RONCC/Geografic-Information-System @ 2df23ae65635bee3cc94b81de24a9c7894e17254

Vaclav Petras b701f4de47 vlib: dox		12 年之前
..
Makefile	11e44a917a vlib: Vect_read_colors() added	14 年之前
README	3aa7302eb1 spelling	13 年之前
area.c	46cd09da20 Vlib: update for changed fn defs	13 年之前
array.c	1b5c5cea0b fix compilation without gdal/ogr	13 年之前
ascii.c	c756102fbf Vlib: speed up v.out.ascii for multiple column export	13 年之前
box.c	2306002198 vector libs: optimize bbox search	13 年之前
break_lines.c	3852864fb5 Vlib: speed up Vect_break_lines()	13 年之前
break_polygons.c	4d689f12f2 Vlib: static where possible	13 年之前
bridges.c	46cd09da20 Vlib: update for changed fn defs	13 年之前
buffer.c	1b5c5cea0b fix compilation without gdal/ogr	13 年之前
buffer2.c	bcd7de2528 vector lib update for v.buffer (backport from devbr)	14 年之前
build.c	95764a1ee9 Vlib: faster Vect_isle_find_area()	13 年之前
build_nat.c	6bddbcf2f0 vlib: improve PostGIS topology support	13 年之前
build_ogr.c	55e6a4a3ff vlib(pg): skip features without geometry	13 年之前
build_pg.c	f3db19afaf vlib/pg: build isles for PostGIS Topology access	13 年之前
build_sfa.c	9f386c79b7 vlib (pseudo-topo): fix for polygons with more then 20 rings	13 年之前
cats.c	b701f4de47 vlib: dox	12 年之前
cindex.c	0a381c333d vlib:cindex.c: cosmetics in doxygen strings	13 年之前
clean_nodes.c	19c13ce399 update headers, revert https://trac.osgeo.org/grass/changeset/37860	14 年之前
close.c	22fecc6eef vlib: check GRASS_VECTOR_PGFILE (defined by v.out.postgis) when opening/creating vector map	12 年之前
close_nat.c	19c13ce399 update headers, revert https://trac.osgeo.org/grass/changeset/37860	14 年之前
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 年之前
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 年之前
color_read.c	1b5c5cea0b fix compilation without gdal/ogr	13 年之前
color_remove.c	4e31098139 vlib: store alternative color tables to `vcolr2/mapset/name`	13 年之前
color_write.c	1b5c5cea0b fix compilation without gdal/ogr	13 年之前
constraint.c	a658901634 Vlib: dox: updating documentation according to V2_read_next_line_nat etc. where Vect_box_overlap is used	13 年之前
dangles.c	19c13ce399 update headers, revert https://trac.osgeo.org/grass/changeset/37860	14 年之前
dbcolumns.c	19c13ce399 update headers, revert https://trac.osgeo.org/grass/changeset/37860	14 年之前
dgraph.c	f3006b1a43 Vlib dgraph.c: use GRASS_EPSILON	13 年之前
dgraph.h	b06b8a0105 vectorlib:	16 年之前
e_intersect.c	1b5c5cea0b fix compilation without gdal/ogr	13 年之前
e_intersect.h	11cd111cbd Vlib: Vect_line_buffe2(), Vect_area_buffer2(), Vect_point_buffer2() and	16 年之前
field.c	aa07934f02 vlib(pg): report full table name (`schema.table`) for tables from non-public schema	13 年之前
find.c	46cd09da20 Vlib: update for changed fn defs	13 年之前
geos.c	8e11a4e54f add mising headers (compiling without gdal/ogr)	14 年之前
graph.c	19c13ce399 update headers, revert https://trac.osgeo.org/grass/changeset/37860	14 年之前
handler.c	5bcb75e3b6 vlib: free allocated string in error_handler_io()	13 年之前
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 年之前
header_finfo.c	b65735bc2a vlib: remove Vect_get_finfo_geometry_column()	13 年之前
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 年之前
init_head.c	1655b43918 vlib(pg): introduce V1_rewrite_line_pg() and V1_rewrite_line_sfa()	13 年之前
