[PostGIS] #6136: ST_MakeValid merges polygons in a MultiPolygon.
PostGIS
trac at osgeo.org
Tue Sep 29 12:42:36 PDT 2026
#6136: ST_MakeValid merges polygons in a MultiPolygon.
--------------------------------+---------------------------
Reporter: Lars Aksel Opsahl | Owner: pramsey
Type: defect | Status: new
Priority: medium | Milestone: PostGIS 3.6.5
Component: postgis | Version: 3.6.x
Resolution: | Keywords:
--------------------------------+---------------------------
Comment (by Lars Aksel Opsahl):
In the input polygon there is one this
{{{
NOTICE: 00000: Self-intersection at or near point 8.6679318543637205
59.6015148042639
}}}
The intersection is very small and is not visible under normal conditions.
However, this causes all polygons to be merged into a single polygon that
are connected, even those that are not related to the point
8.6679318543637205 59.6015148042639 ,
With the parameters below, the problem remains the same.
'method=structure keepcollapsed=false' and 'method=structure
keepcollapsed=true'
--
Ticket URL: <https://trac.osgeo.org/postgis/ticket/6136#comment:1>
PostGIS <http://trac.osgeo.org/postgis/>
The PostGIS Trac is used for bug, enhancement & task tracking, a user and developer wiki, and a view into the subversion code repository of PostGIS project.
More information about the postgis-tickets
mailing list