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Geografic-Information-System
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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 gadi atpakaļ
..
Makefile 11e44a917a vlib: Vect_read_colors() added 14 gadi atpakaļ
README 3aa7302eb1 spelling 13 gadi atpakaļ
area.c 46cd09da20 Vlib: update for changed fn defs 13 gadi atpakaļ
array.c 1b5c5cea0b fix compilation without gdal/ogr 13 gadi atpakaļ
ascii.c ab0558ac58 Vlib: init variable 12 gadi atpakaļ
box.c 2306002198 vector libs: optimize bbox search 13 gadi atpakaļ
break_lines.c 3852864fb5 Vlib: speed up Vect_break_lines() 13 gadi atpakaļ
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 gadi atpakaļ
bridges.c 46cd09da20 Vlib: update for changed fn defs 13 gadi atpakaļ
buffer.c 1b5c5cea0b fix compilation without gdal/ogr 13 gadi atpakaļ
buffer2.c f2ec32951d fix some doxygen warnings 12 gadi atpakaļ
build.c 09b7db1dd9 doxygen errors fixed 12 gadi atpakaļ
build_nat.c 09b7db1dd9 doxygen errors fixed 12 gadi atpakaļ
build_ogr.c 55e6a4a3ff vlib(pg): skip features without geometry 13 gadi atpakaļ
build_pg.c f3db19afaf vlib/pg: build isles for PostGIS Topology access 13 gadi atpakaļ
build_sfa.c 9f386c79b7 vlib (pseudo-topo): fix for polygons with more then 20 rings 13 gadi atpakaļ
cats.c 6d875a014e Vlib: optimized category fns 12 gadi atpakaļ
cindex.c 0a381c333d vlib:cindex.c: cosmetics in doxygen strings 14 gadi atpakaļ
clean_nodes.c 19c13ce399 update headers, revert https://trac.osgeo.org/grass/changeset/37860 14 gadi atpakaļ
close.c 22fecc6eef vlib: check GRASS_VECTOR_PGFILE (defined by v.out.postgis) when opening/creating vector map 13 gadi atpakaļ
close_nat.c 19c13ce399 update headers, revert https://trac.osgeo.org/grass/changeset/37860 14 gadi atpakaļ
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 gadi atpakaļ
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 gadi atpakaļ
color_read.c 1b5c5cea0b fix compilation without gdal/ogr 13 gadi atpakaļ
color_remove.c 4e31098139 vlib: store alternative color tables to `vcolr2/mapset/name` 13 gadi atpakaļ
color_write.c 1b5c5cea0b fix compilation without gdal/ogr 13 gadi atpakaļ
constraint.c a658901634 Vlib: dox: updating documentation according to V2_read_next_line_nat etc. where Vect_box_overlap is used 13 gadi atpakaļ
copy.c 9a8ae6a28a Vlib: Vect_copy_map_lines_field(), copy != export 13 gadi atpakaļ
dangles.c 19c13ce399 update headers, revert https://trac.osgeo.org/grass/changeset/37860 14 gadi atpakaļ
dbcolumns.c 1dba9b62d4 dox: fixing several doxygen warnings (wrong file names, typos, lt gt chars) 12 gadi atpakaļ
dgraph.c f3006b1a43 Vlib dgraph.c: use GRASS_EPSILON 13 gadi atpakaļ
dgraph.h b06b8a0105 vectorlib: 16 gadi atpakaļ
e_intersect.c 1b5c5cea0b fix compilation without gdal/ogr 13 gadi atpakaļ
e_intersect.h 11cd111cbd Vlib: Vect_line_buffe2(), Vect_area_buffer2(), Vect_point_buffer2() and 16 gadi atpakaļ
field.c 09b7db1dd9 doxygen errors fixed 12 gadi atpakaļ
find.c 46cd09da20 Vlib: update for changed fn defs 13 gadi atpakaļ
geos.c 09b7db1dd9 doxygen errors fixed 12 gadi atpakaļ
graph.c 19c13ce399 update headers, revert https://trac.osgeo.org/grass/changeset/37860 14 gadi atpakaļ
handler.c 5bcb75e3b6 vlib: free allocated string in error_handler_io() 13 gadi atpakaļ
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 gadi atpakaļ
header_finfo.c 1dba9b62d4 dox: fixing several doxygen warnings (wrong file names, typos, lt gt chars) 12 gadi atpakaļ
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 gadi atpakaļ
