[PostGIS] #6129: Missing area with topology.ST_GetFaceGeometry('arstat_2026_overlay_02_348',101383), but alle edges seems to be prensent
PostGIS
trac at osgeo.org
Sat Sep 12 01:19:52 PDT 2026
#6129: Missing area with
topology.ST_GetFaceGeometry('arstat_2026_overlay_02_348',101383), but alle
edges seems to be prensent
--------------------------------+---------------------------
Reporter: Lars Aksel Opsahl | Owner: strk
Type: defect | Status: new
Priority: medium | Milestone: PostGIS 3.6.5
Component: topology | Version: 3.6.x
Resolution: | Keywords:
--------------------------------+---------------------------
Comment (by Lars Aksel Opsahl):
Replying to [comment:3 strk]:
> I've imported all the edges from your sql into a new topology, and
verified I got no drift (I had to order by edge_id descending or I was
getting an additional snap otherwise, despite tolerance=0). This is how I
did it:
> {{{
> select createtopology('t6129', 4258);
> select topogeo_addlinestring('t6129', geom, 0) from edges_face_101383
order by edge_id desc;
> }}}
>
> This is how I verified all edges in the resulting topology had an equal
edge in the source set:
> {{{
> select e.edge_id from t6129.edge e where not exists ( select * from
edges_face_101383 o where o.geom = e.geom ); -- 0 rows returned, OK
> select e.edge_id from t6129.edge e where not exists ( select * from
t6129.edge o where o.geom = e.geom ); -- o rows returned, OK
> }}}
>
> The resulting topology is reported to be valid (no rows from `SELECT
ValidateTopology`)
> I'm attaching the pgtopo_export of it.
It seem like problem is related from going from zero tolerance to 1e-07
--
Ticket URL: <https://trac.osgeo.org/postgis/ticket/6129#comment:5>
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