intersect.c	f9b103cf33 Vlib: changed rtree search fn	13 年之前
legal_vname.c	22e3e2d77b replace GR_FATAL_* (rasters), GV_FATAL_* (vectors) by G_FATAL_*	13 年之前
level.c	1ae866496c vlib: unify \file doxygen instruction (cosmetics)	14 年之前
level_two.c	65f72a5848 vlib: allow to optionally maintain list of updated lines/nodes	13 年之前
line.c	c69464e8a2 Vlib: dox: note about freeing	13 年之前
list.c	56130a84b8 fix typo	14 年之前
map.c	1655b43918 vlib(pg): introduce V1_rewrite_line_pg() and V1_rewrite_line_sfa()	13 年之前
merge_lines.c	f0e951bedf remove bounding boxes from vector topology (Radim's TODO): update Vlib	14 年之前
net.c	1b5c5cea0b fix compilation without gdal/ogr	13 年之前
open.c	22fecc6eef vlib: check GRASS_VECTOR_PGFILE (defined by v.out.postgis) when opening/creating vector map	12 年之前
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 年之前
open_ogr.c	5a06915a63 vlib/pg: don't try to read fidx file for vector maps (PostGIS topology access)	13 年之前
open_pg.c	87e30f072b vlib: fix clean up when creation of new vector map fails (pg)	13 年之前
overlap.c	d855a1780a Vlib: update constraints which are now hidden in struct	13 年之前
overlay.c	19c13ce399 update headers, revert https://trac.osgeo.org/grass/changeset/37860	14 年之前
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 年之前
poly.c	46cd09da20 Vlib: update for changed fn defs	13 年之前
read.c	694db7ff41 partly revert https://trac.osgeo.org/grass/changeset/51975 - keep two level (level 3 is reserved for 3D topology)	13 年之前
read_nat.c	963bdb2b5d vlib: initial support for native reading PostGIS data (without OGR library)	13 年之前
read_ogr.c	a061ff0f0a vlib(pg): improve reading PostGIS features	13 年之前
read_pg.c	e32f8793bb vlib/pg: fix for polygons with more then 20 rings	13 年之前
read_sfa.c	751ffd5c39 Vlib: minor bugfix	13 年之前
remove_areas.c	19c13ce399 update headers, revert https://trac.osgeo.org/grass/changeset/37860	14 年之前
remove_duplicates.c	1b5c5cea0b fix compilation without gdal/ogr	13 年之前
rewind.c	7c8d5a94b1 vlib: first steps for full PostGIS topology support	13 年之前
rewind_nat.c	963bdb2b5d vlib: initial support for native reading PostGIS data (without OGR library)	13 年之前
rewind_ogr.c	963bdb2b5d vlib: initial support for native reading PostGIS data (without OGR library)	13 年之前
rewind_pg.c	fb5b616a45 vlib(pg): follow C indentation rules	13 年之前
rtree_search.c	f9b103cf33 Vlib: changed rtree search fn	13 年之前
select.c	f9b103cf33 Vlib: changed rtree search fn	13 年之前
simple_features.c	40064fc077 vlib: better doxygen documentation for simple_features.c	13 年之前
sindex.c	8397d5e329 Moved ilist from vector lib into libgis	13 年之前
snap.c	4d689f12f2 Vlib: static where possible	13 年之前
tin.c	1ae866496c vlib: unify \file doxygen instruction (cosmetics)	14 年之前
type.c	19c13ce399 update headers, revert https://trac.osgeo.org/grass/changeset/37860	14 年之前
window.c	1ae866496c vlib: unify \file doxygen instruction (cosmetics)	14 年之前
write.c	87f20603fa vlib: doxygen cosmetics	13 年之前
write_nat.c	46cd09da20 Vlib: update for changed fn defs	13 年之前
write_ogr.c	87f20603fa vlib: doxygen cosmetics	13 年之前
write_pg.c	f00d147981 vlib: postgis topology support (work in progress)	13 年之前
write_sfa.c	87f20603fa vlib: doxygen cosmetics	13 年之前

		
				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.