init_head.c 1655b43918 vlib(pg): introduce V1_rewrite_line_pg() and V1_rewrite_line_sfa() 13 gadi atpakaļ
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 gadi atpakaļ
legal_vname.c 22e3e2d77b replace GR_FATAL_* (rasters), GV_FATAL_* (vectors) by G_FATAL_* 13 gadi atpakaļ
level.c 1ae866496c vlib: unify \file doxygen instruction (cosmetics) 14 gadi atpakaļ
level_two.c 09b7db1dd9 doxygen errors fixed 12 gadi atpakaļ
line.c 09b7db1dd9 doxygen errors fixed 12 gadi atpakaļ
list.c e70a921252 change boxlist_add args 12 gadi atpakaļ
map.c f702d7ebb4 Vlib partially revert https://trac.osgeo.org/grass/changeset/52776 12 gadi atpakaļ
merge_lines.c f0e951bedf remove bounding boxes from vector topology (Radim's TODO): update Vlib 14 gadi atpakaļ
net.c 8b2e587f4c Vlib: fix node costs for new topology 12 gadi atpakaļ
open.c c70d8f8db5 vlib: improve dox docs of Vect_open_new() 12 gadi atpakaļ
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 gadi atpakaļ
open_ogr.c 5a06915a63 vlib/pg: don't try to read fidx file for vector maps (PostGIS topology access) 13 gadi atpakaļ
open_pg.c 87e30f072b vlib: fix clean up when creation of new vector map fails (pg) 13 gadi atpakaļ
overlap.c d855a1780a Vlib: update constraints which are now hidden in struct 13 gadi atpakaļ
overlay.c 09b7db1dd9 doxygen errors fixed 12 gadi atpakaļ
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 gadi atpakaļ
poly.c 46cd09da20 Vlib: update for changed fn defs 13 gadi atpakaļ
read.c f702d7ebb4 Vlib partially revert https://trac.osgeo.org/grass/changeset/52776 12 gadi atpakaļ
read_nat.c 963bdb2b5d vlib: *initial* support for native reading PostGIS data (without OGR library) 13 gadi atpakaļ
read_ogr.c 0764296ef8 dox: reducing doxygen warnings 13 gadi atpakaļ
read_pg.c e32f8793bb vlib/pg: fix for polygons with more then 20 rings 13 gadi atpakaļ
read_sfa.c 751ffd5c39 Vlib: minor bugfix 13 gadi atpakaļ
remove_areas.c f702d7ebb4 Vlib partially revert https://trac.osgeo.org/grass/changeset/52776 12 gadi atpakaļ
remove_duplicates.c 1b5c5cea0b fix compilation without gdal/ogr 13 gadi atpakaļ
rewind.c 7c8d5a94b1 vlib: first steps for full PostGIS topology support 13 gadi atpakaļ
rewind_nat.c 963bdb2b5d vlib: *initial* support for native reading PostGIS data (without OGR library) 13 gadi atpakaļ
rewind_ogr.c 963bdb2b5d vlib: *initial* support for native reading PostGIS data (without OGR library) 13 gadi atpakaļ
rewind_pg.c fb5b616a45 vlib(pg): follow C indentation rules 13 gadi atpakaļ
rtree_search.c f9b103cf33 Vlib: changed rtree search fn 13 gadi atpakaļ
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 gadi atpakaļ
simple_features.c 40064fc077 vlib: better doxygen documentation for simple_features.c 13 gadi atpakaļ
sindex.c e70a921252 change boxlist_add args 12 gadi atpakaļ
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 gadi atpakaļ
tin.c 1ae866496c vlib: unify \file doxygen instruction (cosmetics) 14 gadi atpakaļ
type.c 19c13ce399 update headers, revert https://trac.osgeo.org/grass/changeset/37860 14 gadi atpakaļ
window.c 1ae866496c vlib: unify \file doxygen instruction (cosmetics) 14 gadi atpakaļ
write.c 87f20603fa vlib: doxygen cosmetics 13 gadi atpakaļ
write_nat.c 46cd09da20 Vlib: update for changed fn defs 13 gadi atpakaļ
write_ogr.c 87f20603fa vlib: doxygen cosmetics 13 gadi atpakaļ
write_pg.c f00d147981 vlib: postgis topology support (work in progress) 13 gadi atpakaļ
write_sfa.c 87f20603fa vlib: doxygen cosmetics 13 gadi atpakaļ

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.