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Geografic-In...
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lib
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vector
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Vlib
Markus Metz 8b2e587f4c Vlib: fix node costs for new topology 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 ab0558ac58 Vlib: init variable 12 years ago
box.c 2306002198 vector libs: optimize bbox search 13 years ago
break_lines.c 3852864fb5 Vlib: speed up Vect_break_lines() 13 years ago
break_polygons.c 76b67f7607 Added methods to modify rectangle boundary coordinates of different dimensions. Modified the names of several functions. Added doxygen style function descriptions. 12 years ago
bridges.c 46cd09da20 Vlib: update for changed fn defs 13 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 09b7db1dd9 doxygen errors fixed 12 years ago
build_nat.c 09b7db1dd9 doxygen errors fixed 12 years ago
build_ogr.c 55e6a4a3ff vlib(pg): skip features without geometry 13 years ago
build_pg.c f3db19afaf vlib/pg: build isles for PostGIS Topology access 13 years ago
build_sfa.c 9f386c79b7 vlib (pseudo-topo): fix for polygons with more then 20 rings 13 years ago
cats.c 6d875a014e Vlib: optimized category fns 12 years ago
cindex.c 0a381c333d vlib:cindex.c: cosmetics in doxygen strings 14 years ago
clean_nodes.c 19c13ce399 update headers, revert https://trac.osgeo.org/grass/changeset/37860 14 years ago
close.c 22fecc6eef vlib: check GRASS_VECTOR_PGFILE (defined by v.out.postgis) when opening/creating vector map 13 years ago
close_nat.c 19c13ce399 update headers, revert https://trac.osgeo.org/grass/changeset/37860 14 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 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
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 9a8ae6a28a Vlib: Vect_copy_map_lines_field(), copy != export 13 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 f3006b1a43 Vlib dgraph.c: use GRASS_EPSILON 13 years ago
dgraph.h b06b8a0105 vectorlib: 16 years ago
e_intersect.c 1b5c5cea0b fix compilation without gdal/ogr 13 years ago
e_intersect.h 11cd111cbd Vlib: Vect_line_buffe2(), Vect_area_buffer2(), Vect_point_buffer2() and 16 years ago
field.c 09b7db1dd9 doxygen errors fixed 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 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
header_finfo.c 1dba9b62d4 dox: fixing several doxygen warnings (wrong file names, typos, lt gt chars) 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 1655b43918 vlib(pg): introduce V1_rewrite_line_pg() and V1_rewrite_line_sfa() 13 years ago
intersect.c 76b67f7607 Added methods to modify rectangle boundary coordinates of different dimensions. Modified the names of several functions. Added doxygen style function descriptions. 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 09b7db1dd9 doxygen errors fixed 12 years ago
line.c 09b7db1dd9 doxygen errors fixed 12 years ago
list.c e70a921252 change boxlist_add args 12 years ago
map.c f702d7ebb4 Vlib partially revert https://trac.osgeo.org/grass/changeset/52776 12 years ago
merge_lines.c f0e951bedf remove bounding boxes from vector topology (Radim's TODO): update Vlib 14 years ago
net.c 8b2e587f4c Vlib: fix node costs for new topology 12 years ago
open.c c70d8f8db5 vlib: improve dox docs of Vect_open_new() 12 years ago
open_nat.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
open_ogr.c 5a06915a63 vlib/pg: don't try to read fidx file for vector maps (PostGIS topology access) 13 years ago
open_pg.c 87e30f072b vlib: fix clean up when creation of new vector map fails (pg) 13 years ago
overlap.c d855a1780a Vlib: update constraints which are now hidden in struct 13 years ago
overlay.c 09b7db1dd9 doxygen errors fixed 12 years ago
pg_local_proto.h 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
poly.c 46cd09da20 Vlib: update for changed fn defs 13 years ago
read.c f702d7ebb4 Vlib partially revert https://trac.osgeo.org/grass/changeset/52776 12 years ago
read_nat.c 963bdb2b5d vlib: *initial* support for native reading PostGIS data (without OGR library) 13 years ago
read_ogr.c 0764296ef8 dox: reducing doxygen warnings 13 years ago
read_pg.c e32f8793bb vlib/pg: fix for polygons with more then 20 rings 13 years ago
read_sfa.c 751ffd5c39 Vlib: minor bugfix 13 years ago
remove_areas.c f702d7ebb4 Vlib partially revert https://trac.osgeo.org/grass/changeset/52776 12 years ago
remove_duplicates.c 1b5c5cea0b fix compilation without gdal/ogr 13 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 fb5b616a45 vlib(pg): follow C indentation rules 13 years ago
rtree_search.c f9b103cf33 Vlib: changed rtree search fn 13 years ago
select.c 76b67f7607 Added methods to modify rectangle boundary coordinates of different dimensions. Modified the names of several functions. Added doxygen style function descriptions. 12 years ago
simple_features.c 40064fc077 vlib: better doxygen documentation for simple_features.c 13 years ago
sindex.c e70a921252 change boxlist_add args 12 years ago
snap.c 76b67f7607 Added methods to modify rectangle boundary coordinates of different dimensions. Modified the names of several functions. Added doxygen style function descriptions. 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 87f20603fa vlib: doxygen cosmetics 13 years ago
write_nat.c 46cd09da20 Vlib: update for changed fn defs 13 years ago
write_ogr.c 87f20603fa vlib: doxygen cosmetics 13 years ago
write_pg.c f00d147981 vlib: postgis topology support (work in progress) 13 years ago
write_sfa.c 87f20603fa vlib: doxygen cosmetics 13 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.