[geos-devel] [GEOS] #1097: Dropped holes when buffer(0) -ing a valid geometry

[GEOS]

#1097: Dropped holes when buffer(0) -ing a valid geometry
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 Reporter:  astronomiser  |      Owner:  geos-devel@…
     Type:  defect        |     Status:  new
 Priority:  minor         |  Milestone:
Component:  Default       |    Version:  3.8.1
 Severity:  Unassigned    |   Keywords:  buffer
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 Passing along this bug report from
 [https://github.com/Toblerity/Shapely/issues/1069 the Shapely github].

 [https://github.com/Toblerity/Shapely/files/5845907/shape.txt The WKT in a
 text file]

 Running buffer(0) leaves the geometry mostly unchanged but there is a
 group of holes which are removed in the lower right of the geometry.

 I was able to replicate this behavior in PostGIS (w/ GEOS 3.5). The user
 is using Shapely with GEOS 3.8.1. Buffering the geometry in JTS did not
 produce the same effect.

-- 
Ticket URL: <https://trac.osgeo.org/geos/ticket/1097>
GEOS <http://trac.osgeo.org/geos>
GEOS (Geometry Engine - Open Source) is a C++ port of the Java Topology Suite (JTS).