h 1de4c17e37 vlib: implement V2__write_area_ogr() + V2__write_area_sfa() 12 years ago
poly.c 46cd09da20 Vlib: update for changed fn defs 13 years ago
read.c 955ec9ab4c vlib: add V2__delete_line_topo_nat() 12 years ago
read_nat.c 955ec9ab4c vlib: add V2__delete_line_topo_nat() 12 years ago
read_ogr.c 0764296ef8 dox: reducing doxygen warnings 12 years ago
read_pg.c 6161703763 vlib(pg): add_line_to_topo_pg() and delete_line_from_topo_pg() added 12 years ago
read_sfa.c 955ec9ab4c vlib: add V2__delete_line_topo_nat() 12 years ago
remove_areas.c 765ea55858 Vect_remove_small_areas(): report number of removed areas on standard message level (it's quite important info) 12 years ago
remove_duplicates.c dafac9e75a Vlib: optimize Vect_remove_duplicates() 12 years ago
rewind.c 7c8d5a94b1 vlib: first steps for full PostGIS topology support 13 years ago
rewind_nat.c 963bdb2b5d vlib: *initial* support for native reading PostGIS data (without OGR library) 13 years ago
rewind_ogr.c 963bdb2b5d vlib: *initial* support for native reading PostGIS data (without OGR library) 13 years ago
rewind_pg.c 9d107310d9 vlib (PostGIS Topo): better support for areas/faces (work in progress) 12 years ago
rtree_search.c f9b103cf33 Vlib: changed rtree search fn 13 years ago
select.c fa2e73bd88 vlib: Vect_get_line|area|isle_box() return -1 on error 12 years ago
simple_features.c 40064fc077 vlib: better doxygen documentation for simple_features.c 13 years ago
sindex.c d1f6f39e07 Vlib: optimize Vect_select_lines_by_box() 12 years ago
snap.c 4457f85045 vlib: Vect_snap_lines(): progress messages should be printed on verbosity level 1 12 years ago
tin.c 1ae866496c vlib: unify \file doxygen instruction (cosmetics) 14 years ago
type.c 19c13ce399 update headers, revert https://trac.osgeo.org/grass/changeset/37860 14 years ago
window.c 1ae866496c vlib: unify \file doxygen instruction (cosmetics) 14 years ago
write.c 955ec9ab4c vlib: add V2__delete_line_topo_nat() 12 years ago
write_nat.c 955ec9ab4c vlib: add V2__delete_line_topo_nat() 12 years ago
write_ogr.c 12c95080e3 vlib: remove V2_open_new_ogr|pg() from public API 12 years ago
write_pg.c 6161703763 vlib(pg): add_line_to_topo_pg() and delete_line_from_topo_pg() added 12 years ago
write_sfa.c 1de4c17e37 vlib: implement V2__write_area_ogr() + V2__write_area_sfa() 12 years ago

README

Dangles
---------
GRASS doesn't allow areas/islands with dangles. If an island has dangle, it is not built
and attached to outer area and as a consequence, some functions do not work as expected.
For example Vect_area_area() and Vect_find_area().
See comments in build_nat.c: Vect_attach_centroids()

Category index
----------------
Category index is created when Vect_build(), i.e. Vect_build_partial(, GV_BUILD_ALL,)
is called. Plus_head.cidx_up_to_date is set to 1 if Category index is created.
Any later call to Vect_write_line() / Vect_rewrite_line() / Vect_delete_line() resets
Plus_head.cidx_up_to_date to 0 and doesn't update category index.
All modules using update on level 2 must call full build, i.e. Vect_build(), at the end.

All features without category are written to category index of field 0.
The category index also stores type of feature, that makes it possible to find areas
without centroid through category index.