Markus Metz
d463f2470f
bugfix for Vect_attach_centroids, ticket https://trac.osgeo.org/grass/ticket/397
|
16 年之前 | |
|---|---|---|
| .. | ||
| Makefile | 16 年之前 | |
| README | 17 年之前 | |
| area.c | 16 年之前 | |
| array.c | 16 年之前 | |
| box.c | 17 年之前 | |
| break_lines.c | 16 年之前 | |
| break_polygons.c | 16 年之前 | |
| bridges.c | 16 年之前 | |
| buffer.c | 16 年之前 | |
| buffer2.c | 16 年之前 | |
| build.c | 16 年之前 | |
| build_nat.c | 16 年之前 | |
| build_ogr.c | 16 年之前 | |
| cats.c | 16 年之前 | |
| cindex.c | 17 年之前 | |
| clean_nodes.c | 16 年之前 | |
| close.c | 17 年之前 | |
| close_nat.c | 17 年之前 | |
| close_ogr.c | 17 年之前 | |
| constraint.c | 17 年之前 | |
| dangles.c | 16 年之前 | |
| dbcolumns.c | 17 年之前 | |
| dgraph.c | 16 年之前 | |
| dgraph.h | 16 年之前 | |
| e_intersect.c | 16 年之前 | |
| e_intersect.h | 16 年之前 | |
| error.c | 17 年之前 | |
| field.c | 17 年之前 | |
| find.c | 17 年之前 | |
| graph.c | 17 年之前 | |
| header.c | 17 年之前 | |
| hist.c | 17 年之前 | |
| init_head.c | 17 年之前 | |
| intersect.c | 16 年之前 | |
| legal_vname.c | 17 年之前 | |
| level.c | 17 年之前 | |
| level_two.c | 17 年之前 | |
| line.c | 17 年之前 | |
| list.c | 17 年之前 | |
| map.c | 16 年之前 | |
| net.c | 16 年之前 | |
| open.c | 16 年之前 | |
| open_nat.c | 17 年之前 | |
| open_ogr.c | 17 年之前 | |
| overlap.c | 17 年之前 | |
| overlay.c | 17 年之前 | |
| poly.c | 17 年之前 | |
| read.c | 16 年之前 | |
| read_nat.c | 17 年之前 | |
| read_ogr.c | 17 年之前 | |
| remove_areas.c | 16 年之前 | |
| remove_duplicates.c | 16 年之前 | |
| rewind.c | 17 年之前 | |
| rewind_nat.c | 17 年之前 | |
| rewind_ogr.c | 17 年之前 | |
| select.c | 16 年之前 | |
| sindex.c | 16 年之前 | |
| snap.c | 16 年之前 | |
| tin.c | 17 年之前 | |
| type.c | 17 年之前 | |
| window.c | 17 年之前 | |
| write.c | 16 年之前 | |
| write_nat.c | 16 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().
Se 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 mus call full build, i.e. Vect_build(), at the end.
All features without category are written to category index of field 0.
In category index is stored also type of feture, that make s possible to find areas
without centroid throug category index.
---------
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().
Se 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 mus call full build, i.e. Vect_build(), at the end.
All features without category are written to category index of field 0.
In category index is stored also type of feture, that make s possible to find areas
without centroid throug category index.