Results (11 - 20 of 98)
- union-fail-small.wkb (Ticket #1034)
- ... nes from synthetic data which causes a failure during unary union (in JTS)
- By Jul 2, 2020, 10:11:41 PM —
- #1034: defect: Union topology exceptions lead to complete loss of floating point precision (closed: fixed)
- ... bug from the PostGIS project, which is calling GEOS for the union function. Certain complex geometries can cause topology exceptions, triggering routines to try to simplify the geometries. This process cascades until all decimal precision is lost. https://trac.osgeo.org/postgis/ticket/4711 In ...
- By Jul 1, 2020, 9:35:55 AM —
- #1031: defect: Union of two Polygons results in GeometryCollection (closed: invalid)
- ... :unique_ptr<geos::geom::Geometry> gc = ga->Union(gb.get()); assert(gc->isValid()); geos::geom::GeometryTypeId type = gc->getGeometryTypeId(); std::cout << type << std::endl; assert(type == geos::geom::GEOS_POLYGON); } }}} Expected: result geometry is a Pol ...
- By May 28, 2020, 10:59:08 AM —
- #997: defect: ST_Union performance degradation from GEOS 3.6.x -> 3.7.x (closed: wontfix)
- ... 7.0 when calling `ST_Union(ST_Buffer(...))` on some large polygons (EPSG:3857) with lots of vertices. I've been testing primarily on PostgreSQL 9.5 but have reproduced the issue with multiple versions of PostGIS (2.2 to 2.5). This appears to be a separate i ...
- By Oct 10, 2019, 8:16:45 AM —
- #996: defect: Windows CMake Mingw64 32-bit gcc 8.1.0 (closed: fixed)
- ... 11 sec Start 27: unit-capi-GEOSCoverageUnion 27/258 Test #27: unit-capi-GEOSCoverageUnion .............................. Passed 0.08 sec Start 28: unit-capi-GEOSDelaunayTriangulation 28/258 Test #28: unit-capi-GEOSDelaunayTriangulation ...................... ...
- By Oct 8, 2019, 1:11:03 PM —
- #994: defect: Segfault in UnaryUnionOp (::buildGeometry, something with C++ strings!) (closed: fixed)
- ... h:391 #3 0x00007f52990da583 in geos::operation::geounion::UnaryUnionOp::Union() (this=0x7ffde4bb7940) at UnaryUnionOp.cpp:85 }}}
- By Oct 7, 2019, 1:55:24 AM —
- #982: defect: Postgis ST_ConcaveHull Runtime GEOS Problem? (closed: worksforme)
- A concave hull query with the attached data set under Postgresql 9.4 / PostGIS 2.2 / Geos 3.5.0 runs in under a second. The same query using the same data on Postgresql 9.6 / PostGIS 2.5.2 / GEOS 3.7.1 is still running after 30 minutes. ...
- By Aug 2, 2019, 12:35:45 PM —
- #980: defect: GEOSBuffer emits invalid buffering a collection (closed: fixed)
- Follow-up on #978. I replaced Unary Union by Buffer(0), given that all my inputs are polygons. I believe on mailing lists Martin mentioned Overlays-NG are going to be similar to it, so may be worth checking it. PostGIS query for reference: {{{ 09:42:59 [gis] > select w_ ...
- By Jul 17, 2019, 11:46:35 PM —
- #979: defect: Topology exception in UnaryUnion (closed: fixed)
- Attached test case fails on master but passed in JTS.
- By Jul 17, 2019, 10:35:49 AM —
- #978: defect: UnaryUnion topology exception (closed: invalid)
- ... 30:50 [gis] > select ST_Difference(p_geom, ST_UnaryUnion(w_geom)) from tmp_osm_population_raw_nowater where p_geom && '(539614.84560837818,6759705.8015133878)'::point::geometry::box2d and ctid='(32000,1)' ; ERROR: XX000: lwgeom_unaryunion: GEOS Error: TopologyException: no outgoing dirEd ...
- By Jul 17, 2019, 9:35:11 AM —
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